X-Git-Url: https://git.openstreetmap.org./rails.git/blobdiff_plain/85b17a1f2a69784fc85fb0101fd339cdcfdad105..39963d8c70b6d810ebc396997651a895d1f75344:/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 433984414..be1033ea6 100644
--- 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
 
@@ -134,12 +134,14 @@ module Api
 
     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
 
     ##
@@ -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_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)
 
@@ -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_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
@@ -198,10 +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 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"]
@@ -214,17 +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 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)
 
@@ -235,14 +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
@@ -270,10 +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"]
@@ -361,13 +454,13 @@ module Api
 
       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
 
     ##
@@ -697,10 +790,10 @@ module Api
 
       # check that the changeset bbox is within bounds
       cs = Changeset.find(changeset_id)
-      assert cs.min_lon >= -180 * GeoRecord::SCALE, "Minimum longitude (#{cs.min_lon / GeoRecord::SCALE}) should be >= -180 to be valid."
-      assert cs.max_lon <= 180 * GeoRecord::SCALE, "Maximum longitude (#{cs.max_lon / GeoRecord::SCALE}) should be <= 180 to be valid."
-      assert cs.min_lat >= -90 * GeoRecord::SCALE, "Minimum latitude (#{cs.min_lat / GeoRecord::SCALE}) should be >= -90 to be valid."
-      assert cs.max_lat <= 90 * GeoRecord::SCALE, "Maximum latitude (#{cs.max_lat / GeoRecord::SCALE}) should be <= 90 to be valid."
+      assert_operator cs.min_lon, :>=, -180 * GeoRecord::SCALE, "Minimum longitude (#{cs.min_lon / GeoRecord::SCALE}) should be >= -180 to be valid."
+      assert_operator cs.max_lon, :<=, 180 * GeoRecord::SCALE, "Maximum longitude (#{cs.max_lon / GeoRecord::SCALE}) should be <= 180 to be valid."
+      assert_operator cs.min_lat, :>=, -90 * GeoRecord::SCALE, "Minimum latitude (#{cs.min_lat / GeoRecord::SCALE}) should be >= -90 to be valid."
+      assert_operator cs.max_lat, :<=, 90 * GeoRecord::SCALE, "Maximum latitude (#{cs.max_lat / GeoRecord::SCALE}) should be <= 90 to be valid."
     end
 
     ##
@@ -1604,6 +1697,107 @@ module Api
       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.
@@ -1801,6 +1995,40 @@ 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
@@ -2181,7 +2409,11 @@ 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
-      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>"
@@ -2204,7 +2436,7 @@ 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
@@ -2215,7 +2447,7 @@ 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
 
@@ -2224,7 +2456,7 @@ 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
 
@@ -2263,14 +2495,14 @@ 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
@@ -2283,7 +2515,7 @@ 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
 
@@ -2291,7 +2523,7 @@ 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
 
@@ -2299,7 +2531,7 @@ 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
@@ -2313,7 +2545,7 @@ 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
 
@@ -2322,7 +2554,7 @@ 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
@@ -2333,7 +2565,7 @@ 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
 
@@ -2341,20 +2573,47 @@ 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)