X-Git-Url: https://git.openstreetmap.org/rails.git/blobdiff_plain/72a7fc67cabd80452aeaeb6d8c05d61ca05eaef1..f22098f3b76d39e471b72659172f9e374549fa85:/test/controllers/relation_controller_test.rb

diff --git a/test/controllers/relation_controller_test.rb b/test/controllers/relation_controller_test.rb
index 66d601284..51cf2e6d0 100644
--- a/test/controllers/relation_controller_test.rb
+++ b/test/controllers/relation_controller_test.rb
@@ -1,5 +1,5 @@
-require 'test_helper'
-require 'relation_controller'
+require "test_helper"
+require "relation_controller"
 
 class RelationControllerTest < ActionController::TestCase
   api_fixtures
@@ -52,11 +52,11 @@ class RelationControllerTest < ActionController::TestCase
 
   def test_read
     # check that a visible relation is returned properly
-    get :read, :id => current_relations(:visible_relation).id
+    get :read, :id => create(:relation).id
     assert_response :success
 
     # check that an invisible relation is not returned
-    get :read, :id => current_relations(:invisible_relation).id
+    get :read, :id => create(:relation, :deleted).id
     assert_response :gone
 
     # check chat a non-existent relation is not returned
@@ -68,21 +68,65 @@ class RelationControllerTest < ActionController::TestCase
   # check that all relations containing a particular node, and no extra
   # relations, are returned from the relations_for_node call.
   def test_relations_for_node
-    check_relations_for_element(:relations_for_node, "node", 
-                                current_nodes(:node_used_by_relationship).id,
-                                [ :visible_relation, :used_relation ])
+    node = create(:node)
+    # should include relations with that node as a member
+    relation_with_node = create(:relation_member, :member => node).relation
+    # should ignore relations without that node as a member
+    _relation_without_node = create(:relation_member).relation
+    # should ignore relations with the node involved indirectly, via a way
+    way = create(:way_node, :node => node).way
+    _relation_with_way = create(:relation_member, :member => way).relation
+    # should ignore relations with the node involved indirectly, via a relation
+    second_relation = create(:relation_member, :member => node).relation
+    _super_relation = create(:relation_member, :member => second_relation).relation
+    # should combine multiple relation_member references into just one relation entry
+    create(:relation_member, :member => node, :relation => relation_with_node, :sequence_id => 2)
+    # should not include deleted relations
+    deleted_relation = create(:relation, :deleted)
+    create(:relation_member, :member => node, :relation => deleted_relation)
+
+    check_relations_for_element(:relations_for_node, "node",
+                                node.id,
+                                [relation_with_node, second_relation])
   end
 
   def test_relations_for_way
+    way = create(:way)
+    # should include relations with that way as a member
+    relation_with_way = create(:relation_member, :member => way).relation
+    # should ignore relations without that way as a member
+    _relation_without_way = create(:relation_member).relation
+    # should ignore relations with the way involved indirectly, via a relation
+    second_relation = create(:relation_member, :member => way).relation
+    _super_relation = create(:relation_member, :member => second_relation).relation
+    # should combine multiple relation_member references into just one relation entry
+    create(:relation_member, :member => way, :relation => relation_with_way, :sequence_id => 2)
+    # should not include deleted relations
+    deleted_relation = create(:relation, :deleted)
+    create(:relation_member, :member => way, :relation => deleted_relation)
+
     check_relations_for_element(:relations_for_way, "way",
-                                current_ways(:used_way).id,
-                                [ :visible_relation ])
+                                way.id,
+                                [relation_with_way, second_relation])
   end
 
   def test_relations_for_relation
+    relation = create(:relation)
+    # should include relations with that relation as a member
+    relation_with_relation = create(:relation_member, :member => relation).relation
+    # should ignore any relation without that relation as a member
+    _relation_without_relation = create(:relation_member).relation
+    # should ignore relations with the relation involved indirectly, via a relation
+    second_relation = create(:relation_member, :member => relation).relation
+    _super_relation = create(:relation_member, :member => second_relation).relation
+    # should combine multiple relation_member references into just one relation entry
+    create(:relation_member, :member => relation, :relation => relation_with_relation, :sequence_id => 2)
+    # should not include deleted relations
+    deleted_relation = create(:relation, :deleted)
+    create(:relation_member, :member => relation, :relation => deleted_relation)
     check_relations_for_element(:relations_for_relation, "relation",
-                                current_relations(:used_relation).id,
-                                [ :visible_relation ])
+                                relation.id,
+                                [relation_with_relation, second_relation])
   end
 
   def check_relations_for_element(method, type, id, expected_relations)
@@ -91,27 +135,30 @@ class RelationControllerTest < ActionController::TestCase
     assert_response :success
 
     # count one osm element
-    assert_select "osm[version=#{API_VERSION}][generator=\"OpenStreetMap server\"]", 1
+    assert_select "osm[version='#{API_VERSION}'][generator='OpenStreetMap server']", 1
 
     # we should have only the expected number of relations
     assert_select "osm>relation", expected_relations.size
 
-    # and each of them should contain the node we originally searched for
-    expected_relations.each do |r|
-      relation_id = current_relations(r).id
-      assert_select "osm>relation#?", relation_id
-      assert_select "osm>relation#?>member[type=\"#{type}\"][ref=#{id}]", relation_id
+    # and each of them should contain the element we originally searched for
+    expected_relations.each do |relation|
+      # The relation should appear once, but the element could appear multiple times
+      assert_select "osm>relation[id='#{relation.id}']", 1
+      assert_select "osm>relation[id='#{relation.id}']>member[type='#{type}'][ref='#{id}']"
     end
   end
 
   def test_full
     # check the "full" mode
-    get :full, :id => current_relations(:visible_relation).id
+    get :full, :id => 999999
+    assert_response :not_found
+
+    get :full, :id => create(:relation, :deleted).id
+    assert_response :gone
+
+    get :full, :id => create(:relation).id
     assert_response :success
-    # FIXME check whether this contains the stuff we want!
-    if $VERBOSE
-        print @response.body
-    end
+    # FIXME: check whether this contains the stuff we want!
   end
 
