Merge pull request #4887 from AntonKhorev/full-encode-wikipedia-value

[rails.git] / test / controllers / api / changesets_controller_test.rb

diff --git a/test/controllers/api/changesets_controller_test.rb b/test/controllers/api/changesets_controller_test.rb
index 8efa37d875aeeaf727a3cc61ed3892d99a0e1116..17a9ad9d35ec901c289c6684ca2f94a839a33445 100644 (file)
--- a/test/controllers/api/changesets_controller_test.rb
+++ b/test/controllers/api/changesets_controller_test.rb
@@ -51,11 +51,11 @@ module Api
       )
       assert_routing(
         { :path => "/api/0.6/changesets", :method => :get },
-        { :controller => "api/changesets", :action => "query" }
+        { :controller => "api/changesets", :action => "index" }
       )
       assert_routing(
         { :path => "/api/0.6/changesets.json", :method => :get },
-        { :controller => "api/changesets", :action => "query", :format => "json" }
+        { :controller => "api/changesets", :action => "index", :format => "json" }
       )
     end
 
@@ -154,23 +154,20 @@ module Api
       assert_response :success, "cannot get first changeset"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "true"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", 0
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 0
 
       get changeset_show_path(changeset), :params => { :include_discussion => true }
       assert_response :success, "cannot get first changeset with comments"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "true"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", 0
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 1
       assert_select "osm>changeset>discussion>comment", 0
+    end
 
+    def test_show_comments
+      # all comments visible
       changeset = create(:changeset, :closed)
       comment1, comment2, comment3 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 
@@ -178,15 +175,62 @@ module Api
       assert_response :success, "cannot get closed changeset with comments"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
-      assert_select "osm>changeset[id='#{changeset.id}']", 1
-      assert_select "osm>changeset>@open", "false"
-      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
-      assert_select "osm>changeset>@closed_at", changeset.closed_at.xmlschema
+      assert_single_changeset changeset
       assert_select "osm>changeset>discussion", 1
       assert_select "osm>changeset>discussion>comment", 3
       assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
       assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment2.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
       assert_select "osm>changeset>discussion>comment:nth-child(3)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@visible", "true"
+
+      # one hidden comment not included because not asked for
+      comment2.update(:visible => false)
+
+      get changeset_show_path(changeset), :params => { :include_discussion => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 2
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
+
+      # one hidden comment not included because no permissions
+      get changeset_show_path(changeset), :params => { :include_discussion => true, :show_hidden_comments => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 2
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      # maybe will show an empty comment element with visible=false in the future
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "true"
+
+      # one hidden comment shown to moderators
+      moderator_user = create(:moderator_user)
+      auth_header = basic_authorization_header moderator_user.email, "test"
+      get changeset_show_path(changeset), :params => { :include_discussion => true, :show_hidden_comments => true },
+                                          :headers => auth_header
+      assert_response :success, "cannot get closed changeset with comments"
+
+      assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
+      assert_single_changeset changeset
+      assert_select "osm>changeset>discussion", 1
+      assert_select "osm>changeset>discussion>comment", 3
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@id", comment1.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(1)>@visible", "true"
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@id", comment2.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(2)>@visible", "false"
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@id", comment3.id.to_s
+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@visible", "true"
     end
 
     def test_show_json
@@ -200,10 +244,7 @@ module Api
 
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_operator js["changeset"], :[], "open"
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_nil js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_nil js["changeset"]["tags"]
       assert_nil js["changeset"]["comments"]
       assert_equal changeset.user.id, js["changeset"]["uid"]
@@ -216,17 +257,17 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_operator js["changeset"], :[], "open"
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_nil js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_nil js["changeset"]["tags"]
       assert_nil js["changeset"]["min_lat"]
       assert_nil js["changeset"]["min_lon"]
       assert_nil js["changeset"]["max_lat"]
       assert_nil js["changeset"]["max_lon"]
       assert_equal 0, js["changeset"]["comments"].count
+    end
 
