Make maximising work properly again in Potlatch

[rails.git] / test / functional / changeset_controller_test.rb

diff --git a/test/functional/changeset_controller_test.rb b/test/functional/changeset_controller_test.rb
index 150e53dae946aa511f077231accbebcb35e8963a..9ed9f295954ba3dc90382c4011933559c315f697 100644 (file)
--- a/test/functional/changeset_controller_test.rb
+++ b/test/functional/changeset_controller_test.rb
@@ -4,21 +4,94 @@ require 'changeset_controller'
 class ChangesetControllerTest < ActionController::TestCase
   api_fixtures
 
 class ChangesetControllerTest < ActionController::TestCase
   api_fixtures
 

-  def basic_authorization(user, pass)
-    @request.env["HTTP_AUTHORIZATION"] = "Basic %s" % Base64.encode64("#{user}:#{pass}")
+  ##
+  # test all routes which lead to this controller
+  def test_routes
+    assert_routing(
+      { :path => "/api/0.6/changeset/create", :method => :put },
+      { :controller => "changeset", :action => "create" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1/upload", :method => :post },
+      { :controller => "changeset", :action => "upload", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1/download", :method => :get },
+      { :controller => "changeset", :action => "download", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1/expand_bbox", :method => :post },
+      { :controller => "changeset", :action => "expand_bbox", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1", :method => :get },
+      { :controller => "changeset", :action => "read", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1", :method => :put },
+      { :controller => "changeset", :action => "update", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changeset/1/close", :method => :put },
+      { :controller => "changeset", :action => "close", :id => "1" }
+    )
+    assert_routing(
+      { :path => "/api/0.6/changesets", :method => :get },
+      { :controller => "changeset", :action => "query" }
+    )
+    assert_routing(
+      { :path => "/user/name/edits", :method => :get },
+      { :controller => "changeset", :action => "list", :display_name => "name" }
+    )
+    assert_routing(
+      { :path => "/user/name/edits/feed", :method => :get },
+      { :controller => "changeset", :action => "feed", :display_name => "name", :format => :atom }
+    )
+    assert_routing(
+      { :path => "/browse/friends", :method => :get },
+      { :controller => "changeset", :action => "list", :friends => true }
+    )
+    assert_routing(
+      { :path => "/browse/nearby", :method => :get },
+      { :controller => "changeset", :action => "list", :nearby => true }
+    )
+    assert_routing(
+      { :path => "/browse/changesets", :method => :get },
+      { :controller => "changeset", :action => "list" }
+    )
+    assert_routing(
+      { :path => "/browse/changesets/feed", :method => :get },
+      { :controller => "changeset", :action => "feed", :format => :atom }
+    )
+    assert_recognizes(
+      { :controller => "changeset", :action => "list" },
+      { :path => "/browse", :method => :get }
+    )
+    assert_recognizes(
+      { :controller => "changeset", :action => "list" },
+      { :path => "/history", :method => :get }
+    )
+    assert_recognizes(
+      { :controller => "changeset", :action => "feed", :format => :atom },
+      { :path => "/history/feed", :method => :get }
+    )

   end
 
   end
 

-  def content(c)
-    @request.env["RAW_POST_DATA"] = c.to_s
-  end
-  

   # -----------------------
   # Test simple changeset creation
   # -----------------------
   
   def test_create
   # -----------------------
   # Test simple changeset creation
   # -----------------------
   
   def test_create

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:normal_user).email, "test"
+    # Create the first user's changeset
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_require_public_data
+    

     
     

+    basic_authorization users(:public_user).email, "test"

     # Create the first user's changeset
     content "<osm><changeset>" +
       "<tag k='created_by' v='osm test suite checking changesets'/>" + 
     # Create the first user's changeset
     content "<osm><changeset>" +
       "<tag k='created_by' v='osm test suite checking changesets'/>" + 


@@ -26,16 +99,63 @@ class ChangesetControllerTest < ActionController::TestCase
     put :create
     
     assert_response :success, "Creation of changeset did not return sucess status"
     put :create
     
     assert_response :success, "Creation of changeset did not return sucess status"

-    newid = @response.body
+    newid = @response.body.to_i
+
+    # check end time, should be an hour ahead of creation time
+    cs = Changeset.find(newid)
+    duration = cs.closed_at - cs.created_at
+    # the difference can either be a rational, or a floating point number
+    # of seconds, depending on the code path taken :-(
+    if duration.class == Rational
+      assert_equal Rational(1,24), duration , "initial idle timeout should be an hour (#{cs.created_at} -> #{cs.closed_at})"
+    else
+      # must be number of seconds...
+      assert_equal 3600, duration.round, "initial idle timeout should be an hour (#{cs.created_at} -> #{cs.closed_at})"
+    end

   end
   
   def test_create_invalid
   end
   
   def test_create_invalid

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:normal_user).email, "test"
+    content "<osm><changeset></osm>"
+    put :create
+    assert_require_public_data
+
+    ## Try the public user
+    basic_authorization users(:public_user).email, "test"

     content "<osm><changeset></osm>"
     put :create
     assert_response :bad_request, "creating a invalid changeset should fail"
   end
 
     content "<osm><changeset></osm>"
     put :create
     assert_response :bad_request, "creating a invalid changeset should fail"
   end
 

+  def test_create_invalid_no_content
+    ## First check with no auth
+    put :create
+    assert_response :unauthorized, "shouldn't be able to create a changeset with no auth"
+    
+    ## Now try to with the non-public user
+    basic_authorization users(:normal_user).email, "test"
+    put :create
+    assert_require_public_data
+    
+    ## Try the inactive user
+    basic_authorization users(:inactive_user).email, "test"
+    put :create
+    assert_inactive_user
+    
+    ## Now try to use the public user
+    basic_authorization users(:public_user).email, "test"
+    put :create
+    assert_response :bad_request, "creating a changeset with no content should fail"
+  end
+  
+  def test_create_wrong_method
+    basic_authorization users(:public_user).email, "test"
+    get :create
+    assert_response :method_not_allowed
+    post :create
+    assert_response :method_not_allowed
+  end
+

   ##
   # check that the changeset can be read and returns the correct
   # document structure.
   ##
   # check that the changeset can be read and returns the correct
   # document structure.


@@ -48,28 +168,180 @@ class ChangesetControllerTest < ActionController::TestCase
     assert_select "osm>changeset[id=#{changeset_id}]", 1
   end
   
     assert_select "osm>changeset[id=#{changeset_id}]", 1
   end
   

+  ##
+  # check that a changeset that doesn't exist returns an appropriate message
+  def test_read_not_found
+    [0, -32, 233455644, "afg", "213"].each do |id|
+      begin
+        get :read, :id => id
+        assert_response :not_found, "should get a not found"
+      rescue ActionController::RoutingError => ex
+        assert_match /No route matches/, ex.to_s
+      end
+    end
+  end
+  
+  ##
+  # test that the user who opened a change can close it

   def test_close
   def test_close

-    # FIXME FIXME FIXME!
+    ## Try without authentication
+    put :close, :id => changesets(:public_user_first_change).id
+    assert_response :unauthorized
+    
+    
+    ## Try using the non-public user
+    basic_authorization users(:normal_user).email, "test"
+    put :close, :id => changesets(:normal_user_first_change).id
+    assert_require_public_data
+    
+    
+    ## The try with the public user
+    basic_authorization users(:public_user).email, "test"
+
+    cs_id = changesets(:public_user_first_change).id
+    put :close, :id => cs_id
+    assert_response :success
+
+    # test that it really is closed now
+    cs = Changeset.find(cs_id)
+    assert(!cs.is_open?, 
+           "changeset should be closed now (#{cs.closed_at} > #{Time.now.getutc}.")
+  end
+
+  ##
+  # test that a different user can't close another user's changeset
+  def test_close_invalid
+    basic_authorization users(:public_user).email, "test"
+
+    put :close, :id => changesets(:normal_user_first_change).id
+    assert_response :conflict
+    assert_equal "The user doesn't own that changeset", @response.body
+  end
+  
+  ##
+  # test that you can't close using another method
+  def test_close_method_invalid
+    basic_authorization users(:public_user).email, "test"
+    
+    cs_id = changesets(:public_user_first_change).id
+    get :close, :id => cs_id
+    assert_response :method_not_allowed
+    
+    post :close, :id => cs_id
+    assert_response :method_not_allowed
+  end
+  
+  ##
+  # check that you can't close a changeset that isn't found
+  def test_close_not_found
+    cs_ids = [0, -132, "123"]
+    
+    # First try to do it with no auth
+    cs_ids.each do |id|
+      begin
+        put :close, :id => id
+        assert_response :unauthorized, "Shouldn't be able close the non-existant changeset #{id}, when not authorized"
+      rescue ActionController::RoutingError => ex
+        assert_match /No route matches/, ex.to_s
+      end
+    end
+    
+    # Now try with auth
+    basic_authorization users(:public_user).email, "test"
+    cs_ids.each do |id|
+      begin
+        put :close, :id => id
+        assert_response :not_found, "The changeset #{id} doesn't exist, so can't be closed"
+      rescue ActionController::RoutingError => ex
+        assert_match /No route matches/, ex.to_s
+      end
+    end

   end
 
   ##
   # upload something simple, but valid and check that it can 
   end
 
   ##
   # upload something simple, but valid and check that it can 

-  # be read back ok.
+  # be read back ok
+  # Also try without auth and another user.