   ##
@@ -130,10 +177,10 @@ class RelationControllerTest < ActionController::TestCase
     assert_response :success
     assert_select "osm" do
       assert_select "relation", :count => 4
-      assert_select "relation[id=1][visible=true]", :count => 1
-      assert_select "relation[id=2][visible=false]", :count => 1
-      assert_select "relation[id=4][visible=true]", :count => 1
-      assert_select "relation[id=7][visible=true]", :count => 1
+      assert_select "relation[id='1'][visible='true']", :count => 1
+      assert_select "relation[id='2'][visible='false']", :count => 1
+      assert_select "relation[id='4'][visible='true']", :count => 1
+      assert_select "relation[id='7'][visible='true']", :count => 1
     end
 
     # check error when a non-existent relation is included
@@ -146,187 +193,173 @@ class RelationControllerTest < ActionController::TestCase
   # -------------------------------------
 
   def test_create
-    basic_authorization users(:normal_user).email, "test"
-    
-    # put the relation in a dummy fixture changset
-    changeset_id = changesets(:normal_user_first_change).id
+    private_user = create(:user, :data_public => false)
+    private_changeset = create(:changeset, :user => private_user)
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    node = create(:node)
+    way = create(:way_with_nodes, :nodes_count => 2)
+
+    basic_authorization private_user.email, "test"
 
     # create an relation without members
-    content "<osm><relation changeset='#{changeset_id}'><tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{private_changeset.id}'><tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for forbidden, due to user
-    assert_response :forbidden, 
-    "relation upload should have failed with forbidden"
+    assert_response :forbidden,
+                    "relation upload should have failed with forbidden"
 
     ###
     # create an relation with a node as member
     # This time try with a role attribute in the relation
-    nid = current_nodes(:used_node_1).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member  ref='#{nid}' type='node' role='some'/>" +
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{private_changeset.id}'>" +
+            "<member  ref='#{node.id}' type='node' role='some'/>" +
+            "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for forbidden due to user
-    assert_response :forbidden, 
-    "relation upload did not return forbidden status"
-    
+    assert_response :forbidden,
+                    "relation upload did not return forbidden status"
+
     ###
-    # create an relation with a node as member, this time test that we don't 
+    # create an relation with a node as member, this time test that we don't
     # need a role attribute to be included
-    nid = current_nodes(:used_node_1).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member  ref='#{nid}' type='node'/>"+
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{private_changeset.id}'>" +
+            "<member  ref='#{node.id}' type='node'/>" + "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for forbidden due to user
-    assert_response :forbidden, 
-    "relation upload did not return forbidden status"
+    assert_response :forbidden,
+                    "relation upload did not return forbidden status"
 
     ###
     # create an relation with a way and a node as members
-    nid = current_nodes(:used_node_1).id
-    wid = current_ways(:used_way).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member type='node' ref='#{nid}' role='some'/>" +
-      "<member type='way' ref='#{wid}' role='other'/>" +
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{private_changeset.id}'>" +
+            "<member type='node' ref='#{node.id}' role='some'/>" +
+            "<member type='way' ref='#{way.id}' role='other'/>" +
+            "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for forbidden, due to user
-    assert_response :forbidden, 
-        "relation upload did not return success status"
-
-
+    assert_response :forbidden,
+                    "relation upload did not return success status"
 
     ## Now try with the public user
-    basic_authorization users(:public_user).email, "test"
-    
-    # put the relation in a dummy fixture changset
-    changeset_id = changesets(:public_user_first_change).id
+    basic_authorization user.email, "test"
 
     # create an relation without members
-    content "<osm><relation changeset='#{changeset_id}'><tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'><tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for success
-    assert_response :success, 
-        "relation upload did not return success status"
+    assert_response :success,
+                    "relation upload did not return success status"
     # read id of created relation and search for it
     relationid = @response.body
     checkrelation = Relation.find(relationid)
-    assert_not_nil checkrelation, 
-        "uploaded relation not found in data base after upload"
+    assert_not_nil checkrelation,
+                   "uploaded relation not found in data base after upload"
     # compare values
-    assert_equal checkrelation.members.length, 0, 
-        "saved relation contains members but should not"
-    assert_equal checkrelation.tags.length, 1, 
-        "saved relation does not contain exactly one tag"
-    assert_equal changeset_id, checkrelation.changeset.id,
-        "saved relation does not belong in the changeset it was assigned to"
-    assert_equal users(:public_user).id, checkrelation.changeset.user_id, 
-        "saved relation does not belong to user that created it"
-    assert_equal true, checkrelation.visible, 
-        "saved relation is not visible"
+    assert_equal checkrelation.members.length, 0,
+                 "saved relation contains members but should not"
+    assert_equal checkrelation.tags.length, 1,
+                 "saved relation does not contain exactly one tag"
+    assert_equal changeset.id, checkrelation.changeset.id,
+                 "saved relation does not belong in the changeset it was assigned to"
+    assert_equal user.id, checkrelation.changeset.user_id,
+                 "saved relation does not belong to user that created it"
+    assert_equal true, checkrelation.visible,
+                 "saved relation is not visible"
     # ok the relation is there but can we also retrieve it?
     get :read, :id => relationid
     assert_response :success
 
