Merge remote-tracking branch 'upstream/pull/4251'

[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 b4bc4a5abd21345126dd08b75fe88381dfd940fc..c8fed5cbcfeff39140c28173f94e9c0068a7fac1 100644 (file)
--- a/test/controllers/api/changesets_controller_test.rb
+++ b/test/controllers/api/changesets_controller_test.rb
@@ -134,12 +134,14 @@ module Api
 
     def test_create_wrong_method
       auth_header = basic_authorization_header create(:user).email, "test"
 
     def test_create_wrong_method
       auth_header = basic_authorization_header create(:user).email, "test"

-      assert_raise ActionController::RoutingError do
-        get changeset_create_path, :headers => auth_header
-      end
-      assert_raise ActionController::RoutingError do
-        post changeset_create_path, :headers => auth_header
-      end
+
+      get changeset_create_path, :headers => auth_header
+      assert_response :not_found
+      assert_template "rescues/routing_error"
+
+      post changeset_create_path, :headers => auth_header
+      assert_response :not_found
+      assert_template "rescues/routing_error"

     end
 
     ##
     end
 
     ##


@@ -152,23 +154,20 @@ module Api
       assert_response :success, "cannot get first changeset"
 
       assert_select "osm[version='#{Settings.api_version}'][generator='#{Settings.generator}']", 1
       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>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
       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)
 
       changeset = create(:changeset, :closed)
       comment1, comment2, comment3 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 


@@ -176,15 +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_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", 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)>@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)>@id", comment3.id.to_s

+      assert_select "osm>changeset>discussion>comment:nth-child(3)>@visible", "true"

     end
 
     def test_show_json
     end
 
     def test_show_json


@@ -198,10 +244,7 @@ module Api
 
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
 
       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"]
       assert_nil js["changeset"]["tags"]
       assert_nil js["changeset"]["comments"]
       assert_equal changeset.user.id, js["changeset"]["uid"]


@@ -214,17 +257,17 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
       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
       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)
 
       changeset = create(:changeset, :closed)
       comment0, comment1, comment2 = create_list(:changeset_comment, 3, :changeset_id => changeset.id)
 


@@ -235,14 +278,67 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
       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_equal 3, js["changeset"]["comments"].count
       assert_equal comment0.id, js["changeset"]["comments"][0]["id"]

+      assert_operator true, :==, js["changeset"]["comments"][0]["visible"]

       assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
       assert_equal comment1.id, js["changeset"]["comments"][1]["id"]

+      assert_operator true, :==, js["changeset"]["comments"][1]["visible"]

       assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
       assert_equal comment2.id, js["changeset"]["comments"][2]["id"]

+      assert_operator true, :==, 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_operator true, :==, js["changeset"]["comments"][0]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][1]["id"]
+      assert_operator true, :==, 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_operator true, :==, 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_operator true, :==, 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_operator true, :==, js["changeset"]["comments"][0]["visible"]
+      assert_equal comment1.id, js["changeset"]["comments"][1]["id"]
+      assert_operator false, :==, js["changeset"]["comments"][1]["visible"]
+      assert_equal comment2.id, js["changeset"]["comments"][2]["id"]
+      assert_operator true, :==, js["changeset"]["comments"][2]["visible"]

     end
 
     def test_show_tag_and_discussion_json
     end
 
     def test_show_tag_and_discussion_json


@@ -270,10 +366,7 @@ module Api
       assert_not_nil js
       assert_equal Settings.api_version, js["version"]
       assert_equal Settings.generator, js["generator"]
       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"]
       assert_equal 2, js["changeset"]["tags"].count
       assert_equal 3, js["changeset"]["comments"].count
       assert_equal 3, js["changeset"]["comments_count"]


@@ -361,13 +454,13 @@ module Api
 
       auth_header = basic_authorization_header user.email, "test"
 
 
       auth_header = basic_authorization_header user.email, "test"
 

-      assert_raise ActionController::RoutingError do
-        get changeset_close_path(changeset), :headers => auth_header
-      end
+      get changeset_close_path(changeset), :headers => auth_header
+      assert_response :not_found
+      assert_template "rescues/routing_error"

 
 

-      assert_raise ActionController::RoutingError do
-        post changeset_close_path(changeset), :headers => auth_header
-      end
+      post changeset_close_path(changeset), :headers => auth_header
+      assert_response :not_found
+      assert_template "rescues/routing_error"

     end
 
     ##
     end
 
     ##


@@ -1604,6 +1697,107 @@ module Api
       assert_equal "Precondition failed: Node #{node.id} is still used by ways #{way.id}.", @response.body
     end
 
       assert_equal "Precondition failed: Node #{node.id} is still used by ways #{way.id}.", @response.body
     end
 