   def test_upload_simple_valid
   def test_upload_simple_valid

-    basic_authorization "test@openstreetmap.org", "test"
+    ## Try with no auth
+    changeset_id = changesets(:public_user_first_change).id
+
+    # simple diff to change a node, way and relation by removing 
+    # their tags
+    diff = <<EOF
+<osmChange>
+ <modify>
+  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+  <way id='1' changeset='#{changeset_id}' version='1'>
+   <nd ref='3'/>
+  </way>
+ </modify>
+ <modify>
+  <relation id='1' changeset='#{changeset_id}' version='1'>
+   <member type='way' role='some' ref='3'/>
+   <member type='node' role='some' ref='5'/>
+   <member type='relation' role='some' ref='3'/>
+  </relation>
+ </modify>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :unauthorized, 
+      "shouldnn't be able to upload a simple valid diff to changeset: #{@response.body}"
+      
+      
+    
+    ## Now try with a private user
+    basic_authorization users(:normal_user).email, "test"
+    changeset_id = changesets(:normal_user_first_change).id
+
+    # simple diff to change a node, way and relation by removing 
+    # their tags
+    diff = <<EOF
+<osmChange>
+ <modify>
+  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+  <way id='1' changeset='#{changeset_id}' version='1'>
+   <nd ref='3'/>
+  </way>
+ </modify>
+ <modify>
+  <relation id='1' changeset='#{changeset_id}' version='1'>
+   <member type='way' role='some' ref='3'/>
+   <member type='node' role='some' ref='5'/>
+   <member type='relation' role='some' ref='3'/>
+  </relation>
+ </modify>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :forbidden, 
+      "can't upload a simple valid diff to changeset: #{@response.body}"    
+    
+      
+      
+    ## Now try with the public user
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id

 
     # simple diff to change a node, way and relation by removing 
     # their tags
     diff = <<EOF
 <osmChange>
  <modify>
 
     # simple diff to change a node, way and relation by removing 
     # their tags
     diff = <<EOF
 <osmChange>
  <modify>

-  <node id='1' lon='0' lat='0' changeset='1' version='1'/>
-  <way id='1' changeset='1' version='1'>
+  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+  <way id='1' changeset='#{changeset_id}' version='1'>

    <nd ref='3'/>
   </way>
  </modify>
  <modify>
    <nd ref='3'/>
   </way>
  </modify>
  <modify>

-  <relation id='1' changeset='1' version='1'>
+  <relation id='1' changeset='#{changeset_id}' version='1'>

    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>
    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>


@@ -80,7 +352,7 @@ EOF
 
     # upload it
     content diff
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => changeset_id

     assert_response :success, 
       "can't upload a simple valid diff to changeset: #{@response.body}"
 
     assert_response :success, 
       "can't upload a simple valid diff to changeset: #{@response.body}"
 


@@ -93,22 +365,23 @@ EOF
   ##
   # upload something which creates new objects using placeholders
   def test_upload_create_valid
   ##
   # upload something which creates new objects using placeholders
   def test_upload_create_valid

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <create>
 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <create>

-  <node id='-1' lon='0' lat='0' changeset='1'>
+  <node id='-1' lon='0' lat='0' changeset='#{cs_id}'>

    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>
    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>

-  <way id='-1' changeset='1'>
+  <way id='-1' changeset='#{cs_id}'>

    <nd ref='3'/>
   </way>
  </create>
  <create>
    <nd ref='3'/>
   </way>
  </create>
  <create>

-  <relation id='-1' changeset='1'>
+  <relation id='-1' changeset='#{cs_id}'>

    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>
    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>


@@ -119,31 +392,31 @@ EOF
 
     # upload it
     content diff
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :success, 
       "can't upload a simple valid creation to changeset: #{@response.body}"
 
     # check the returned payload
     assert_response :success, 
       "can't upload a simple valid creation to changeset: #{@response.body}"
 
     # check the returned payload

-    assert_select "osm[version=#{API_VERSION}][generator=\"OpenStreetMap server\"]", 1
-    assert_select "osm>node", 1
-    assert_select "osm>way", 1
-    assert_select "osm>relation", 1
+    assert_select "diffResult[version=#{API_VERSION}][generator=\"OpenStreetMap server\"]", 1
+    assert_select "diffResult>node", 1
+    assert_select "diffresult>way", 1
+    assert_select "diffResult>relation", 1

 
     # inspect the response to find out what the new element IDs are
     doc = XML::Parser.string(@response.body).parse
 
     # inspect the response to find out what the new element IDs are
     doc = XML::Parser.string(@response.body).parse

-    new_node_id = doc.find("//osm/node").first["new_id"].to_i
-    new_way_id = doc.find("//osm/way").first["new_id"].to_i
-    new_rel_id = doc.find("//osm/relation").first["new_id"].to_i
+    new_node_id = doc.find("//diffResult/node").first["new_id"].to_i
+    new_way_id = doc.find("//diffResult/way").first["new_id"].to_i
+    new_rel_id = doc.find("//diffResult/relation").first["new_id"].to_i

 
     # check the old IDs are all present and negative one
 
     # check the old IDs are all present and negative one

-    assert_equal -1, doc.find("//osm/node").first["old_id"].to_i
-    assert_equal -1, doc.find("//osm/way").first["old_id"].to_i
-    assert_equal -1, doc.find("//osm/relation").first["old_id"].to_i
+    assert_equal -1, doc.find("//diffResult/node").first["old_id"].to_i
+    assert_equal -1, doc.find("//diffResult/way").first["old_id"].to_i
+    assert_equal -1, doc.find("//diffResult/relation").first["old_id"].to_i

 
     # check the versions are present and equal one
 
     # check the versions are present and equal one

-    assert_equal 1, doc.find("//osm/node").first["new_version"].to_i
-    assert_equal 1, doc.find("//osm/way").first["new_version"].to_i
-    assert_equal 1, doc.find("//osm/relation").first["new_version"].to_i
+    assert_equal 1, doc.find("//diffResult/node").first["new_version"].to_i
+    assert_equal 1, doc.find("//diffResult/way").first["new_version"].to_i
+    assert_equal 1, doc.find("//diffResult/relation").first["new_version"].to_i

 
     # check that the changes made it into the database
     assert_equal 2, Node.find(new_node_id).tags.size, "new node should have two tags"
 
     # check that the changes made it into the database
     assert_equal 2, Node.find(new_node_id).tags.size, "new node should have two tags"


@@ -155,7 +428,7 @@ EOF
   # test a complex delete where we delete elements which rely on eachother
   # in the same transaction.
   def test_upload_delete
   # test a complex delete where we delete elements which rely on eachother
   # in the same transaction.
   def test_upload_delete

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).display_name, "test"

 
     diff = XML::Document.new
     diff.root = XML::Node.new "osmChange"
 
     diff = XML::Document.new
     diff.root = XML::Node.new "osmChange"


@@ -166,12 +439,25 @@ EOF
     delete << current_ways(:used_way).to_xml_node
     delete << current_nodes(:node_used_by_relationship).to_xml_node
 
     delete << current_ways(:used_way).to_xml_node
     delete << current_nodes(:node_used_by_relationship).to_xml_node
 

+    # update the changeset to one that this user owns
+    changeset_id = changesets(:public_user_first_change).id
+    ["node", "way", "relation"].each do |type|
+      delete.find("//osmChange/delete/#{type}").each do |n| 
+        n['changeset'] = changeset_id.to_s 
+      end
+    end
+

     # upload it
     content diff
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => changeset_id

     assert_response :success, 
       "can't upload a deletion diff to changeset: #{@response.body}"
 
     assert_response :success, 
       "can't upload a deletion diff to changeset: #{@response.body}"
 

+    # check the response is well-formed
+    assert_select "diffResult>node", 1
+    assert_select "diffResult>way", 1
+    assert_select "diffResult>relation", 2
+

     # check that everything was deleted
     assert_equal false, Node.find(current_nodes(:node_used_by_relationship).id).visible
     assert_equal false, Way.find(current_ways(:used_way).id).visible
     # check that everything was deleted
     assert_equal false, Node.find(current_nodes(:node_used_by_relationship).id).visible
     assert_equal false, Way.find(current_ways(:used_way).id).visible


@@ -179,25 +465,116 @@ EOF
     assert_equal false, Relation.find(current_relations(:used_relation).id).visible
   end
 
     assert_equal false, Relation.find(current_relations(:used_relation).id).visible
   end
 

