Changeset discussions

Add support for commenting on changesets with RSS feeds and email
notification of comments to other commenters and people that have
chosen to subscribe to a changeset.

test/integration/user_changeset_comments_test.rb

@@ -0,0 +1,49 @@
+require 'test_helper'
+
+class UserChangesetCommentsTest < ActionDispatch::IntegrationTest
+  fixtures :users, :changesets, :changeset_comments
+
+  # Test 'log in to comment' message for nonlogged in user
+  def test_log_in_message
+    get "/changeset/#{changesets(:normal_user_closed_change).id}"
+    assert_response :success
+    
+    assert_select "div#content" do
+      assert_select "div#sidebar" do
+        assert_select "div#sidebar_content" do
+          assert_select "div.browse-section" do
+            assert_select "div.notice.hide_if_logged_in"
+          end
+        end
+      end
+    end
+  end
+
+  # Test if the form is shown
+  def test_displaying_form
+    get_via_redirect '/login'
+    # We should now be at the login page
+    assert_response :success
+    assert_template 'user/login'
+    # We can now login
+    post  '/login', {'username' => "test@openstreetmap.org", 'password' => "test"}
+    assert_response :redirect
+
+    get "/changeset/#{changesets(:normal_user_closed_change).id}"
+    
+    assert_response :success
+    assert_template 'browse/changeset'
+
+    assert_select "div#content" do
+      assert_select "div#sidebar" do
+        assert_select "div#sidebar_content" do
+          assert_select "div.browse-section" do
+            assert_select "form[action='#']" do
+              assert_select "textarea[name=text]"
+            end
+          end
+        end
+      end
+    end
+  end
+end