-
     ###
     # create an relation with a node as member
     # This time try with a role attribute in the relation
-    nid = current_nodes(:used_node_1).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member  ref='#{nid}' type='node' role='some'/>" +
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'>" +
+            "<member  ref='#{node.id}' type='node' role='some'/>" +
+            "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for success
-    assert_response :success, 
-        "relation upload did not return success status"
+    assert_response :success,
+                    "relation upload did not return success status"
     # read id of created relation and search for it
     relationid = @response.body
     checkrelation = Relation.find(relationid)
-    assert_not_nil checkrelation, 
-        "uploaded relation not found in data base after upload"
+    assert_not_nil checkrelation,
+                   "uploaded relation not found in data base after upload"
     # compare values
-    assert_equal checkrelation.members.length, 1, 
-        "saved relation does not contain exactly one member"
-    assert_equal checkrelation.tags.length, 1, 
-        "saved relation does not contain exactly one tag"
-    assert_equal changeset_id, checkrelation.changeset.id,
-        "saved relation does not belong in the changeset it was assigned to"
-    assert_equal users(:public_user).id, checkrelation.changeset.user_id, 
-        "saved relation does not belong to user that created it"
-    assert_equal true, checkrelation.visible, 
-        "saved relation is not visible"
+    assert_equal checkrelation.members.length, 1,
+                 "saved relation does not contain exactly one member"
+    assert_equal checkrelation.tags.length, 1,
+                 "saved relation does not contain exactly one tag"
+    assert_equal changeset.id, checkrelation.changeset.id,
+                 "saved relation does not belong in the changeset it was assigned to"
+    assert_equal user.id, checkrelation.changeset.user_id,
+                 "saved relation does not belong to user that created it"
+    assert_equal true, checkrelation.visible,
+                 "saved relation is not visible"
     # ok the relation is there but can we also retrieve it?
-    
+
     get :read, :id => relationid
     assert_response :success
-    
-    
+
     ###
-    # create an relation with a node as member, this time test that we don't 
+    # create an relation with a node as member, this time test that we don't
     # need a role attribute to be included
-    nid = current_nodes(:used_node_1).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member  ref='#{nid}' type='node'/>"+
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'>" +
+            "<member  ref='#{node.id}' type='node'/>" + "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for success
-    assert_response :success, 
-        "relation upload did not return success status"
+    assert_response :success,
+                    "relation upload did not return success status"
     # read id of created relation and search for it
     relationid = @response.body
     checkrelation = Relation.find(relationid)
-    assert_not_nil checkrelation, 
-        "uploaded relation not found in data base after upload"
+    assert_not_nil checkrelation,
+                   "uploaded relation not found in data base after upload"
     # compare values
-    assert_equal checkrelation.members.length, 1, 
-        "saved relation does not contain exactly one member"
-    assert_equal checkrelation.tags.length, 1, 
-        "saved relation does not contain exactly one tag"
-    assert_equal changeset_id, checkrelation.changeset.id,
-        "saved relation does not belong in the changeset it was assigned to"
-    assert_equal users(:public_user).id, checkrelation.changeset.user_id, 
-        "saved relation does not belong to user that created it"
-    assert_equal true, checkrelation.visible, 
-        "saved relation is not visible"
+    assert_equal checkrelation.members.length, 1,
+                 "saved relation does not contain exactly one member"
+    assert_equal checkrelation.tags.length, 1,
+                 "saved relation does not contain exactly one tag"
+    assert_equal changeset.id, checkrelation.changeset.id,
+                 "saved relation does not belong in the changeset it was assigned to"
+    assert_equal user.id, checkrelation.changeset.user_id,
+                 "saved relation does not belong to user that created it"
+    assert_equal true, checkrelation.visible,
+                 "saved relation is not visible"
     # ok the relation is there but can we also retrieve it?
-    
+
     get :read, :id => relationid
     assert_response :success
 
     ###
     # create an relation with a way and a node as members
-    nid = current_nodes(:used_node_1).id
-    wid = current_ways(:used_way).id
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member type='node' ref='#{nid}' role='some'/>" +
-      "<member type='way' ref='#{wid}' role='other'/>" +
-      "<tag k='test' v='yes' /></relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'>" +
+            "<member type='node' ref='#{node.id}' role='some'/>" +
+            "<member type='way' ref='#{way.id}' role='other'/>" +
+            "<tag k='test' v='yes' /></relation></osm>"
     put :create
     # hope for success
-    assert_response :success, 
-        "relation upload did not return success status"
+    assert_response :success,
+                    "relation upload did not return success status"
     # read id of created relation and search for it
     relationid = @response.body
     checkrelation = Relation.find(relationid)
-    assert_not_nil checkrelation, 
-        "uploaded relation not found in data base after upload"
+    assert_not_nil checkrelation,
+                   "uploaded relation not found in data base after upload"
     # compare values
-    assert_equal checkrelation.members.length, 2, 
-        "saved relation does not have exactly two members"
-    assert_equal checkrelation.tags.length, 1, 
-        "saved relation does not contain exactly one tag"
-    assert_equal changeset_id, checkrelation.changeset.id,
-        "saved relation does not belong in the changeset it was assigned to"
-    assert_equal users(:public_user).id, checkrelation.changeset.user_id, 
-        "saved relation does not belong to user that created it"
-    assert_equal true, checkrelation.visible, 
-        "saved relation is not visible"
+    assert_equal checkrelation.members.length, 2,
+                 "saved relation does not have exactly two members"
+    assert_equal checkrelation.tags.length, 1,
+                 "saved relation does not contain exactly one tag"
+    assert_equal changeset.id, checkrelation.changeset.id,
+                 "saved relation does not belong in the changeset it was assigned to"
+    assert_equal user.id, checkrelation.changeset.user_id,
+                 "saved relation does not belong to user that created it"
+    assert_equal true, checkrelation.visible,
+                 "saved relation is not visible"
     # ok the relation is there but can we also retrieve it?
     get :read, :id => relationid
     assert_response :success
-
   end
 
   # ------------------------------------
@@ -335,20 +368,23 @@ class RelationControllerTest < ActionController::TestCase
 
   ##
   # test that, when tags are updated on a relation, the correct things
-  # happen to the correct tables and the API gives sensible results. 
+  # happen to the correct tables and the API gives sensible results.
   # this is to test a case that gregory marler noticed and posted to
   # josm-dev.
   ## FIXME Move this to an integration test
   def test_update_relation_tags
-    basic_authorization "test@example.com", "test"
-    rel_id = current_relations(:multi_tag_relation).id
-    cs_id = changesets(:public_user_first_change).id
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    relation = create(:relation)
+    create_list(:relation_tag, 4, :relation => relation)
 
-    with_relation(rel_id) do |rel|
+    basic_authorization user.email, "test"
+
+    with_relation(relation.id) do |rel|
       # alter one of the tags
       tag = rel.find("//osm/relation/tag").first
-      tag['v'] = 'some changed value'
-      update_changeset(rel, cs_id)
+      tag["v"] = "some changed value"
+      update_changeset(rel, changeset.id)
 
       # check that the downloaded tags are the same as the uploaded tags...
       new_version = with_update(rel) do |new_rel|
@@ -356,28 +392,31 @@ class RelationControllerTest < ActionController::TestCase
       end
 
       # check the original one in the current_* table again
-      with_relation(rel_id) { |r| assert_tags_equal rel, r }
+      with_relation(relation.id) { |r| assert_tags_equal rel, r }
 