+  ##
+  # test uploading a delete with no lat/lon, as they are optional in
+  # the osmChange spec.
+  def test_upload_nolatlon_delete
+    basic_authorization users(:public_user).display_name, "test"
+
+    node = current_nodes(:public_visible_node)
+    cs = changesets(:public_user_first_change)
+    diff = "<osmChange><delete><node id='#{node.id}' version='#{node.version}' changeset='#{cs.id}'/></delete></osmChange>"
+
+    # upload it
+    content diff
+    post :upload, :id => cs.id
+    assert_response :success, 
+      "can't upload a deletion diff to changeset: #{@response.body}"
+
+    # check the response is well-formed
+    assert_select "diffResult>node", 1
+
+    # check that everything was deleted
+    assert_equal false, Node.find(node.id).visible
+  end
+
+  def test_repeated_changeset_create
+    30.times do
+      basic_authorization users(:public_user).email, "test"
+    
+      # create a temporary changeset
+      content "<osm><changeset>" +
+        "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+        "</changeset></osm>"
+      assert_difference('Changeset.count', 1) do
+        put :create
+      end
+      assert_response :success
+      changeset_id = @response.body.to_i
+    end
+  end
+
+  def test_upload_large_changeset
+    basic_authorization users(:public_user).email, "test"
+
+    # create a changeset
+    content "<osm><changeset/></osm>"
+    put :create
+    assert_response :success, "Should be able to create a changeset: #{@response.body}"
+    changeset_id = @response.body.to_i
+    
+    # upload some widely-spaced nodes, spiralling positive and negative to cause 
+    # largest bbox over-expansion possible.
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id='-1' lon='-20' lat='-10' changeset='#{changeset_id}'/>
+  <node id='-10' lon='20'  lat='10' changeset='#{changeset_id}'/>
+  <node id='-2' lon='-40' lat='-20' changeset='#{changeset_id}'/>
+  <node id='-11' lon='40'  lat='20' changeset='#{changeset_id}'/>
+  <node id='-3' lon='-60' lat='-30' changeset='#{changeset_id}'/>
+  <node id='-12' lon='60'  lat='30' changeset='#{changeset_id}'/>
+  <node id='-4' lon='-80' lat='-40' changeset='#{changeset_id}'/>
+  <node id='-13' lon='80'  lat='40' changeset='#{changeset_id}'/>
+  <node id='-5' lon='-100' lat='-50' changeset='#{changeset_id}'/>
+  <node id='-14' lon='100'  lat='50' changeset='#{changeset_id}'/>
+  <node id='-6' lon='-120' lat='-60' changeset='#{changeset_id}'/>
+  <node id='-15' lon='120'  lat='60' changeset='#{changeset_id}'/>
+  <node id='-7' lon='-140' lat='-70' changeset='#{changeset_id}'/>
+  <node id='-16' lon='140'  lat='70' changeset='#{changeset_id}'/>
+  <node id='-8' lon='-160' lat='-80' changeset='#{changeset_id}'/>
+  <node id='-17' lon='160'  lat='80' changeset='#{changeset_id}'/>
+  <node id='-9' lon='-179.9' lat='-89.9' changeset='#{changeset_id}'/>
+  <node id='-18' lon='179.9'  lat='89.9' changeset='#{changeset_id}'/>
+ </create>
+</osmChange>
+EOF
+
+    # upload it, which used to cause an error like "PGError: ERROR: 
+    # integer out of range" (bug #2152). but shouldn't any more.
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "can't upload a spatially-large diff to changeset: #{@response.body}"
+
+    # check that the changeset bbox is within bounds
+    cs = Changeset.find(changeset_id)
+    assert cs.min_lon >= -180 * SCALE, "Minimum longitude (#{cs.min_lon / SCALE}) should be >= -180 to be valid."
+    assert cs.max_lon <=  180 * SCALE, "Maximum longitude (#{cs.max_lon / SCALE}) should be <= 180 to be valid."
+    assert cs.min_lat >=  -90 * SCALE, "Minimum latitude (#{cs.min_lat / SCALE}) should be >= -90 to be valid."
+    assert cs.max_lat >=   90 * SCALE, "Maximum latitude (#{cs.max_lat / SCALE}) should be <= 90 to be valid."
+  end
+

   ##
   # test that deleting stuff in a transaction doesn't bypass the checks
   # to ensure that used elements are not deleted.
   def test_upload_delete_invalid
   ##
   # test that deleting stuff in a transaction doesn't bypass the checks
   # to ensure that used elements are not deleted.
   def test_upload_delete_invalid

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"

 
     diff = XML::Document.new
     diff.root = XML::Node.new "osmChange"
     delete = XML::Node.new "delete"
     diff.root << delete
 
     diff = XML::Document.new
     diff.root = XML::Node.new "osmChange"
     delete = XML::Node.new "delete"
     diff.root << delete

-    delete << current_relations(:visible_relation).to_xml_node
+    delete << current_relations(:public_visible_relation).to_xml_node

     delete << current_ways(:used_way).to_xml_node
     delete << current_nodes(:node_used_by_relationship).to_xml_node
 
     # upload it
     content diff
     delete << current_ways(:used_way).to_xml_node
     delete << current_nodes(:node_used_by_relationship).to_xml_node
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => 2

     assert_response :precondition_failed, 
       "shouldn't be able to upload a invalid deletion diff: #{@response.body}"
     assert_response :precondition_failed, 
       "shouldn't be able to upload a invalid deletion diff: #{@response.body}"

+    assert_equal "Precondition failed: Way 3 is still used by relations 1.", @response.body

 
     # check that nothing was, in fact, deleted
     assert_equal true, Node.find(current_nodes(:node_used_by_relationship).id).visible
 
     # check that nothing was, in fact, deleted
     assert_equal true, Node.find(current_nodes(:node_used_by_relationship).id).visible


@@ -205,27 +582,103 @@ EOF
     assert_equal true, Relation.find(current_relations(:visible_relation).id).visible
   end
 
     assert_equal true, Relation.find(current_relations(:visible_relation).id).visible
   end
 

+  ##
+  # test that a conditional delete of an in use object works.
+  def test_upload_delete_if_unused
+    basic_authorization users(:public_user).email, "test"
+
+    diff = XML::Document.new
+    diff.root = XML::Node.new "osmChange"
+    delete = XML::Node.new "delete"
+    diff.root << delete
+    delete["if-unused"] = ""
+    delete << current_relations(:public_used_relation).to_xml_node
+    delete << current_ways(:used_way).to_xml_node
+    delete << current_nodes(:node_used_by_relationship).to_xml_node
+
+    # upload it
+    content diff
+    post :upload, :id => 2
+    assert_response :success, 
+      "can't do a conditional delete of in use objects: #{@response.body}"
+
+    # check the returned payload
+    assert_select "diffResult[version=#{API_VERSION}][generator=\"OpenStreetMap server\"]", 1
+    assert_select "diffResult>node", 1
+    assert_select "diffresult>way", 1
+    assert_select "diffResult>relation", 1
+
+    # parse the response
+    doc = XML::Parser.string(@response.body).parse
+
+    # check the old IDs are all present and what we expect
+    assert_equal current_nodes(:node_used_by_relationship).id, doc.find("//diffResult/node").first["old_id"].to_i
+    assert_equal current_ways(:used_way).id, doc.find("//diffResult/way").first["old_id"].to_i
+    assert_equal current_relations(:public_used_relation).id, doc.find("//diffResult/relation").first["old_id"].to_i
+
+    # check the new IDs are all present and unchanged
+    assert_equal current_nodes(:node_used_by_relationship).id, doc.find("//diffResult/node").first["new_id"].to_i
+    assert_equal current_ways(:used_way).id, doc.find("//diffResult/way").first["new_id"].to_i
+    assert_equal current_relations(:public_used_relation).id, doc.find("//diffResult/relation").first["new_id"].to_i
+
+    # check the new versions are all present and unchanged
+    assert_equal current_nodes(:node_used_by_relationship).version, doc.find("//diffResult/node").first["new_version"].to_i
+    assert_equal current_ways(:used_way).version, doc.find("//diffResult/way").first["new_version"].to_i
+    assert_equal current_relations(:public_used_relation).version, doc.find("//diffResult/relation").first["new_version"].to_i
+
+    # check that nothing was, in fact, deleted
+    assert_equal true, Node.find(current_nodes(:node_used_by_relationship).id).visible
+    assert_equal true, Way.find(current_ways(:used_way).id).visible
+    assert_equal true, Relation.find(current_relations(:public_used_relation).id).visible
+  end
+
+  ##
+  # upload an element with a really long tag value
+  def test_upload_invalid_too_long_tag
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id
+
+    # simple diff to create a node way and relation using placeholders
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id='-1' lon='0' lat='0' changeset='#{cs_id}'>
+   <tag k='foo' v='#{"x"*256}'/>
+  </node>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => cs_id
+    assert_response :bad_request, 
+      "shoudln't be able to upload too long a tag to changeset: #{@response.body}"
+
+  end
+    