+    def test_show_comments_json
+      # all comments visible
       changeset = create(:changeset, :closed)
       comment0, comment1, comment2 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 
@@ -237,14 +278,67 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_not js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
+      assert_equal 3, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
+      assert js["changeset"]["comments"][2]["visible"]
+
+      # one hidden comment not included because not asked for
+      comment1.update(:visible => false)
+
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
+      assert_equal 2, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+
+      # one hidden comment not included because no permissions
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true, :show_hidden_comments => true }
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
+      assert_equal 2, js["changeset"]["comments"].count
+      assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
+      # maybe will show an empty comment element with visible=false in the future
+      assert_equal comment2.id, js["changeset"]["comments"][1]["id"]
+      assert js["changeset"]["comments"][1]["visible"]
+
+      # one hidden comment shown to moderators
+      moderator_user = create(:moderator_user)
+      auth_header = basic_authorization_header moderator_user.email, "test"
+      get changeset_show_path(changeset), :params => { :format => "json", :include_discussion => true, :show_hidden_comments => true },
+                                          :headers => auth_header
+      assert_response :success, "cannot get closed changeset with comments"
+
+      js = ActiveSupport::JSON.decode(@response.body)
+      assert_not_nil js
+      assert_equal Settings.api_version, js["version"]
+      assert_equal Settings.generator, js["generator"]
+      assert_single_changeset_json changeset, js
       assert_equal 3, js["changeset"]["comments"].count
       assert_equal comment0.id, js["changeset"]["comments"][0]["id"]
+      assert js["changeset"]["comments"][0]["visible"]
       assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
+      assert_not js["changeset"]["comments"][1]["visible"]
       assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
+      assert js["changeset"]["comments"][2]["visible"]
     end
 
     def test_show_tag_and_discussion_json
@@ -272,10 +366,7 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
-      assert_equal changeset.id, js["changeset"]["id"]
-      assert_not js["changeset"]["open"]
-      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
-      assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      assert_single_changeset_json changeset, js
       assert_equal 2, js["changeset"]["tags"].count
       assert_equal 3, js["changeset"]["comments"].count
       assert_equal 3, js["changeset"]["comments_count"]
@@ -658,7 +749,11 @@ module Api
     end
 
     def test_upload_large_changeset
-      auth_header = basic_authorization_header create(:user).email, "test"
+      user = create(:user)
+      auth_header = basic_authorization_header user.email, "test"
+
+      # create an old changeset to ensure we have the maximum rate limit
+      create(:changeset, :user => user, :created_at => Time.now.utc - 28.days)
 