       # now check the version in the history
-      with_relation(rel_id, new_version) { |r| assert_tags_equal rel, r }
+      with_relation(relation.id, new_version) { |r| assert_tags_equal rel, r }
     end
   end
 
   ##
   # test that, when tags are updated on a relation when using the diff
-  # upload function, the correct things happen to the correct tables 
-  # and the API gives sensible results. this is to test a case that 
+  # upload function, the correct things happen to the correct tables
+  # and the API gives sensible results. this is to test a case that
   # gregory marler noticed and posted to josm-dev.
   def test_update_relation_tags_via_upload
-    basic_authorization users(:public_user).email, "test"
-    rel_id = current_relations(:multi_tag_relation).id
-    cs_id = changesets(:public_user_first_change).id
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    relation = create(:relation)
+    create_list(:relation_tag, 4, :relation => relation)
+
+    basic_authorization user.email, "test"
 
-    with_relation(rel_id) do |rel|
+    with_relation(relation.id) do |rel|
       # alter one of the tags
       tag = rel.find("//osm/relation/tag").first
-      tag['v'] = 'some changed value'
-      update_changeset(rel, cs_id)
+      tag["v"] = "some changed value"
+      update_changeset(rel, changeset.id)
 
       # check that the downloaded tags are the same as the uploaded tags...
       new_version = with_update_diff(rel) do |new_rel|
@@ -385,10 +424,25 @@ class RelationControllerTest < ActionController::TestCase
       end
 
       # check the original one in the current_* table again
-      with_relation(rel_id) { |r| assert_tags_equal rel, r }
+      with_relation(relation.id) { |r| assert_tags_equal rel, r }
 
       # now check the version in the history
-      with_relation(rel_id, new_version) { |r| assert_tags_equal rel, r }
+      with_relation(relation.id, new_version) { |r| assert_tags_equal rel, r }
+    end
+  end
+
+  def test_update_wrong_id
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    relation = create(:relation)
+    other_relation = create(:relation)
+
+    basic_authorization user.email, "test"
+    with_relation(relation.id) do |rel|
+      update_changeset(rel, changeset.id)
+      content rel
+      put :update, :id => other_relation.id
+      assert_response :bad_request
     end
   end
 
@@ -397,19 +451,19 @@ class RelationControllerTest < ActionController::TestCase
   # -------------------------------------
 
   def test_create_invalid
-    basic_authorization users(:public_user).email, "test"
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
 
-    # put the relation in a dummy fixture changset
-    changeset_id = changesets(:public_user_first_change).id
+    basic_authorization user.email, "test"
 
     # create a relation with non-existing node as member
-    content "<osm><relation changeset='#{changeset_id}'>" +
-      "<member type='node' ref='0'/><tag k='test' v='yes' />" +
-      "</relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'>" +
+            "<member type='node' ref='0'/><tag k='test' v='yes' />" +
+            "</relation></osm>"
     put :create
     # expect failure
-    assert_response :precondition_failed, 
-        "relation upload with invalid node did not return 'precondition failed'"
+    assert_response :precondition_failed,
+                    "relation upload with invalid node did not return 'precondition failed'"
     assert_equal "Precondition failed: Relation with id  cannot be saved due to Node with id 0", @response.body
   end
 
@@ -417,152 +471,154 @@ class RelationControllerTest < ActionController::TestCase
   # Test creating a relation, with some invalid XML
   # -------------------------------------
   def test_create_invalid_xml
-    basic_authorization users(:public_user).email, "test"
-    
-    # put the relation in a dummy fixture changeset that works
-    changeset_id = changesets(:public_user_first_change).id
-    
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    node = create(:node)
+
+    basic_authorization user.email, "test"
+
     # create some xml that should return an error
-    content "<osm><relation changeset='#{changeset_id}'>" +
-    "<member type='type' ref='#{current_nodes(:used_node_1).id}' role=''/>" +
-    "<tag k='tester' v='yep'/></relation></osm>"
+    content "<osm><relation changeset='#{changeset.id}'>" +
+            "<member type='type' ref='#{node.id}' role=''/>" +
+            "<tag k='tester' v='yep'/></relation></osm>"
     put :create
     # expect failure
     assert_response :bad_request
     assert_match(/Cannot parse valid relation from xml string/, @response.body)
     assert_match(/The type is not allowed only, /, @response.body)
   end
-  
-  
+
   # -------------------------------------
   # Test deleting relations.
   # -------------------------------------
-  
+
   def test_delete
+    private_user = create(:user, :data_public => false)
+    private_user_closed_changeset = create(:changeset, :closed, :user => private_user)
+    user = create(:user)
+    closed_changeset = create(:changeset, :closed, :user => user)
+    changeset = create(:changeset, :user => user)
+    relation = create(:relation)
+    used_relation = create(:relation)
+    super_relation = create(:relation_member, :member => used_relation).relation
+    deleted_relation = create(:relation, :deleted)
+    multi_tag_relation = create(:relation)
+    create_list(:relation_tag, 4, :relation => multi_tag_relation)
+
     ## First try to delete relation without auth
-    delete :delete, :id => current_relations(:visible_relation).id
+    delete :delete, :id => relation.id
     assert_response :unauthorized
-    
-    
+
     ## Then try with the private user, to make sure that you get a forbidden
-    basic_authorization(users(:normal_user).email, "test")
-    
+    basic_authorization(private_user.email, "test")
+
     # this shouldn't work, as we should need the payload...
-    delete :delete, :id => current_relations(:visible_relation).id
+    delete :delete, :id => relation.id
     assert_response :forbidden
 
     # try to delete without specifying a changeset
-    content "<osm><relation id='#{current_relations(:visible_relation).id}'/></osm>"
-    delete :delete, :id => current_relations(:visible_relation).id
+    content "<osm><relation id='#{relation.id}'/></osm>"
+    delete :delete, :id => relation.id
     assert_response :forbidden
 
     # try to delete with an invalid (closed) changeset
-    content update_changeset(current_relations(:visible_relation).to_xml,
-                             changesets(:normal_user_closed_change).id)
-    delete :delete, :id => current_relations(:visible_relation).id
+    content update_changeset(relation.to_xml,
+                             private_user_closed_changeset.id)
+    delete :delete, :id => relation.id
     assert_response :forbidden
 