   ##
   # upload something which creates new objects and inserts them into
   # existing containers using placeholders.
   def test_upload_complex
   ##
   # upload something which creates new objects and inserts them into
   # existing containers using placeholders.
   def test_upload_complex

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <create>
 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <create>

-  <node id='-1' lon='0' lat='0' changeset='1'>
+  <node id='-1' lon='0' lat='0' changeset='#{cs_id}'>

    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>
  </create>
  <modify>
    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>
  </create>
  <modify>

-  <way id='1' changeset='1' version='1'>
+  <way id='1' changeset='#{cs_id}' version='1'>

    <nd ref='-1'/>
    <nd ref='3'/>
   </way>
    <nd ref='-1'/>
    <nd ref='3'/>
   </way>

-  <relation id='1' changeset='1' version='1'>
+  <relation id='1' changeset='#{cs_id}' version='1'>

    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='-1'/>
    <member type='relation' role='some' ref='3'/>
    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='-1'/>
    <member type='relation' role='some' ref='3'/>


@@ -236,19 +689,19 @@ EOF
 
     # upload it
     content diff
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :success, 
       "can't upload a complex diff to changeset: #{@response.body}"
 
     # check the returned payload
     assert_response :success, 
       "can't upload a complex diff to changeset: #{@response.body}"
 
     # check the returned payload

-    assert_select "osm[version=#{API_VERSION}][generator=\"#{GENERATOR}\"]", 1
-    assert_select "osm>node", 1
-    assert_select "osm>way", 1
-    assert_select "osm>relation", 1
+    assert_select "diffResult[version=#{API_VERSION}][generator=\"#{GENERATOR}\"]", 1
+    assert_select "diffResult>node", 1
+    assert_select "diffResult>way", 1
+    assert_select "diffResult>relation", 1

 
     # inspect the response to find out what the new element IDs are
     doc = XML::Parser.string(@response.body).parse
 
     # inspect the response to find out what the new element IDs are
     doc = XML::Parser.string(@response.body).parse

-    new_node_id = doc.find("//osm/node").first["new_id"].to_i
+    new_node_id = doc.find("//diffResult/node").first["new_id"].to_i

 
     # check that the changes made it into the database
     assert_equal 2, Node.find(new_node_id).tags.size, "new node should have two tags"
 
     # check that the changes made it into the database
     assert_equal 2, Node.find(new_node_id).tags.size, "new node should have two tags"


@@ -264,26 +717,27 @@ EOF
   # create a diff which references several changesets, which should cause
   # a rollback and none of the diff gets committed
   def test_upload_invalid_changesets
   # create a diff which references several changesets, which should cause
   # a rollback and none of the diff gets committed
   def test_upload_invalid_changesets

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <modify>
 
     # simple diff to create a node way and relation using placeholders
     diff = <<EOF
 <osmChange>
  <modify>

-  <node id='1' lon='0' lat='0' changeset='1' version='1'/>
-  <way id='1' changeset='1' version='1'>
+  <node id='1' lon='0' lat='0' changeset='#{cs_id}' version='1'/>
+  <way id='1' changeset='#{cs_id}' version='1'>

    <nd ref='3'/>
   </way>
  </modify>
  <modify>
    <nd ref='3'/>
   </way>
  </modify>
  <modify>

-  <relation id='1' changeset='1' version='1'>
+  <relation id='1' changeset='#{cs_id}' version='1'>

    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>
   </relation>
  </modify>
  <create>
    <member type='way' role='some' ref='3'/>
    <member type='node' role='some' ref='5'/>
    <member type='relation' role='some' ref='3'/>
   </relation>
  </modify>
  <create>

-  <node id='-1' changeset='4'>
+  <node id='-1' lon='0' lat='0' changeset='4'>

    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>
    <tag k='foo' v='bar'/>
    <tag k='baz' v='bat'/>
   </node>


@@ -297,7 +751,7 @@ EOF
 
     # upload it
     content diff
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :conflict, 
       "uploading a diff with multiple changsets should have failed"
 
     assert_response :conflict, 
       "uploading a diff with multiple changsets should have failed"
 


@@ -309,7 +763,8 @@ EOF
   ##
   # upload multiple versions of the same element in the same diff.
   def test_upload_multiple_valid
   ##
   # upload multiple versions of the same element in the same diff.
   def test_upload_multiple_valid

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     # change the location of a node multiple times, each time referencing
     # the last version. doesn't this depend on version numbers being
 
     # change the location of a node multiple times, each time referencing
     # the last version. doesn't this depend on version numbers being


@@ -317,43 +772,49 @@ EOF
     diff = <<EOF
 <osmChange>
  <modify>
     diff = <<EOF
 <osmChange>
  <modify>

-  <node id='1' lon='0' lat='0' changeset='1' version='1'/>
-  <node id='1' lon='1' lat='0' changeset='1' version='2'/>
-  <node id='1' lon='1' lat='1' changeset='1' version='3'/>
-  <node id='1' lon='1' lat='2' changeset='1' version='4'/>
-  <node id='1' lon='2' lat='2' changeset='1' version='5'/>
-  <node id='1' lon='3' lat='2' changeset='1' version='6'/>
-  <node id='1' lon='3' lat='3' changeset='1' version='7'/>
-  <node id='1' lon='9' lat='9' changeset='1' version='8'/>
+  <node id='1' lon='0' lat='0' changeset='#{cs_id}' version='1'/>
+  <node id='1' lon='1' lat='0' changeset='#{cs_id}' version='2'/>
+  <node id='1' lon='1' lat='1' changeset='#{cs_id}' version='3'/>
+  <node id='1' lon='1' lat='2' changeset='#{cs_id}' version='4'/>
+  <node id='1' lon='2' lat='2' changeset='#{cs_id}' version='5'/>
+  <node id='1' lon='3' lat='2' changeset='#{cs_id}' version='6'/>
+  <node id='1' lon='3' lat='3' changeset='#{cs_id}' version='7'/>
+  <node id='1' lon='9' lat='9' changeset='#{cs_id}' version='8'/>

  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff
  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :success, 
       "can't upload multiple versions of an element in a diff: #{@response.body}"
     assert_response :success, 
       "can't upload multiple versions of an element in a diff: #{@response.body}"

+    
+    # check the response is well-formed. its counter-intuitive, but the
+    # API will return multiple elements with the same ID and different
+    # version numbers for each change we made.
+    assert_select "diffResult>node", 8

   end
 
   ##
   # upload multiple versions of the same element in the same diff, but
   # keep the version numbers the same.
   def test_upload_multiple_duplicate
   end
 
   ##
   # upload multiple versions of the same element in the same diff, but
   # keep the version numbers the same.
   def test_upload_multiple_duplicate

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     diff = <<EOF
 <osmChange>
  <modify>
 
     diff = <<EOF
 <osmChange>
  <modify>

-  <node id='1' lon='0' lat='0' changeset='1' version='1'/>
-  <node id='1' lon='1' lat='1' changeset='1' version='1'/>
+  <node id='1' lon='0' lat='0' changeset='#{cs_id}' version='1'/>
+  <node id='1' lon='1' lat='1' changeset='#{cs_id}' version='1'/>

  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff
  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :conflict, 
       "shouldn't be able to upload the same element twice in a diff: #{@response.body}"
   end
     assert_response :conflict, 
       "shouldn't be able to upload the same element twice in a diff: #{@response.body}"
   end


@@ -361,19 +822,20 @@ EOF
   ##
   # try to upload some elements without specifying the version
   def test_upload_missing_version
   ##
   # try to upload some elements without specifying the version
   def test_upload_missing_version

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

 
     diff = <<EOF
 <osmChange>
  <modify>
 
     diff = <<EOF
 <osmChange>
  <modify>

-  <node id='1' lon='1' lat='1' changeset='1'/>
+ <node id='1' lon='1' lat='1' changeset='cs_id'/>

  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff
  </modify>
 </osmChange>
 EOF
 
     # upload it
     content diff

-    post :upload, :id => 1
+    post :upload, :id => cs_id

     assert_response :bad_request, 
       "shouldn't be able to upload an element without version: #{@response.body}"
   end
     assert_response :bad_request, 
       "shouldn't be able to upload an element without version: #{@response.body}"
   end


@@ -381,85 +843,486 @@ EOF
   ##
   # try to upload with commands other than create, modify, or delete
   def test_action_upload_invalid
   ##
   # try to upload with commands other than create, modify, or delete
   def test_action_upload_invalid

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"
+    cs_id = changesets(:public_user_first_change).id

     
     diff = <<EOF
 <osmChange>
   <ping>
     
     diff = <<EOF
 <osmChange>
   <ping>

-    <node id='1' lon='1' lat='1' changeset='1' />
+   <node id='1' lon='1' lat='1' changeset='#{cs_id}' />

   </ping>
 </osmChange>
 EOF
   content diff
   </ping>
 </osmChange>
 EOF
   content diff