+    ##
+    # test initial rate limit
+    def test_upload_initial_rate_limit
+      # create a user
+      user = create(:user)
+
+      # create some objects to use
+      node = create(:node)
+      way = create(:way_with_nodes, :nodes_count => 2)
+      relation = create(:relation)
+
+      # create a changeset that puts us near the initial rate limit
+      changeset = create(:changeset, :user => user,
+                                     :created_at => Time.now.utc - 5.minutes,
+                                     :num_changes => Settings.initial_changes_per_hour - 2)
+
+      # 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='0' lat='0' changeset='#{changeset.id}'>
+           <tag k='foo' v='bar'/>
+           <tag k='baz' v='bat'/>
+          </node>
+          <way id='-1' changeset='#{changeset.id}'>
+           <nd ref='#{node.id}'/>
+          </way>
+         </create>
+         <create>
+          <relation id='-1' changeset='#{changeset.id}'>
+           <member type='way' role='some' ref='#{way.id}'/>
+           <member type='node' role='some' ref='#{node.id}'/>
+           <member type='relation' role='some' ref='#{relation.id}'/>
+          </relation>
+         </create>
+        </osmChange>
+      CHANGESET
+
+      # upload it
+      post changeset_upload_path(changeset), :params => diff, :headers => auth_header
+      assert_response :too_many_requests, "upload did not hit rate limit"
+    end
+
+    ##
+    # test maximum rate limit
+    def test_upload_maximum_rate_limit
+      # create a user
+      user = create(:user)
+
+      # create some objects to use
+      node = create(:node)
+      way = create(:way_with_nodes, :nodes_count => 2)
+      relation = create(:relation)
+
+      # create a changeset to establish our initial edit time
+      changeset = create(:changeset, :user => user,
+                                     :created_at => Time.now.utc - 28.days)
+
+      # create changeset to put us near the maximum rate limit
+      total_changes = Settings.max_changes_per_hour - 2
+      while total_changes.positive?
+        changes = [total_changes, Changeset::MAX_ELEMENTS].min
+        changeset = create(:changeset, :user => user,
+                                       :created_at => Time.now.utc - 5.minutes,
+                                       :num_changes => changes)
+        total_changes -= changes
+      end
+
+      # 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='0' lat='0' changeset='#{changeset.id}'>
+           <tag k='foo' v='bar'/>
+           <tag k='baz' v='bat'/>
+          </node>
+          <way id='-1' changeset='#{changeset.id}'>
+           <nd ref='#{node.id}'/>
+          </way>
+         </create>
+         <create>
+          <relation id='-1' changeset='#{changeset.id}'>
+           <member type='way' role='some' ref='#{way.id}'/>
+           <member type='node' role='some' ref='#{node.id}'/>
+           <member type='relation' role='some' ref='#{relation.id}'/>
+          </relation>
+         </create>
+        </osmChange>
+      CHANGESET
+
+      # upload it
+      post changeset_upload_path(changeset), :params => diff, :headers => auth_header
+      assert_response :too_many_requests, "upload did not hit rate limit"
+    end
+

     ##
     # when we make some simple changes we get the same changes back from the
     # diff download.
     ##
     # when we make some simple changes we get the same changes back from the
     # diff download.


@@ -2181,7 +2375,11 @@ module Api
     # 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
     # 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

-      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)

 
       # open a new changeset
       xml = "<osm><changeset/></osm>"
 
       # open a new changeset
       xml = "<osm><changeset/></osm>"


@@ -2263,14 +2461,14 @@ module Api
       changeset = create(:changeset, :closed)
 
       assert_difference "changeset.subscribers.count", 1 do
       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
       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
       end
       assert_response :success
     end


@@ -2283,7 +2481,7 @@ module Api
       # unauthorized
       changeset = create(:changeset, :closed)
       assert_no_difference "changeset.subscribers.count" do
       # 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
 
       end
       assert_response :unauthorized
 


@@ -2291,7 +2489,7 @@ module Api
 
       # bad changeset id
       assert_no_difference "changeset.subscribers.count" do
 
       # 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
 
       end
       assert_response :not_found
 


@@ -2299,7 +2497,7 @@ module Api
       changeset = create(:changeset, :closed)
       changeset.subscribers.push(user)
       assert_no_difference "changeset.subscribers.count" do
       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
       end
       assert_response :conflict
     end


@@ -2313,7 +2511,7 @@ module Api
       changeset.subscribers.push(user)
 
       assert_difference "changeset.subscribers.count", -1 do
       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
       assert_response :success
 


@@ -2322,7 +2520,7 @@ module Api
       changeset.subscribers.push(user)
 
       assert_difference "changeset.subscribers.count", -1 do
       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
       end
       assert_response :success
     end


@@ -2333,7 +2531,7 @@ module Api
       # unauthorized
       changeset = create(:changeset, :closed)
       assert_no_difference "changeset.subscribers.count" do
       # 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
 
       end
       assert_response :unauthorized
 


@@ -2341,20 +2539,47 @@ module Api
 
       # bad changeset id
       assert_no_difference "changeset.subscribers.count" do
 
       # 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
       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
 
       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_operator true, :==, js["changeset"]["open"]
+        assert_nil js["changeset"]["closed_at"]
+      else
+        assert_operator false, :==, 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)
     ##
     # check that certain changesets exist in the output
     def assert_changesets(changesets)