     # try to delete with an invalid (non-existent) changeset
-    content update_changeset(current_relations(:visible_relation).to_xml,0)
-    delete :delete, :id => current_relations(:visible_relation).id
+    content update_changeset(relation.to_xml, 0)
+    delete :delete, :id => relation.id
     assert_response :forbidden
 
     # this won't work because the relation is in-use by another relation
-    content(relations(:used_relation).to_xml)
-    delete :delete, :id => current_relations(:used_relation).id
+    content(used_relation.to_xml)
+    delete :delete, :id => used_relation.id
     assert_response :forbidden
 
     # this should work when we provide the appropriate payload...
-    content(relations(:visible_relation).to_xml)
-    delete :delete, :id => current_relations(:visible_relation).id
+    content(relation.to_xml)
+    delete :delete, :id => relation.id
     assert_response :forbidden
 
     # this won't work since the relation is already deleted
-    content(relations(:invisible_relation).to_xml)
-    delete :delete, :id => current_relations(:invisible_relation).id
-    assert_response :forbidden
-
-    # this works now because the relation which was using this one 
-    # has been deleted.
-    content(relations(:used_relation).to_xml)
-    delete :delete, :id => current_relations(:used_relation).id
+    content(deleted_relation.to_xml)
+    delete :delete, :id => deleted_relation.id
     assert_response :forbidden
 
     # this won't work since the relation never existed
     delete :delete, :id => 0
     assert_response :forbidden
 
-    
-
     ## now set auth for the public user
-    basic_authorization(users(:public_user).email, "test");  
+    basic_authorization(user.email, "test")
 
     # this shouldn't work, as we should need the payload...
-    delete :delete, :id => current_relations(:visible_relation).id
+    delete :delete, :id => relation.id
     assert_response :bad_request
 
     # try to delete without specifying a changeset
-    content "<osm><relation id='#{current_relations(:visible_relation).id}' version='#{current_relations(:visible_relation).version}' /></osm>"
-    delete :delete, :id => current_relations(:visible_relation).id
+    content "<osm><relation id='#{relation.id}' version='#{relation.version}' /></osm>"
+    delete :delete, :id => relation.id
     assert_response :bad_request
     assert_match(/Changeset id is missing/, @response.body)
 
     # try to delete with an invalid (closed) changeset
-    content update_changeset(current_relations(:visible_relation).to_xml,
-                             changesets(:normal_user_closed_change).id)
-    delete :delete, :id => current_relations(:visible_relation).id
+    content update_changeset(relation.to_xml,
+                             closed_changeset.id)
+    delete :delete, :id => relation.id
     assert_response :conflict
 
     # try to delete with an invalid (non-existent) changeset
-    content update_changeset(current_relations(:visible_relation).to_xml,0)
-    delete :delete, :id => current_relations(:visible_relation).id
+    content update_changeset(relation.to_xml, 0)
+    delete :delete, :id => relation.id
     assert_response :conflict
 
     # this won't work because the relation is in a changeset owned by someone else
-    content(relations(:used_relation).to_xml)
-    delete :delete, :id => current_relations(:used_relation).id
-    assert_response :conflict, 
-    "shouldn't be able to delete a relation in a changeset owned by someone else (#{@response.body})"
+    content update_changeset(relation.to_xml, create(:changeset).id)
+    delete :delete, :id => relation.id
+    assert_response :conflict,
+                    "shouldn't be able to delete a relation in a changeset owned by someone else (#{@response.body})"
 
     # this won't work because the relation in the payload is different to that passed
-    content(relations(:public_used_relation).to_xml)
-    delete :delete, :id => current_relations(:used_relation).id
-    assert_not_equal relations(:public_used_relation).id, current_relations(:used_relation).id
+    content update_changeset(relation.to_xml, changeset.id)
+    delete :delete, :id => create(:relation).id
     assert_response :bad_request, "shouldn't be able to delete a relation when payload is different to the url"
-    
+
     # this won't work because the relation is in-use by another relation
-    content(relations(:public_used_relation).to_xml)
-    delete :delete, :id => current_relations(:public_used_relation).id
-    assert_response :precondition_failed, 
-       "shouldn't be able to delete a relation used in a relation (#{@response.body})"
-    assert_equal "Precondition failed: The relation 5 is used in relation 6.", @response.body
+    content update_changeset(used_relation.to_xml, changeset.id)
+    delete :delete, :id => used_relation.id
+    assert_response :precondition_failed,
+                    "shouldn't be able to delete a relation used in a relation (#{@response.body})"
+    assert_equal "Precondition failed: The relation #{used_relation.id} is used in relation #{super_relation.id}.", @response.body
 
     # this should work when we provide the appropriate payload...
-    content(relations(:multi_tag_relation).to_xml)
-    delete :delete, :id => current_relations(:multi_tag_relation).id
+    content update_changeset(multi_tag_relation.to_xml, changeset.id)
+    delete :delete, :id => multi_tag_relation.id
     assert_response :success
 
     # valid delete should return the new version number, which should
     # be greater than the old version number
-    assert @response.body.to_i > current_relations(:visible_relation).version,
-       "delete request should return a new version number for relation"
+    assert @response.body.to_i > multi_tag_relation.version,
+           "delete request should return a new version number for relation"
 
     # this won't work since the relation is already deleted
-    content(relations(:invisible_relation).to_xml)
-    delete :delete, :id => current_relations(:invisible_relation).id
+    content update_changeset(deleted_relation.to_xml, changeset.id)
+    delete :delete, :id => deleted_relation.id
     assert_response :gone
-    
+
     # Public visible relation needs to be deleted
-    content(relations(:public_visible_relation).to_xml)
-    delete :delete, :id => current_relations(:public_visible_relation).id
+    content update_changeset(super_relation.to_xml, changeset.id)
+    delete :delete, :id => super_relation.id
     assert_response :success
 
-    # this works now because the relation which was using this one 
+    # this works now because the relation which was using this one
     # has been deleted.
-    content(relations(:public_used_relation).to_xml)
-    delete :delete, :id => current_relations(:public_used_relation).id
-    assert_response :success, 
-       "should be able to delete a relation used in an old relation (#{@response.body})"
+    content update_changeset(used_relation.to_xml, changeset.id)
+    delete :delete, :id => used_relation.id
+    assert_response :success,
+                    "should be able to delete a relation used in an old relation (#{@response.body})"
 