-  post :upload, :id => 1
+  post :upload, :id => cs_id

   assert_response :bad_request, "Shouldn't be able to upload a diff with the action ping"
   assert_response :bad_request, "Shouldn't be able to upload a diff with the action ping"

-  assert_equal @response.body, "Unknown action ping, choices are create, modify, delete."
+  assert_equal @response.body, "Unknown action ping, choices are create, modify, delete"

   end
 
   ##
   end
 
   ##

-  # when we make some simple changes we get the same changes back from the 
-  # diff download.
-  def test_diff_download_simple
-    basic_authorization(users(:normal_user).email, "test")
-
-    # create a temporary changeset
-    content "<osm><changeset>" +
-      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
-      "</changeset></osm>"
-    put :create
-    assert_response :success
-    changeset_id = @response.body.to_i
+  # upload a valid changeset which has a mixture of whitespace
+  # to check a bug reported by ivansanchez (#1565).
+  def test_upload_whitespace_valid
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id

 
 

-    # add a diff to it

     diff = <<EOF
 <osmChange>
     diff = <<EOF
 <osmChange>

+ <modify><node id='1' lon='0' lat='0' changeset='#{changeset_id}' 
+  version='1'></node>
+  <node id='1' lon='1' lat='1' changeset='#{changeset_id}' version='2'><tag k='k' v='v'/></node></modify>

  <modify>
  <modify>

-  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
-  <node id='1' lon='1' lat='0' changeset='#{changeset_id}' version='2'/>
-  <node id='1' lon='1' lat='1' changeset='#{changeset_id}' version='3'/>
-  <node id='1' lon='1' lat='2' changeset='#{changeset_id}' version='4'/>
-  <node id='1' lon='2' lat='2' changeset='#{changeset_id}' version='5'/>
-  <node id='1' lon='3' lat='2' changeset='#{changeset_id}' version='6'/>
-  <node id='1' lon='3' lat='3' changeset='#{changeset_id}' version='7'/>
-  <node id='1' lon='9' lat='9' changeset='#{changeset_id}' version='8'/>
- </modify>
-</osmChange>
+ <relation id='1' changeset='#{changeset_id}' version='1'><member 
+   type='way' role='some' ref='3'/><member 
+    type='node' role='some' ref='5'/>
+   <member type='relation' role='some' ref='3'/>
+  </relation>
+ </modify></osmChange>

 EOF
 
     # upload it
     content diff
     post :upload, :id => changeset_id
     assert_response :success, 
 EOF
 
     # upload it
     content diff
     post :upload, :id => changeset_id
     assert_response :success, 

-      "can't upload multiple versions of an element in a diff: #{@response.body}"
-    
-    get :download, :id => changeset_id
-    assert_response :success
+      "can't upload a valid diff with whitespace variations to changeset: #{@response.body}"

 
 

-    assert_select "osmChange", 1
-    assert_select "osmChange>modify", 8
-    assert_select "osmChange>modify>node", 8
+    # check the response is well-formed
+    assert_select "diffResult>node", 2
+    assert_select "diffResult>relation", 1
+
+    # check that the changes made it into the database
+    assert_equal 1, Node.find(1).tags.size, "node 1 should now have one tag"
+    assert_equal 0, Relation.find(1).tags.size, "relation 1 should now have no tags"

   end
   end

-  
-  ##
-  # when we make some complex changes we get the same changes back from the 
-  # diff download.
-  def test_diff_download_complex
-    basic_authorization(users(:normal_user).email, "test")

 
 

-    # create a temporary changeset
-    content "<osm><changeset>" +
-      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
-      "</changeset></osm>"
-    put :create
-    assert_response :success
-    changeset_id = @response.body.to_i
+  ##
+  # upload a valid changeset which has a mixture of whitespace
+  # to check a bug reported by ivansanchez.
+  def test_upload_reuse_placeholder_valid
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id

 
 