       # create a changeset
       put changeset_create_path, :params => "<osm><changeset/></osm>", :headers => auth_header
@@ -957,14 +1052,14 @@ module Api
       diff = <<~CHANGESET
         <osmChange>
          <modify>
-          <node id='#{node.id}' lon='0' lat='0' changeset='#{changeset.id}' version='1'/>
-          <node id='#{node.id}' lon='1' lat='0' changeset='#{changeset.id}' version='2'/>
-          <node id='#{node.id}' lon='1' lat='1' changeset='#{changeset.id}' version='3'/>
-          <node id='#{node.id}' lon='1' lat='2' changeset='#{changeset.id}' version='4'/>
-          <node id='#{node.id}' lon='2' lat='2' changeset='#{changeset.id}' version='5'/>
-          <node id='#{node.id}' lon='3' lat='2' changeset='#{changeset.id}' version='6'/>
-          <node id='#{node.id}' lon='3' lat='3' changeset='#{changeset.id}' version='7'/>
-          <node id='#{node.id}' lon='9' lat='9' changeset='#{changeset.id}' version='8'/>
+          <node id='#{node.id}' lon='0.0' lat='0.0' changeset='#{changeset.id}' version='1'/>
+          <node id='#{node.id}' lon='0.1' lat='0.0' changeset='#{changeset.id}' version='2'/>
+          <node id='#{node.id}' lon='0.1' lat='0.1' changeset='#{changeset.id}' version='3'/>
+          <node id='#{node.id}' lon='0.1' lat='0.2' changeset='#{changeset.id}' version='4'/>
+          <node id='#{node.id}' lon='0.2' lat='0.2' changeset='#{changeset.id}' version='5'/>
+          <node id='#{node.id}' lon='0.3' lat='0.2' changeset='#{changeset.id}' version='6'/>
+          <node id='#{node.id}' lon='0.3' lat='0.3' changeset='#{changeset.id}' version='7'/>
+          <node id='#{node.id}' lon='0.9' lat='0.9' changeset='#{changeset.id}' version='8'/>
          </modify>
         </osmChange>
       CHANGESET
@@ -1238,9 +1333,9 @@ module Api
       diff = <<~CHANGESET
         <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"/>
+          <node id="-1" lon="0.0" lat="0.0" changeset="#{changeset.id}" version="1"/>
+          <node id="-2" lon="0.1" lat="0.1" changeset="#{changeset.id}" version="1"/>
+          <node id="-3" lon="0.2" lat="0.2" changeset="#{changeset.id}" version="1"/>
           <way id="-1" changeset="#{changeset.id}" version="1">
            <nd ref="-1"/>
            <nd ref="-2"/>
@@ -1261,9 +1356,9 @@ module Api
       diff = <<~CHANGESET
         <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"/>
+          <node id="-1" lon="0.0" lat="0.0" changeset="#{changeset.id}" version="1"/>
+          <node id="-2" lon="0.1" lat="0.1" changeset="#{changeset.id}" version="1"/>
+          <node id="-3" lon="0.2" lat="0.2" changeset="#{changeset.id}" version="1"/>
           <way id="#{way.id}" changeset="#{changeset.id}" version="1">
            <nd ref="-1"/>
            <nd ref="-2"/>
@@ -1293,9 +1388,9 @@ module Api
       diff = <<~CHANGESET
         <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"/>
+          <node id="-1" lon="0.0" lat="0.0" changeset="#{changeset.id}" version="1"/>
+          <node id="-2" lon="0.1" lat="0.1" changeset="#{changeset.id}" version="1"/>
+          <node id="-3" lon="0.2" lat="0.2" 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"/>
@@ -1316,9 +1411,9 @@ module Api
       diff = <<~CHANGESET
         <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"/>
+          <node id="-1" lon="0.0" lat="0.0" changeset="#{changeset.id}" version="1"/>
+          <node id="-2" lon="0.1" lat="0.1" changeset="#{changeset.id}" version="1"/>
+          <node id="-3" lon="0.2" lat="0.2" changeset="#{changeset.id}" version="1"/>
           <relation id="#{relation.id}" changeset="#{changeset.id}" version="1">
            <member type="node" role="foo" ref="-1"/>
            <member type="node" role="foo" ref="-2"/>
@@ -1387,14 +1482,14 @@ module Api
       changeset_id = @response.body.to_i
 
       old_way = create(:way)
-      create(:way_node, :way => old_way, :node => create(:node, :lat => 1, :lon => 1))
+      create(:way_node, :way => old_way, :node => create(:node, :lat => 0.1, :lon => 0.1))
 
       diff = XML::Document.new
       diff.root = XML::Node.new "osmChange"
       modify = XML::Node.new "modify"
       xml_old_way = xml_node_for_way(old_way)
       nd_ref = XML::Node.new "nd"
-      nd_ref["ref"] = create(:node, :lat => 3, :lon => 3).id.to_s
+      nd_ref["ref"] = create(:node, :lat => 0.3, :lon => 0.3).id.to_s
       xml_old_way << nd_ref
       xml_old_way["changeset"] = changeset_id.to_s
       modify << xml_old_way
@@ -1407,10 +1502,10 @@ module Api
 
       # check the bbox
       changeset = Changeset.find(changeset_id)
-      assert_equal 1 * GeoRecord::SCALE, changeset.min_lon, "min_lon should be 1 degree"
-      assert_equal 3 * GeoRecord::SCALE, changeset.max_lon, "max_lon should be 3 degrees"
-      assert_equal 1 * GeoRecord::SCALE, changeset.min_lat, "min_lat should be 1 degree"
-      assert_equal 3 * GeoRecord::SCALE, changeset.max_lat, "max_lat should be 3 degrees"
+      assert_equal 0.1 * GeoRecord::SCALE, changeset.min_lon, "min_lon should be 0.1 degree"
+      assert_equal 0.3 * GeoRecord::SCALE, changeset.max_lon, "max_lon should be 0.3 degrees"
+      assert_equal 0.1 * GeoRecord::SCALE, changeset.min_lat, "min_lat should be 0.1 degree"
+      assert_equal 0.3 * GeoRecord::SCALE, changeset.max_lat, "max_lat should be 0.3 degrees"
     end
 