     # this won't work since the relation never existed
     delete :delete, :id => 0
@@ -573,23 +629,30 @@ class RelationControllerTest < ActionController::TestCase
   # when a relation's tag is modified then it should put the bounding
   # box of all its members into the changeset.
   def test_tag_modify_bounding_box
-    # in current fixtures, relation 5 contains nodes 3 and 5 (node 3
-    # indirectly via way 3), so the bbox should be [3,3,5,5].
-    check_changeset_modify(BoundingBox.new(3,3,5,5)) do |changeset_id|
+    relation = create(:relation)
+    node1 = create(:node, :lat => 3, :lon => 3)
+    node2 = create(:node, :lat => 5, :lon => 5)
+    way = create(:way)
+    create(:way_node, :way => way, :node => node1)
+    create(:relation_member, :relation => relation, :member => way)
+    create(:relation_member, :relation => relation, :member => node2)
+    # the relation contains nodes1 and node2 (node1
+    # indirectly via the way), so the bbox should be [3,3,5,5].
+    check_changeset_modify(BoundingBox.new(3, 3, 5, 5)) do |changeset_id|
       # add a tag to an existing relation
-      relation_xml = current_relations(:visible_relation).to_xml
+      relation_xml = relation.to_xml
       relation_element = relation_xml.find("//osm/relation").first
       new_tag = XML::Node.new("tag")
-      new_tag['k'] = "some_new_tag"
-      new_tag['v'] = "some_new_value"
+      new_tag["k"] = "some_new_tag"
+      new_tag["v"] = "some_new_value"
       relation_element << new_tag
-      
+
       # update changeset ID to point to new changeset
       update_changeset(relation_xml, changeset_id)
-      
+
       # upload the change
       content relation_xml
-      put :update, :id => current_relations(:visible_relation).id
+      put :update, :id => relation.id
       assert_response :success, "can't update relation for tag/bbox test"
     end
   end
@@ -598,72 +661,89 @@ class RelationControllerTest < ActionController::TestCase
   # add a member to a relation and check the bounding box is only that
   # element.
   def test_add_member_bounding_box
-    relation_id = current_relations(:visible_relation).id
-
-    [current_nodes(:used_node_1),
-     current_nodes(:used_node_2),
-     current_ways(:used_way),
-     current_ways(:way_with_versions)
-    ].each_with_index do |element, version|
+    relation = create(:relation)
+    node1 = create(:node, :lat => 4, :lon => 4)
+    node2 = create(:node, :lat => 7, :lon => 7)
+    way1 = create(:way)
+    create(:way_node, :way => way1, :node => create(:node, :lat => 8, :lon => 8))
+    way2 = create(:way)
+    create(:way_node, :way => way2, :node => create(:node, :lat => 9, :lon => 9), :sequence_id => 1)
+    create(:way_node, :way => way2, :node => create(:node, :lat => 10, :lon => 10), :sequence_id => 2)
+
+    [node1, node2, way1, way2].each do |element|
       bbox = element.bbox.to_unscaled
       check_changeset_modify(bbox) do |changeset_id|
-        relation_xml = Relation.find(relation_id).to_xml
+        relation_xml = Relation.find(relation.id).to_xml
         relation_element = relation_xml.find("//osm/relation").first
         new_member = XML::Node.new("member")
-        new_member['ref'] = element.id.to_s
-        new_member['type'] = element.class.to_s.downcase
-        new_member['role'] = "some_role"
+        new_member["ref"] = element.id.to_s
+        new_member["type"] = element.class.to_s.downcase
+        new_member["role"] = "some_role"
         relation_element << new_member
-      
+
         # update changeset ID to point to new changeset
         update_changeset(relation_xml, changeset_id)
-      
+
         # upload the change
         content relation_xml
-        put :update, :id => current_relations(:visible_relation).id
+        put :update, :id => relation.id
         assert_response :success, "can't update relation for add #{element.class}/bbox test: #{@response.body}"
 
-        # get it back and check the ordering 
-        get :read, :id => relation_id
+        # get it back and check the ordering
+        get :read, :id => relation.id
         assert_response :success, "can't read back the relation: #{@response.body}"
         check_ordering(relation_xml, @response.body)
       end
     end
   end
-  
+
   ##
-  # remove a member from a relation and check the bounding box is 
+  # remove a member from a relation and check the bounding box is
   # only that element.
   def test_remove_member_bounding_box
-    check_changeset_modify(BoundingBox.new(5,5,5,5)) do |changeset_id|
+    relation = create(:relation)
+    node1 = create(:node, :lat => 3, :lon => 3)
+    node2 = create(:node, :lat => 5, :lon => 5)
+    create(:relation_member, :relation => relation, :member => node1)
+    create(:relation_member, :relation => relation, :member => node2)
+
+    check_changeset_modify(BoundingBox.new(5, 5, 5, 5)) do |changeset_id|
       # remove node 5 (5,5) from an existing relation
-      relation_xml = current_relations(:visible_relation).to_xml
-      relation_xml.
-        find("//osm/relation/member[@type='node'][@ref='5']").
-        first.remove!
-      
+      relation_xml = relation.to_xml
+      relation_xml
+        .find("//osm/relation/member[@type='node'][@ref='#{node2.id}']")
+        .first.remove!
+
       # update changeset ID to point to new changeset
       update_changeset(relation_xml, changeset_id)
-      
+
       # upload the change
       content relation_xml
-      put :update, :id => current_relations(:visible_relation).id
+      put :update, :id => relation.id
       assert_response :success, "can't update relation for remove node/bbox test"
     end
   end
-  
+
   ##
   # check that relations are ordered
   def test_relation_member_ordering
-    basic_authorization(users(:public_user).email, "test")
-    
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    node1 = create(:node)
+    node2 = create(:node)
+    node3 = create(:node)
+    way1 = create(:way_with_nodes, :nodes_count => 2)
+    way2 = create(:way_with_nodes, :nodes_count => 2)
+
+    basic_authorization(user.email, "test")
+
     doc_str = <<OSM
 <osm>
- <relation changeset='4'>
-  <member ref='1' type='node' role='first'/>
-  <member ref='3' type='node' role='second'/>
-  <member ref='1' type='way' role='third'/>
-  <member ref='3' type='way' role='fourth'/>
+ <relation changeset='#{changeset.id}'>
+  <member ref='#{node1.id}' type='node' role='first'/>
+  <member ref='#{node2.id}' type='node' role='second'/>
+  <member ref='#{way1.id}' type='way' role='third'/>
+  <member ref='#{way2.id}' type='way' role='fourth'/>
  </relation>
 </osm>
 OSM
@@ -681,19 +761,19 @@ OSM
 