-    # add a diff to it

     diff = <<EOF
 <osmChange>
     diff = <<EOF
 <osmChange>

- <delete>
-  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
- </delete>
+ <create>
+  <node id='-1' lon='0' lat='0' changeset='#{changeset_id}'>
+   <tag k="foo" v="bar"/>
+  </node>
+ </create>
+ <modify>
+  <node id='-1' lon='1' lat='1' changeset='#{changeset_id}' version='1'/>
+ </modify>
+ <delete>
+  <node id='-1' lon='2' lat='2' changeset='#{changeset_id}' version='2'/>
+ </delete>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "can't upload a valid diff with re-used placeholders to changeset: #{@response.body}"
+
+    # check the response is well-formed
+    assert_select "diffResult>node", 3
+    assert_select "diffResult>node[old_id=-1]", 3
+  end
+
+  ##
+  # test what happens if a diff upload re-uses placeholder IDs in an
+  # illegal way.
+  def test_upload_placeholder_invalid
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id
+
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id='-1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+  <node id='-1' lon='1' lat='1' changeset='#{changeset_id}' version='1'/>
+  <node id='-1' lon='2' lat='2' changeset='#{changeset_id}' version='2'/>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :bad_request, 
+      "shouldn't be able to re-use placeholder IDs"
+  end
+
+  ##
+  # test that uploading a way referencing invalid placeholders gives a 
+  # proper error, not a 500.
+  def test_upload_placeholder_invalid_way
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id
+
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id="-1" lon="0" lat="0" changeset="#{changeset_id}" version="1"/>
+  <node id="-2" lon="1" lat="1" changeset="#{changeset_id}" version="1"/>
+  <node id="-3" lon="2" lat="2" changeset="#{changeset_id}" version="1"/>
+  <way id="-1" changeset="#{changeset_id}" version="1">
+   <nd ref="-1"/>
+   <nd ref="-2"/>
+   <nd ref="-3"/>
+   <nd ref="-4"/>
+  </way>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :bad_request, 
+      "shouldn't be able to use invalid placeholder IDs"
+    assert_equal "Placeholder node not found for reference -4 in way -1", @response.body
+
+    # the same again, but this time use an existing way
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id="-1" lon="0" lat="0" changeset="#{changeset_id}" version="1"/>
+  <node id="-2" lon="1" lat="1" changeset="#{changeset_id}" version="1"/>
+  <node id="-3" lon="2" lat="2" changeset="#{changeset_id}" version="1"/>
+  <way id="1" changeset="#{changeset_id}" version="1">
+   <nd ref="-1"/>
+   <nd ref="-2"/>
+   <nd ref="-3"/>
+   <nd ref="-4"/>
+  </way>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :bad_request, 
+      "shouldn't be able to use invalid placeholder IDs"
+    assert_equal "Placeholder node not found for reference -4 in way 1", @response.body
+  end
+
+  ##
+  # test that uploading a relation referencing invalid placeholders gives a 
+  # proper error, not a 500.
+  def test_upload_placeholder_invalid_relation
+    basic_authorization users(:public_user).email, "test"
+    changeset_id = changesets(:public_user_first_change).id
+
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id="-1" lon="0" lat="0" changeset="#{changeset_id}" version="1"/>
+  <node id="-2" lon="1" lat="1" changeset="#{changeset_id}" version="1"/>
+  <node id="-3" lon="2" lat="2" changeset="#{changeset_id}" version="1"/>
+  <relation id="-1" changeset="#{changeset_id}" version="1">
+   <member type="node" role="foo" ref="-1"/>
+   <member type="node" role="foo" ref="-2"/>
+   <member type="node" role="foo" ref="-3"/>
+   <member type="node" role="foo" ref="-4"/>
+  </relation>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :bad_request, 
+      "shouldn't be able to use invalid placeholder IDs"
+    assert_equal "Placeholder Node not found for reference -4 in relation -1.", @response.body
+
+    # the same again, but this time use an existing way
+    diff = <<EOF
+<osmChange>
+ <create>
+  <node id="-1" lon="0" lat="0" changeset="#{changeset_id}" version="1"/>
+  <node id="-2" lon="1" lat="1" changeset="#{changeset_id}" version="1"/>
+  <node id="-3" lon="2" lat="2" changeset="#{changeset_id}" version="1"/>
+  <relation id="1" changeset="#{changeset_id}" version="1">
+   <member type="node" role="foo" ref="-1"/>
+   <member type="node" role="foo" ref="-2"/>
+   <member type="node" role="foo" ref="-3"/>
+   <member type="way" role="bar" ref="-1"/>
+  </relation>
+ </create>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :bad_request, 
+      "shouldn't be able to use invalid placeholder IDs"
+    assert_equal "Placeholder Way not found for reference -1 in relation 1.", @response.body
+  end
+
+  ##
+  # test what happens if a diff is uploaded containing only a node
+  # move.
+  def test_upload_node_move
+    basic_authorization users(:public_user).email, "test"
+
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :success
+    changeset_id = @response.body.to_i
+
+    old_node = current_nodes(:visible_node)
+
+    diff = XML::Document.new
+    diff.root = XML::Node.new "osmChange"
+    modify = XML::Node.new "modify"
+    xml_old_node = old_node.to_xml_node
+    xml_old_node["lat"] = (2.0).to_s
+    xml_old_node["lon"] = (2.0).to_s
+    xml_old_node["changeset"] = changeset_id.to_s
+    modify << xml_old_node
+    diff.root << modify
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "diff should have uploaded OK"
+
+    # check the bbox
+    changeset = Changeset.find(changeset_id)
+    assert_equal 1*SCALE, changeset.min_lon, "min_lon should be 1 degree"
+    assert_equal 2*SCALE, changeset.max_lon, "max_lon should be 2 degrees"
+    assert_equal 1*SCALE, changeset.min_lat, "min_lat should be 1 degree"
+    assert_equal 2*SCALE, changeset.max_lat, "max_lat should be 2 degrees"
+  end
+
+  ##
+  # test what happens if a diff is uploaded adding a node to a way.
+  def test_upload_way_extend
+    basic_authorization users(:public_user).email, "test"
+
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :success
+    changeset_id = @response.body.to_i
+
+    old_way = current_ways(:visible_way)
+
+    diff = XML::Document.new
+    diff.root = XML::Node.new "osmChange"
+    modify = XML::Node.new "modify"
+    xml_old_way = old_way.to_xml_node
+    nd_ref = XML::Node.new "nd"
+    nd_ref["ref"] = current_nodes(:visible_node).id.to_s
+    xml_old_way << nd_ref
+    xml_old_way["changeset"] = changeset_id.to_s
+    modify << xml_old_way
+    diff.root << modify
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "diff should have uploaded OK"
+
+    # check the bbox
+    changeset = Changeset.find(changeset_id)
+    assert_equal 1*SCALE, changeset.min_lon, "min_lon should be 1 degree"
+    assert_equal 3*SCALE, changeset.max_lon, "max_lon should be 3 degrees"
+    assert_equal 1*SCALE, changeset.min_lat, "min_lat should be 1 degree"
+    assert_equal 3*SCALE, changeset.max_lat, "max_lat should be 3 degrees"
+  end
+
+  ##
+  # test for more issues in #1568
+  def test_upload_empty_invalid
+    basic_authorization users(:public_user).email, "test"
+
+    [ "<osmChange/>",
+      "<osmChange></osmChange>",
+      "<osmChange><modify/></osmChange>",
+      "<osmChange><modify></modify></osmChange>"
+    ].each do |diff|
+      # upload it
+      content diff
+      post :upload, :id => changesets(:public_user_first_change).id
+      assert_response(:success, "should be able to upload " +
+                      "empty changeset: " + diff)
+    end
+  end
+
+  ##
+  # test that the X-Error-Format header works to request XML errors
+  def test_upload_xml_errors
+    basic_authorization users(:public_user).email, "test"
+
+    # try and delete a node that is in use
+    diff = XML::Document.new
+    diff.root = XML::Node.new "osmChange"
+    delete = XML::Node.new "delete"
+    diff.root << delete
+    delete << current_nodes(:node_used_by_relationship).to_xml_node
+
+    # upload it
+    content diff
+    error_format "xml"
+    post :upload, :id => 2
+    assert_response :success, 
+      "failed to return error in XML format"
+
+    # check the returned payload
+    assert_select "osmError[version=#{API_VERSION}][generator=\"OpenStreetMap server\"]", 1
+    assert_select "osmError>status", 1
+    assert_select "osmError>message", 1
+
+  end
+
+  ##
+  # when we make some simple changes we get the same changes back from the 
+  # diff download.
+  def test_diff_download_simple
+    ## First try with the normal user, which should get a forbidden
+    basic_authorization(users(:normal_user).email, "test")
+
+    # create a temporary changeset
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :forbidden
+    
+    
+    
+    ## Now try with the public user
+    basic_authorization(users(:public_user).email, "test")
+
+    # create a temporary changeset
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :success
+    changeset_id = @response.body.to_i
+
+    # add a diff to it
+    diff = <<EOF
+<osmChange>
+ <modify>
+  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+  <node id='1' lon='1' lat='0' changeset='#{changeset_id}' version='2'/>
+  <node id='1' lon='1' lat='1' changeset='#{changeset_id}' version='3'/>
+  <node id='1' lon='1' lat='2' changeset='#{changeset_id}' version='4'/>
+  <node id='1' lon='2' lat='2' changeset='#{changeset_id}' version='5'/>
+  <node id='1' lon='3' lat='2' changeset='#{changeset_id}' version='6'/>
+  <node id='1' lon='3' lat='3' changeset='#{changeset_id}' version='7'/>
+  <node id='1' lon='9' lat='9' changeset='#{changeset_id}' version='8'/>
+ </modify>
+</osmChange>
+EOF
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "can't upload multiple versions of an element in a diff: #{@response.body}"
+    
+    get :download, :id => changeset_id
+    assert_response :success
+
+    assert_select "osmChange", 1
+    assert_select "osmChange>modify", 8
+    assert_select "osmChange>modify>node", 8
+  end
+  
+  ##
+  # culled this from josm to ensure that nothing in the way that josm
+  # is formatting the request is causing it to fail.
+  #
+  # NOTE: the error turned out to be something else completely!
+  def test_josm_upload
+    basic_authorization(users(:public_user).email, "test")
+
+    # create a temporary changeset
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :success
+    changeset_id = @response.body.to_i
+
+    diff = <<OSMFILE
+<osmChange version="0.6" generator="JOSM">
+<create version="0.6" generator="JOSM">
+  <node id='-1' visible='true' changeset='#{changeset_id}' lat='51.49619982187321' lon='-0.18722061869438314' />
+  <node id='-2' visible='true' changeset='#{changeset_id}' lat='51.496359883909605' lon='-0.18653093576241928' />
+  <node id='-3' visible='true' changeset='#{changeset_id}' lat='51.49598132358285' lon='-0.18719613290981638' />
+  <node id='-4' visible='true' changeset='#{changeset_id}' lat='51.4961591711078' lon='-0.18629015888084607' />
+  <node id='-5' visible='true' changeset='#{changeset_id}' lat='51.49582126021711' lon='-0.18708186591517145' />
+  <node id='-6' visible='true' changeset='#{changeset_id}' lat='51.49591018437858' lon='-0.1861432441734455' />
+  <node id='-7' visible='true' changeset='#{changeset_id}' lat='51.49560784152179' lon='-0.18694719410005425' />
+  <node id='-8' visible='true' changeset='#{changeset_id}' lat='51.49567389979617' lon='-0.1860289771788006' />
+  <node id='-9' visible='true' changeset='#{changeset_id}' lat='51.49543761398892' lon='-0.186820684213126' />
+  <way id='-10' action='modiy' visible='true' changeset='#{changeset_id}'>
+    <nd ref='-1' />
+    <nd ref='-2' />
+    <nd ref='-3' />
+    <nd ref='-4' />
+    <nd ref='-5' />
+    <nd ref='-6' />
+    <nd ref='-7' />
+    <nd ref='-8' />
+    <nd ref='-9' />
+    <tag k='highway' v='residential' />
+    <tag k='name' v='Foobar Street' />
+  </way>
+</create>
+</osmChange>
+OSMFILE
+
+    # upload it
+    content diff
+    post :upload, :id => changeset_id
+    assert_response :success, 
+      "can't upload a diff from JOSM: #{@response.body}"
+    
+    get :download, :id => changeset_id
+    assert_response :success
+
+    assert_select "osmChange", 1
+    assert_select "osmChange>create>node", 9
+    assert_select "osmChange>create>way", 1
+    assert_select "osmChange>create>way>nd", 9
+    assert_select "osmChange>create>way>tag", 2
+  end
+
+  ##
+  # when we make some complex changes we get the same changes back from the 
+  # diff download.
+  def test_diff_download_complex
+    basic_authorization(users(:public_user).email, "test")
+
+    # create a temporary changeset
+    content "<osm><changeset>" +
+      "<tag k='created_by' v='osm test suite checking changesets'/>" + 
+      "</changeset></osm>"
+    put :create
+    assert_response :success
+    changeset_id = @response.body.to_i
+
+    # add a diff to it
+    diff = <<EOF
+<osmChange>
+ <delete>
+  <node id='1' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+ </delete>

  <create>
   <node id='-1' lon='9' lat='9' changeset='#{changeset_id}' version='0'/>
   <node id='-2' lon='8' lat='9' changeset='#{changeset_id}' version='0'/>
  <create>
   <node id='-1' lon='9' lat='9' changeset='#{changeset_id}' version='0'/>
   <node id='-2' lon='8' lat='9' changeset='#{changeset_id}' version='0'/>


@@ -496,10 +1359,26 @@ EOF
     assert_select "osmChange>modify>way", 1
   end
 
     assert_select "osmChange>modify>way", 1
   end
 

+  def test_changeset_download
+    get :download, :id => changesets(:normal_user_first_change).id
+    assert_response :success
+    assert_template nil
+    #print @response.body
+    # FIXME needs more assert_select tests
+    assert_select "osmChange[version='#{API_VERSION}'][generator='#{GENERATOR}']" do
+      assert_select "create", :count => 5
+      assert_select "create>node[id=#{nodes(:used_node_2).node_id}][visible=#{nodes(:used_node_2).visible?}][version=#{nodes(:used_node_2).version}]" do
+        assert_select "tag[k=#{node_tags(:t3).k}][v=#{node_tags(:t3).v}]"
+      end
+      assert_select "create>node[id=#{nodes(:visible_node).node_id}]"
+    end
+  end
+  

   ##
   # check that the bounding box of a changeset gets updated correctly
   ##
   # check that the bounding box of a changeset gets updated correctly

+  ## FIXME: This should really be moded to a integration test due to the with_controller

   def test_changeset_bbox
   def test_changeset_bbox

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).email, "test"

 
     # create a new changeset
     content "<osm><changeset/></osm>"
 
     # create a new changeset
     content "<osm><changeset/></osm>"


@@ -517,10 +1396,10 @@ EOF
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset."
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset."