     ##
@@ -1707,6 +1802,71 @@ module Api
       assert_response :too_many_requests, "upload did not hit rate limit"
     end
 
+    ##
+    # test initial size limit
+    def test_upload_initial_size_limit
+      # create a user
+      user = create(:user)
+
+      # create a changeset that puts us near the initial size limit
+      changeset = create(:changeset, :user => user,
+                                     :min_lat => (-0.5 * GeoRecord::SCALE).round, :min_lon => (0.5 * GeoRecord::SCALE).round,
+                                     :max_lat => (0.5 * GeoRecord::SCALE).round, :max_lon => (2.5 * GeoRecord::SCALE).round)
+
+      # create authentication header
+      auth_header = basic_authorization_header user.email, "test"
+
+      # simple diff to create a node
+      diff = <<~CHANGESET
+        <osmChange>
+         <create>
+          <node id='-1' lon='0.9' lat='2.9' changeset='#{changeset.id}'>
+           <tag k='foo' v='bar'/>
+           <tag k='baz' v='bat'/>
+          </node>
+         </create>
+        </osmChange>
+      CHANGESET
+
+      # upload it
+      post changeset_upload_path(changeset), :params => diff, :headers => auth_header
+      assert_response :payload_too_large, "upload did not hit size limit"
+    end
+
+    ##
+    # test size limit after one week
+    def test_upload_week_size_limit
+      # create a user
+      user = create(:user)
+
+      # create a changeset to establish our initial edit time
+      create(:changeset, :user => user, :created_at => Time.now.utc - 7.days)
+
+      # create a changeset that puts us near the initial size limit
+      changeset = create(:changeset, :user => user,
+                                     :min_lat => (-0.5 * GeoRecord::SCALE).round, :min_lon => (0.5 * GeoRecord::SCALE).round,
+                                     :max_lat => (0.5 * GeoRecord::SCALE).round, :max_lon => (2.5 * GeoRecord::SCALE).round)
+
+      # create authentication header
+      auth_header = basic_authorization_header user.email, "test"
+
+      # simple diff to create a node way and relation using placeholders
+      diff = <<~CHANGESET
+        <osmChange>
+         <create>
+          <node id='-1' lon='35' lat='35' changeset='#{changeset.id}'>
+           <tag k='foo' v='bar'/>
+           <tag k='baz' v='bat'/>
+          </node>
+         </create>
+        </osmChange>
+      CHANGESET
+
+      # upload it
+      post changeset_upload_path(changeset), :params => diff, :headers => auth_header
+      assert_response :payload_too_large, "upload did not hit size limit"
+    end
+
     ##
     # when we make some simple changes we get the same changes back from the
     # diff download.
@@ -1738,14 +1898,14 @@ module Api
       diff = <<~CHANGESET
         <osmChange>
          <modify>
-          <node id='#{node.id}' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
-          <node id='#{node.id}' lon='1' lat='0' changeset='#{changeset_id}' version='2'/>
-          <node id='#{node.id}' lon='1' lat='1' changeset='#{changeset_id}' version='3'/>
-          <node id='#{node.id}' lon='1' lat='2' changeset='#{changeset_id}' version='4'/>
-          <node id='#{node.id}' lon='2' lat='2' changeset='#{changeset_id}' version='5'/>
-          <node id='#{node.id}' lon='3' lat='2' changeset='#{changeset_id}' version='6'/>
-          <node id='#{node.id}' lon='3' lat='3' changeset='#{changeset_id}' version='7'/>
-          <node id='#{node.id}' lon='9' lat='9' changeset='#{changeset_id}' version='8'/>
+          <node id='#{node.id}' lon='0.0' lat='0.0' changeset='#{changeset_id}' version='1'/>
+          <node id='#{node.id}' lon='0.1' lat='0.0' changeset='#{changeset_id}' version='2'/>
+          <node id='#{node.id}' lon='0.1' lat='0.1' changeset='#{changeset_id}' version='3'/>
+          <node id='#{node.id}' lon='0.1' lat='0.2' changeset='#{changeset_id}' version='4'/>
+          <node id='#{node.id}' lon='0.2' lat='0.2' changeset='#{changeset_id}' version='5'/>
+          <node id='#{node.id}' lon='0.3' lat='0.2' changeset='#{changeset_id}' version='6'/>
+          <node id='#{node.id}' lon='0.3' lat='0.3' changeset='#{changeset_id}' version='7'/>
+          <node id='#{node.id}' lon='0.9' lat='0.9' changeset='#{changeset_id}' version='8'/>
          </modify>
         </osmChange>
       CHANGESET
@@ -1844,15 +2004,15 @@ module Api
       diff = <<~CHANGESET
         <osmChange>
          <delete>
-          <node id='#{node.id}' lon='0' lat='0' changeset='#{changeset_id}' version='1'/>
+          <node id='#{node.id}' lon='0.0' lat='0.0' 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'/>
-          <node id='-3' lon='7' lat='9' changeset='#{changeset_id}' version='0'/>
+          <node id='-1' lon='0.9' lat='0.9' changeset='#{changeset_id}' version='0'/>
+          <node id='-2' lon='0.8' lat='0.9' changeset='#{changeset_id}' version='0'/>
+          <node id='-3' lon='0.7' lat='0.9' changeset='#{changeset_id}' version='0'/>
          </create>
          <modify>
-          <node id='#{node2.id}' lon='20' lat='15' changeset='#{changeset_id}' version='1'/>
+          <node id='#{node2.id}' lon='2.0' lat='1.5' changeset='#{changeset_id}' version='1'/>
           <way id='#{way.id}' changeset='#{changeset_id}' version='1'>
            <nd ref='#{node2.id}'/>
            <nd ref='-1'/>
@@ -1904,12 +2064,46 @@ module Api
       end
     end
 