     # insert a member at the front
     new_member = XML::Node.new "member"
-    new_member['ref'] = 5.to_s
-    new_member['type'] = 'node'
-    new_member['role'] = 'new first'
+    new_member["ref"] = node3.id.to_s
+    new_member["type"] = "node"
+    new_member["role"] = "new first"
     doc.find("//osm/relation").first.child.prev = new_member
     # update the version, should be 1?
-    doc.find("//osm/relation").first['id'] = relation_id.to_s
-    doc.find("//osm/relation").first['version'] = 1.to_s
+    doc.find("//osm/relation").first["id"] = relation_id.to_s
+    doc.find("//osm/relation").first["version"] = 1.to_s
 
     # upload the next version of the relation
     content doc
     put :update, :id => relation_id
     assert_response :success, "can't update relation: #{@response.body}"
-    new_version = @response.body.to_i
+    assert_equal 2, @response.body.to_i
 
     # get it back again and check the ordering again
     get :read, :id => relation_id
@@ -708,30 +788,36 @@ OSM
     end
   end
 
-  ## 
+  ##
   # check that relations can contain duplicate members
   def test_relation_member_duplicates
+    private_user = create(:user, :data_public => false)
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    node1 = create(:node)
+    node2 = create(:node)
+
     doc_str = <<OSM
 <osm>
- <relation changeset='4'>
-  <member ref='1' type='node' role='forward'/>
-  <member ref='3' type='node' role='forward'/>
-  <member ref='1' type='node' role='forward'/>
-  <member ref='3' type='node' role='forward'/>
+ <relation changeset='#{changeset.id}'>
+  <member ref='#{node1.id}' type='node' role='forward'/>
+  <member ref='#{node2.id}' type='node' role='forward'/>
+  <member ref='#{node1.id}' type='node' role='forward'/>
+  <member ref='#{node2.id}' type='node' role='forward'/>
  </relation>
 </osm>
 OSM
     doc = XML::Parser.string(doc_str).parse
 
     ## First try with the private user
-    basic_authorization(users(:normal_user).email, "test");  
+    basic_authorization(private_user.email, "test")
 
     content doc
     put :create
     assert_response :forbidden
 
     ## Now try with the public user
-    basic_authorization(users(:public_user).email, "test");  
+    basic_authorization(user.email, "test")
 
     content doc
     put :create
@@ -747,18 +833,25 @@ OSM
   ##
   # test that the ordering of elements in the history is the same as in current.
   def test_history_ordering
+    user = create(:user)
+    changeset = create(:changeset, :user => user)
+    node1 = create(:node)
+    node2 = create(:node)
+    node3 = create(:node)
+    node4 = create(:node)
+
     doc_str = <<OSM
 <osm>
- <relation changeset='4'>
-  <member ref='1' type='node' role='forward'/>
-  <member ref='5' type='node' role='forward'/>
-  <member ref='4' type='node' role='forward'/>
-  <member ref='3' type='node' role='forward'/>
+ <relation changeset='#{changeset.id}'>
+  <member ref='#{node1.id}' type='node' role='forward'/>
+  <member ref='#{node4.id}' type='node' role='forward'/>
+  <member ref='#{node3.id}' type='node' role='forward'/>
+  <member ref='#{node2.id}' type='node' role='forward'/>
  </relation>
 </osm>
 OSM
     doc = XML::Parser.string(doc_str).parse
-    basic_authorization(users(:public_user).email, "test");  
+    basic_authorization(user.email, "test")
 
     content doc
     put :create
@@ -781,28 +874,36 @@ OSM
   ##
   # remove all the members from a relation. the result is pretty useless, but
   # still technically valid.
-  def test_remove_all_members 
-    check_changeset_modify(BoundingBox.new(3,3,5,5)) do |changeset_id|
-      relation_xml = current_relations(:visible_relation).to_xml
-      relation_xml.
-        find("//osm/relation/member").
-        each {|m| m.remove!}
-      
+  def test_remove_all_members
+    relation = create(:relation)
+    node1 = create(:node, :lat => 3, :lon => 3)
+    node2 = create(:node, :lat => 5, :lon => 5)
+    way = create(:way)
+    create(:way_node, :way => way, :node => node1)
+    create(:relation_member, :relation => relation, :member => way)
+    create(:relation_member, :relation => relation, :member => node2)
+
+    check_changeset_modify(BoundingBox.new(3, 3, 5, 5)) do |changeset_id|
+      relation_xml = relation.to_xml
+      relation_xml
+        .find("//osm/relation/member")
+        .each(&:remove!)
+
       # update changeset ID to point to new changeset
       update_changeset(relation_xml, changeset_id)
-      
+
       # upload the change
       content relation_xml
-      put :update, :id => current_relations(:visible_relation).id
+      put :update, :id => relation.id
       assert_response :success, "can't update relation for remove all members test"
-      checkrelation = Relation.find(current_relations(:visible_relation).id)
-      assert_not_nil(checkrelation, 
+      checkrelation = Relation.find(relation.id)
+      assert_not_nil(checkrelation,
                      "uploaded relation not found in database after upload")
       assert_equal(0, checkrelation.members.length,
                    "relation contains members but they should have all been deleted")
     end
   end
-  
+
   # ============================================================
   # utility functions
   # ============================================================
@@ -814,11 +915,11 @@ OSM
     new_doc = XML::Parser.string(xml).parse
 
     doc_members = doc.find("//osm/relation/member").collect do |m|
-      [m['ref'].to_i, m['type'].to_sym, m['role']]
+      [m["ref"].to_i, m["type"].to_sym, m["role"]]
     end
 
     new_members = new_doc.find("//osm/relation/member").collect do |m|
-      [m['ref'].to_i, m['type'].to_sym, m['role']]
+      [m["ref"].to_i, m["type"].to_sym, m["role"]]
     end
 
     doc_members.zip(new_members).each do |d, n|
@@ -831,7 +932,7 @@ OSM
   # that the changeset bounding box is +bbox+.
   def check_changeset_modify(bbox)
     ## First test with the private user to check that you get a forbidden
-    basic_authorization(users(:normal_user).email, "test");  
+    basic_authorization(create(:user, :data_public => false).email, "test")
 