-    assert_select "osm>changeset[min_lon=1]", 1
-    assert_select "osm>changeset[max_lon=1]", 1
-    assert_select "osm>changeset[min_lat=2]", 1
-    assert_select "osm>changeset[max_lat=2]", 1
+    assert_select "osm>changeset[min_lon=1.0]", 1
+    assert_select "osm>changeset[max_lon=1.0]", 1
+    assert_select "osm>changeset[min_lat=2.0]", 1
+    assert_select "osm>changeset[max_lat=2.0]", 1

 
     # add another node to it
     with_controller(NodeController.new) do
 
     # add another node to it
     with_controller(NodeController.new) do


@@ -532,12 +1411,12 @@ EOF
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset for the second time."
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset for the second time."

-    assert_select "osm>changeset[min_lon=1]", 1
-    assert_select "osm>changeset[max_lon=2]", 1
-    assert_select "osm>changeset[min_lat=1]", 1
-    assert_select "osm>changeset[max_lat=2]", 1
+    assert_select "osm>changeset[min_lon=1.0]", 1
+    assert_select "osm>changeset[max_lon=2.0]", 1
+    assert_select "osm>changeset[min_lat=1.0]", 1
+    assert_select "osm>changeset[max_lat=2.0]", 1

 
 

-    # add (delete) a way to it
+    # add (delete) a way to it, which contains a point at (3,3)

     with_controller(WayController.new) do
       content update_changeset(current_ways(:visible_way).to_xml,
                                changeset_id)
     with_controller(WayController.new) do
       content update_changeset(current_ways(:visible_way).to_xml,
                                changeset_id)


@@ -548,16 +1427,17 @@ EOF
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset for the third time."
     # get the bounding box back from the changeset
     get :read, :id => changeset_id
     assert_response :success, "Couldn't read back changeset for the third time."

-    assert_select "osm>changeset[min_lon=1]", 1
-    assert_select "osm>changeset[max_lon=3]", 1
-    assert_select "osm>changeset[min_lat=1]", 1
-    assert_select "osm>changeset[max_lat=3]", 1    
+    # note that the 3.1 here is because of the bbox overexpansion
+    assert_select "osm>changeset[min_lon=1.0]", 1
+    assert_select "osm>changeset[max_lon=3.1]", 1
+    assert_select "osm>changeset[min_lat=1.0]", 1
+    assert_select "osm>changeset[max_lat=3.1]", 1    

   end
 
   ##
   # test that the changeset :include method works as it should
   def test_changeset_include
   end
 
   ##
   # test that the changeset :include method works as it should
   def test_changeset_include

-    basic_authorization "test@openstreetmap.org", "test"
+    basic_authorization users(:public_user).display_name, "test"

 
     # create a new changeset
     content "<osm><changeset/></osm>"
 
     # create a new changeset
     content "<osm><changeset/></osm>"


@@ -575,16 +1455,378 @@ EOF
     check_after_include(changeset_id, -1, -1, [-1, -1,  4,  3])
     check_after_include(changeset_id, -2,  5, [-2, -1,  4,  5])
   end
     check_after_include(changeset_id, -1, -1, [-1, -1,  4,  3])
     check_after_include(changeset_id, -2,  5, [-2, -1,  4,  5])
   end