+    test "sorts downloaded elements by timestamp" do
+      changeset = create(:changeset)
+      node1 = create(:old_node, :version => 2, :timestamp => "2020-02-01", :changeset => changeset)
+      node0 = create(:old_node, :version => 2, :timestamp => "2020-01-01", :changeset => changeset)
+
+      get changeset_download_path(changeset)
+      assert_response :success
+      assert_dom "modify", :count => 2 do |modify|
+        assert_dom modify[0], ">node", :count => 1 do |node|
+          assert_dom node, ">@id", node0.node_id.to_s
+        end
+        assert_dom modify[1], ">node", :count => 1 do |node|
+          assert_dom node, ">@id", node1.node_id.to_s
+        end
+      end
+    end
+
+    test "sorts downloaded elements by version" do
+      changeset = create(:changeset)
+      node1 = create(:old_node, :version => 3, :timestamp => "2020-01-01", :changeset => changeset)
+      node0 = create(:old_node, :version => 2, :timestamp => "2020-01-01", :changeset => changeset)
+
+      get changeset_download_path(changeset)
+      assert_response :success
+      assert_dom "modify", :count => 2 do |modify|
+        assert_dom modify[0], ">node", :count => 1 do |node|
+          assert_dom node, ">@id", node0.node_id.to_s
+        end
+        assert_dom modify[1], ">node", :count => 1 do |node|
+          assert_dom node, ">@id", node1.node_id.to_s
+        end
+      end
+    end
+
     ##
     # 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
       way = create(:way)
-      create(:way_node, :way => way, :node => create(:node, :lat => 3, :lon => 3))
+      create(:way_node, :way => way, :node => create(:node, :lat => 0.3, :lon => 0.3))
 
       auth_header = basic_authorization_header create(:user).email, "test"
 