     # create a new changeset for this operation, so we are assured
     # that the bounding box will be newly-generated.
@@ -841,10 +942,9 @@ OSM
       assert_response :forbidden, "shouldn't be able to create changeset for modify test, as should get forbidden"
     end
 
-    
     ## Now do the whole thing with the public user
-    basic_authorization(users(:public_user).email, "test")
-    
+    basic_authorization(create(:user).email, "test")
+
     # create a new changeset for this operation, so we are assured
     # that the bounding box will be newly-generated.
     changeset_id = with_controller(ChangesetController.new) do
@@ -862,11 +962,11 @@ OSM
       get :read, :id => changeset_id
       assert_response :success, "can't re-read changeset for modify test"
       assert_select "osm>changeset", 1, "Changeset element doesn't exist in #{@response.body}"
-      assert_select "osm>changeset[id=#{changeset_id}]", 1, "Changeset id=#{changeset_id} doesn't exist in #{@response.body}"
-      assert_select "osm>changeset[min_lon=#{bbox.min_lon}]", 1, "Changeset min_lon wrong in #{@response.body}"
-      assert_select "osm>changeset[min_lat=#{bbox.min_lat}]", 1, "Changeset min_lat wrong in #{@response.body}"
-      assert_select "osm>changeset[max_lon=#{bbox.max_lon}]", 1, "Changeset max_lon wrong in #{@response.body}"
-      assert_select "osm>changeset[max_lat=#{bbox.max_lat}]", 1, "Changeset max_lat wrong in #{@response.body}"
+      assert_select "osm>changeset[id='#{changeset_id}']", 1, "Changeset id=#{changeset_id} doesn't exist in #{@response.body}"
+      assert_select "osm>changeset[min_lon='#{bbox.min_lon}']", 1, "Changeset min_lon wrong in #{@response.body}"
+      assert_select "osm>changeset[min_lat='#{bbox.min_lat}']", 1, "Changeset min_lat wrong in #{@response.body}"
+      assert_select "osm>changeset[max_lon='#{bbox.max_lon}']", 1, "Changeset max_lon wrong in #{@response.body}"
+      assert_select "osm>changeset[max_lat='#{bbox.max_lat}']", 1, "Changeset max_lat wrong in #{@response.body}"
     end
   end
 
@@ -887,8 +987,8 @@ OSM
   end
 
   ##
-  # updates the relation (XML) +rel+ and 
-  # yields the new version of that relation into the block. 
+  # updates the relation (XML) +rel+ and
+  # yields the new version of that relation into the block.
   # the parsed XML doc is retured.
   def with_update(rel)
     rel_id = rel.find("//osm/relation").first["id"].to_i
@@ -904,23 +1004,23 @@ OSM
 
     yield new_rel
 
-    return version
+    version
   end
 
   ##
   # updates the relation (XML) +rel+ via the diff-upload API and
-  # yields the new version of that relation into the block. 
+  # yields the new version of that relation into the block.
   # the parsed XML doc is retured.
   def with_update_diff(rel)
     rel_id = rel.find("//osm/relation").first["id"].to_i
-    cs_id = rel.find("//osm/relation").first['changeset'].to_i
+    cs_id = rel.find("//osm/relation").first["changeset"].to_i
     version = nil
 
     with_controller(ChangesetController.new) do
       doc = OSM::API.new.get_xml_doc
-      change = XML::Node.new 'osmChange'
+      change = XML::Node.new "osmChange"
       doc.root = change
-      modify = XML::Node.new 'modify'
+      modify = XML::Node.new "modify"
       change << modify
       modify << doc.import(rel.find("//osm/relation").first)
 
@@ -928,29 +1028,28 @@ OSM
       post :upload, :id => cs_id
       assert_response :success, "can't upload diff relation: #{@response.body}"
       version = xml_parse(@response.body).find("//diffResult/relation").first["new_version"].to_i
-    end      
-    
+    end
+
     # now get the new version
     get :read, :id => rel_id
     assert_response :success
     new_rel = xml_parse(@response.body)
-    
+
     yield new_rel
-    
-    return version
+
+    version
   end
 
   ##
   # returns a k->v hash of tags from an xml doc
-  def get_tags_as_hash(a) 
-    a.find("//osm/relation/tag").sort_by { |v| v['k'] }.inject({}) do |h,v|
-      h[v['k']] = v['v']
-      h
+  def get_tags_as_hash(a)
+    a.find("//osm/relation/tag").sort_by { |v| v["k"] }.each_with_object({}) do |v, h|
+      h[v["k"]] = v["v"]
     end
   end
-  
+
   ##
-  # assert that all tags on relation documents +a+ and +b+ 
+  # assert that all tags on relation documents +a+ and +b+
   # are equal
   def assert_tags_equal(a, b)
     # turn the XML doc into tags hashes
@@ -959,23 +1058,23 @@ OSM
 
     assert_equal a_tags.keys, b_tags.keys, "Tag keys should be identical."
     a_tags.each do |k, v|
-      assert_equal v, b_tags[k], 
-        "Tags which were not altered should be the same. " +
-        "#{a_tags.inspect} != #{b_tags.inspect}"
+      assert_equal v, b_tags[k],
+                   "Tags which were not altered should be the same. " +
+                   "#{a_tags.inspect} != #{b_tags.inspect}"
     end
   end
 
   ##
   # update the changeset_id of a node element
   def update_changeset(xml, changeset_id)
-    xml_attr_rewrite(xml, 'changeset', changeset_id)
+    xml_attr_rewrite(xml, "changeset", changeset_id)
   end
 
   ##
   # update an attribute in the node element
   def xml_attr_rewrite(xml, name, value)
     xml.find("//osm/relation").first[name] = value.to_s
-    return xml
+    xml
   end
 
   ##