+  
+  ##
+  # test that a not found, wrong method with the expand bbox works as expected
+  def test_changeset_expand_bbox_error
+    basic_authorization users(:public_user).display_name, "test"
+    
+    # create a new changeset
+    content "<osm><changeset/></osm>"
+    put :create
+    assert_response :success, "Creating of changeset failed."
+    changeset_id = @response.body.to_i
+    
+    lon=58.2
+    lat=-0.45
+    
+    # Try and put
+    content "<osm><node lon='#{lon}' lat='#{lat}'/></osm>"
+    put :expand_bbox, :id => changeset_id
+    assert_response :method_not_allowed, "shouldn't be able to put a bbox expand"
+
+    # Try to get the update
+    content "<osm><node lon='#{lon}' lat='#{lat}'/></osm>"
+    get :expand_bbox, :id => changeset_id
+    assert_response :method_not_allowed, "shouldn't be able to get a bbox expand"
+    
+    # Try to use a hopefully missing changeset
+    content "<osm><node lon='#{lon}' lat='#{lat}'/></osm>"
+    post :expand_bbox, :id => changeset_id+13245
+    assert_response :not_found, "shouldn't be able to do a bbox expand on a nonexistant changeset"
+
+  end
+
+  ##
+  # test the query functionality of changesets
+  def test_query
+    get :query, :bbox => "-10,-10, 10, 10"
+    assert_response :success, "can't get changesets in bbox"
+    assert_changesets [1,4,6]
+
+    get :query, :bbox => "4.5,4.5,4.6,4.6"
+    assert_response :success, "can't get changesets in bbox"
+    assert_changesets [1]
+
+    # not found when looking for changesets of non-existing users
+    get :query, :user => User.maximum(:id) + 1
+    assert_response :not_found
+    get :query, :display_name => " "
+    assert_response :not_found
+
+    # can't get changesets of user 1 without authenticating
+    get :query, :user => users(:normal_user).id
+    assert_response :not_found, "shouldn't be able to get changesets by non-public user (ID)"
+    get :query, :display_name => users(:normal_user).display_name
+    assert_response :not_found, "shouldn't be able to get changesets by non-public user (name)"
+
+    # but this should work
+    basic_authorization "test@openstreetmap.org", "test"
+    get :query, :user => users(:normal_user).id
+    assert_response :success, "can't get changesets by user ID"
+    assert_changesets [1,3,6]
+
+    get :query, :display_name => users(:normal_user).display_name
+    assert_response :success, "can't get changesets by user name"
+    assert_changesets [1,3,6]
+
+    # check that the correct error is given when we provide both UID and name
+    get :query, :user => users(:normal_user).id, :display_name => users(:normal_user).display_name
+    assert_response :bad_request, "should be a bad request to have both ID and name specified"
+
+    get :query, :user => users(:normal_user).id, :open => true
+    assert_response :success, "can't get changesets by user and open"
+    assert_changesets [1]
+
+    get :query, :time => '2007-12-31'
+    assert_response :success, "can't get changesets by time-since"
+    assert_changesets [1,2,4,5,6]
+
+    get :query, :time => '2008-01-01T12:34Z'
+    assert_response :success, "can't get changesets by time-since with hour"
+    assert_changesets [1,2,4,5,6]
+
+    get :query, :time => '2007-12-31T23:59Z,2008-01-01T00:01Z'
+    assert_response :success, "can't get changesets by time-range"
+    assert_changesets [1,5,6]
+
+    get :query, :open => 'true'
+    assert_response :success, "can't get changesets by open-ness"
+    assert_changesets [1,2,4]
+
+    get :query, :closed => 'true'
+    assert_response :success, "can't get changesets by closed-ness"
+    assert_changesets [3,5,6,7]
+
+    get :query, :closed => 'true', :user => users(:normal_user).id
+    assert_response :success, "can't get changesets by closed-ness and user"
+    assert_changesets [3,6]
+
+    get :query, :closed => 'true', :user => users(:public_user).id
+    assert_response :success, "can't get changesets by closed-ness and user"
+    assert_changesets [7]
+  end
+
+  ##
+  # check that errors are returned if garbage is inserted 
+  # into query strings
+  def test_query_invalid
+    [ "abracadabra!",
+      "1,2,3,F",
+      ";drop table users;"
+      ].each do |bbox|
+      get :query, :bbox => bbox
+      assert_response :bad_request, "'#{bbox}' isn't a bbox"
+    end
+
+    [ "now()",
+      "00-00-00",
+      ";drop table users;",
+      ",",
+      "-,-"
+      ].each do |time|
+      get :query, :time => time
+      assert_response :bad_request, "'#{time}' isn't a valid time range"
+    end
+
+    [ "me",
+      "foobar",
+      "-1",
+      "0"
+      ].each do |uid|
+      get :query, :user => uid
+      assert_response :bad_request, "'#{uid}' isn't a valid user ID"
+    end
+  end
+
+  ##
+  # check updating tags on a changeset
+  def test_changeset_update
+    ## First try with the non-public user
+    changeset = changesets(:normal_user_first_change)
+    new_changeset = changeset.to_xml
+    new_tag = XML::Node.new "tag"
+    new_tag['k'] = "tagtesting"
+    new_tag['v'] = "valuetesting"
+    new_changeset.find("//osm/changeset").first << new_tag
+    content new_changeset
+
+    # try without any authorization
+    put :update, :id => changeset.id
+    assert_response :unauthorized
+
+    # try with the wrong authorization
+    basic_authorization users(:public_user).email, "test"
+    put :update, :id => changeset.id
+    assert_response :conflict
+
+    # now this should get an unauthorized
+    basic_authorization users(:normal_user).email, "test"
+    put :update, :id => changeset.id
+    assert_require_public_data "user with their data non-public, shouldn't be able to edit their changeset"
+    
+    
+    ## Now try with the public user
+    changeset = changesets(:public_user_first_change)
+    new_changeset = changeset.to_xml
+    new_tag = XML::Node.new "tag"
+    new_tag['k'] = "tagtesting"
+    new_tag['v'] = "valuetesting"
+    new_changeset.find("//osm/changeset").first << new_tag
+    content new_changeset
+    
+    # try without any authorization
+    @request.env["HTTP_AUTHORIZATION"] = nil
+    put :update, :id => changeset.id
+    assert_response :unauthorized
+
+    # try with the wrong authorization
+    basic_authorization users(:second_public_user).email, "test"
+    put :update, :id => changeset.id
+    assert_response :conflict
+
+    # now this should work...
+    basic_authorization users(:public_user).email, "test"
+    put :update, :id => changeset.id
+    assert_response :success
+
+    assert_select "osm>changeset[id=#{changeset.id}]", 1
+    assert_select "osm>changeset>tag", 2
+    assert_select "osm>changeset>tag[k=tagtesting][v=valuetesting]", 1
+  end
+  
+  ##
+  # check that a user different from the one who opened the changeset
+  # can't modify it.
+  def test_changeset_update_invalid
+    basic_authorization users(:public_user).email, "test"
+
+    changeset = changesets(:normal_user_first_change)
+    new_changeset = changeset.to_xml
+    new_tag = XML::Node.new "tag"
+    new_tag['k'] = "testing"
+    new_tag['v'] = "testing"
+    new_changeset.find("//osm/changeset").first << new_tag
+
+    content new_changeset
+    put :update, :id => changeset.id
+    assert_response :conflict
+  end
+
+  ##
+  # check that a changeset can contain a certain max number of changes.
+  ## FIXME should be changed to an integration test due to the with_controller
+  def test_changeset_limits
+    basic_authorization users(:public_user).email, "test"
+
+    # open a new changeset
+    content "<osm><changeset/></osm>"
+    put :create
+    assert_response :success, "can't create a new changeset"
+    cs_id = @response.body.to_i
+
+    # start the counter just short of where the changeset should finish.
+    offset = 10
+    # alter the database to set the counter on the changeset directly, 
+    # otherwise it takes about 6 minutes to fill all of them.
+    changeset = Changeset.find(cs_id)
+    changeset.num_changes = Changeset::MAX_ELEMENTS - offset
+    changeset.save!
+
+    with_controller(NodeController.new) do
+      # create a new node
+      content "<osm><node changeset='#{cs_id}' lat='0.0' lon='0.0'/></osm>"
+      put :create
+      assert_response :success, "can't create a new node"
+      node_id = @response.body.to_i
+
+      get :read, :id => node_id
+      assert_response :success, "can't read back new node"
+      node_doc = XML::Parser.string(@response.body).parse
+      node_xml = node_doc.find("//osm/node").first
+
+      # loop until we fill the changeset with nodes
+      offset.times do |i|
+        node_xml['lat'] = rand.to_s
+        node_xml['lon'] = rand.to_s
+        node_xml['version'] = (i+1).to_s
+
+        content node_doc
+        put :update, :id => node_id
+        assert_response :success, "attempt #{i} should have succeeded"
+      end
+
+      # trying again should fail
+      node_xml['lat'] = rand.to_s
+      node_xml['lon'] = rand.to_s
+      node_xml['version'] = offset.to_s
+      
+      content node_doc
+      put :update, :id => node_id
+      assert_response :conflict, "final attempt should have failed"
+    end
+
+    changeset = Changeset.find(cs_id)
+    assert_equal Changeset::MAX_ELEMENTS + 1, changeset.num_changes
+
+    # check that the changeset is now closed as well
+    assert(!changeset.is_open?, 
+           "changeset should have been auto-closed by exceeding " + 
+           "element limit.")
+  end
+  
+  ##
+  # This should display the last 20 changesets closed.
+  def test_list
+    changesets = Changeset.find(:all, :order => "created_at DESC", :conditions => ['num_changes > 0'], :limit=> 20)
+    assert changesets.size <= 20
+    get :list, {:format => "html"}
+    assert_response :success
+    assert_template "list"
+    # Now check that all 20 (or however many were returned) changesets are in the html
+    assert_select "h1", :text => "Changesets", :count => 1
+    assert_select "div[id='changeset_list'] ul", :count => changesets.size
+    changesets.each do |changeset|
+      # FIXME this test needs rewriting - test for table contents
+    end
+  end
+  
+  ##
+  # Checks the display of the user changesets listing
+  def test_list_user
+    user = users(:public_user)
+    get :list, {:format => "html", :display_name => user.display_name}
+    assert_response :success
+    assert_template "changeset/_user"
+    ## FIXME need to add more checks to see which if edits are actually shown if your data is public
+  end
+  
+  ##
+  # Check the not found of the list user changesets
+  def test_list_user_not_found
+    get :list, {:format => "html", :display_name => "Some random user"}
+    assert_response :not_found
+    assert_template 'user/no_such_user'
+  end
+      
+  ##
+  # This should display the last 20 changesets closed.
+  def test_feed
+    changesets = Changeset.find(:all, :order => "created_at DESC", :conditions => ['num_changes > 0'], :limit=> 20)
+    assert changesets.size <= 20
+    get :feed, {:format => "atom"}
+    assert_response :success
+    assert_template "list"
+    # Now check that all 20 (or however many were returned) changesets are in the html
+    assert_select "feed", :count => 1
+    assert_select "entry", :count => changesets.size
+    changesets.each do |changeset|
+      # FIXME this test needs rewriting - test for feed contents
+    end
+  end
+
+  ##
+  # Checks the display of the user changesets feed
+  def test_feed_user
+    user = users(:public_user)
+    get :feed, {:format => "atom", :display_name => user.display_name}
+    assert_response :success
+    assert_template "changeset/_user"
+    ## FIXME need to add more checks to see which if edits are actually shown if your data is public
+  end
+
+  ##
+  # Check the not found of the user changesets feed
+  def test_feed_user_not_found
+    get :feed, {:format => "atom", :display_name => "Some random user"}
+    assert_response :not_found
+  end
+  
+  ##
+  # check that the changeset download for a changeset with a redacted
+  # element in it doesn't contain that element.
+  def test_diff_download_redacted
+    changeset_id = changesets(:public_user_first_change).id
+
+    get :download, :id => changeset_id
+    assert_response :success
+
+    assert_select "osmChange", 1
+    # this changeset contains node 17 in versions 1 & 2, but 1 should
+    # be hidden.
+    assert_select "osmChange node[id=17]", 1
+    assert_select "osmChange node[id=17][version=1]", 0
+  end

 
   #------------------------------------------------------------
   # utility functions
   #------------------------------------------------------------
 
 
   #------------------------------------------------------------
   # utility functions
   #------------------------------------------------------------
 

+  ##
+  # boilerplate for checking that certain changesets exist in the
+  # output.
+  def assert_changesets(ids)
+    assert_select "osm>changeset", ids.size
+    ids.each do |id|
+      assert_select "osm>changeset[id=#{id}]", 1
+    end
+  end
+

   ##
   # call the include method and assert properties of the bbox
   def check_after_include(changeset_id, lon, lat, bbox)
     content "<osm><node lon='#{lon}' lat='#{lat}'/></osm>"
   ##
   # call the include method and assert properties of the bbox
   def check_after_include(changeset_id, lon, lat, bbox)
     content "<osm><node lon='#{lon}' lat='#{lat}'/></osm>"

-    post :include, :id => changeset_id
+    post :expand_bbox, :id => changeset_id

     assert_response :success, "Setting include of changeset failed: #{@response.body}"
 
     # check exactly one changeset
     assert_response :success, "Setting include of changeset failed: #{@response.body}"
 
     # check exactly one changeset