@@ -1921,7 +2115,7 @@ module Api
 
       # add a single node to it
       with_controller(NodesController.new) do
-        xml = "<osm><node lon='1' lat='2' changeset='#{changeset_id}'/></osm>"
+        xml = "<osm><node lon='0.1' lat='0.2' changeset='#{changeset_id}'/></osm>"
         put node_create_path, :params => xml, :headers => auth_header
         assert_response :success, "Couldn't create node."
       end
@@ -1929,14 +2123,14 @@ module Api
       # get the bounding box back from the changeset
       get changeset_show_path(:id => changeset_id)
       assert_response :success, "Couldn't read back changeset."
-      assert_select "osm>changeset[min_lon='1.0000000']", 1
-      assert_select "osm>changeset[max_lon='1.0000000']", 1
-      assert_select "osm>changeset[min_lat='2.0000000']", 1
-      assert_select "osm>changeset[max_lat='2.0000000']", 1
+      assert_select "osm>changeset[min_lon='0.1000000']", 1
+      assert_select "osm>changeset[max_lon='0.1000000']", 1
+      assert_select "osm>changeset[min_lat='0.2000000']", 1
+      assert_select "osm>changeset[max_lat='0.2000000']", 1
 
       # add another node to it
       with_controller(NodesController.new) do
-        xml = "<osm><node lon='2' lat='1' changeset='#{changeset_id}'/></osm>"
+        xml = "<osm><node lon='0.2' lat='0.1' changeset='#{changeset_id}'/></osm>"
         put node_create_path, :params => xml, :headers => auth_header
         assert_response :success, "Couldn't create second node."
       end
@@ -1944,10 +2138,10 @@ module Api
       # get the bounding box back from the changeset
       get changeset_show_path(:id => changeset_id)
       assert_response :success, "Couldn't read back changeset for the second time."
-      assert_select "osm>changeset[min_lon='1.0000000']", 1
-      assert_select "osm>changeset[max_lon='2.0000000']", 1
-      assert_select "osm>changeset[min_lat='1.0000000']", 1
-      assert_select "osm>changeset[max_lat='2.0000000']", 1
+      assert_select "osm>changeset[min_lon='0.1000000']", 1
+      assert_select "osm>changeset[max_lon='0.2000000']", 1
+      assert_select "osm>changeset[min_lat='0.1000000']", 1
+      assert_select "osm>changeset[max_lat='0.2000000']", 1
 
       # add (delete) a way to it, which contains a point at (3,3)
       with_controller(WaysController.new) do
@@ -1959,10 +2153,10 @@ module Api
       # get the bounding box back from the changeset
       get changeset_show_path(:id => changeset_id)
       assert_response :success, "Couldn't read back changeset for the third time."
-      assert_select "osm>changeset[min_lon='1.0000000']", 1
-      assert_select "osm>changeset[max_lon='3.0000000']", 1
-      assert_select "osm>changeset[min_lat='1.0000000']", 1
-      assert_select "osm>changeset[max_lat='3.0000000']", 1
+      assert_select "osm>changeset[min_lon='0.1000000']", 1
+      assert_select "osm>changeset[max_lon='0.3000000']", 1
+      assert_select "osm>changeset[min_lat='0.1000000']", 1
+      assert_select "osm>changeset[max_lat='0.3000000']", 1
     end
 
     ##
@@ -2311,7 +2505,7 @@ module Api
         assert_response :success, "can't create a new node"
         node_id = @response.body.to_i
 
-        get api_node_path(:id => node_id)
+        get api_node_path(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
@@ -2322,7 +2516,7 @@ module Api
           node_xml["lon"] = rand.to_s
           node_xml["version"] = (i + 1).to_s
 
-          put api_node_path(:id => node_id), :params => node_doc.to_s, :headers => auth_header
+          put api_node_path(node_id), :params => node_doc.to_s, :headers => auth_header
           assert_response :success, "attempt #{i} should have succeeded"
         end
 
@@ -2331,7 +2525,7 @@ module Api
         node_xml["lon"] = rand.to_s
         node_xml["version"] = offset.to_s
 
-        put api_node_path(:id => node_id), :params => node_doc.to_s, :headers => auth_header
+        put api_node_path(node_id), :params => node_doc.to_s, :headers => auth_header
         assert_response :conflict, "final attempt should have failed"
       end
 
@@ -2370,14 +2564,14 @@ module Api
       changeset = create(:changeset, :closed)
 
       assert_difference "changeset.subscribers.count", 1 do
-        post changeset_subscribe_path(changeset), :headers => auth_header
+        post api_changeset_subscribe_path(changeset), :headers => auth_header
       end
       assert_response :success
 
       # not closed changeset
       changeset = create(:changeset)
       assert_difference "changeset.subscribers.count", 1 do
-        post changeset_subscribe_path(changeset), :headers => auth_header
+        post api_changeset_subscribe_path(changeset), :headers => auth_header
       end
       assert_response :success
     end
@@ -2390,7 +2584,7 @@ module Api
       # unauthorized
       changeset = create(:changeset, :closed)
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_subscribe_path(changeset)
+        post api_changeset_subscribe_path(changeset)
       end
       assert_response :unauthorized
 
@@ -2398,7 +2592,7 @@ module Api
 
       # bad changeset id
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_subscribe_path(:id => 999111), :headers => auth_header
+        post api_changeset_subscribe_path(:id => 999111), :headers => auth_header
       end
       assert_response :not_found
 
@@ -2406,7 +2600,7 @@ module Api
       changeset = create(:changeset, :closed)
       changeset.subscribers.push(user)
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_subscribe_path(changeset), :headers => auth_header
+        post api_changeset_subscribe_path(changeset), :headers => auth_header
       end
       assert_response :conflict
     end
@@ -2420,7 +2614,7 @@ module Api
       changeset.subscribers.push(user)
 
       assert_difference "changeset.subscribers.count", -1 do
-        post changeset_unsubscribe_path(changeset), :headers => auth_header
+        post api_changeset_unsubscribe_path(changeset), :headers => auth_header
       end
       assert_response :success
 
@@ -2429,7 +2623,7 @@ module Api
       changeset.subscribers.push(user)
 
       assert_difference "changeset.subscribers.count", -1 do
-        post changeset_unsubscribe_path(changeset), :headers => auth_header
+        post api_changeset_unsubscribe_path(changeset), :headers => auth_header
       end
       assert_response :success
     end
@@ -2440,7 +2634,7 @@ module Api
       # unauthorized
       changeset = create(:changeset, :closed)
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_unsubscribe_path(changeset)
+        post api_changeset_unsubscribe_path(changeset)
       end
       assert_response :unauthorized
 
@@ -2448,20 +2642,47 @@ module Api
 
       # bad changeset id
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_unsubscribe_path(:id => 999111), :headers => auth_header
+        post api_changeset_unsubscribe_path(:id => 999111), :headers => auth_header
       end
       assert_response :not_found
 
       # trying to unsubscribe when not subscribed
       changeset = create(:changeset, :closed)
       assert_no_difference "changeset.subscribers.count" do
-        post changeset_unsubscribe_path(changeset), :headers => auth_header
+        post api_changeset_unsubscribe_path(changeset), :headers => auth_header
       end
       assert_response :not_found
     end
 
     private
 
+    ##
+    # check that the output consists of one specific changeset
+    def assert_single_changeset(changeset)
+      assert_select "osm>changeset", 1
+      assert_select "osm>changeset>@id", changeset.id.to_s
+      assert_select "osm>changeset>@created_at", changeset.created_at.xmlschema
+      if changeset.open?
+        assert_select "osm>changeset>@open", "true"
+        assert_select "osm>changeset>@closed_at", 0
+      else
+        assert_select "osm>changeset>@open", "false"
+        assert_select "osm>changeset>@closed_at", changeset.closed_at.xmlschema
+      end
+    end
+
+    def assert_single_changeset_json(changeset, js)
+      assert_equal changeset.id, js["changeset"]["id"]
+      assert_equal changeset.created_at.xmlschema, js["changeset"]["created_at"]
+      if changeset.open?
+        assert js["changeset"]["open"]
+        assert_nil js["changeset"]["closed_at"]
+      else
+        assert_not js["changeset"]["open"]
+        assert_equal changeset.closed_at.xmlschema, js["changeset"]["closed_at"]
+      end
+    end
+
     ##
     # check that certain changesets exist in the output
     def assert_changesets(changesets)