Create changeset subscription resource

test/controllers/changeset_subscriptions_controller_test.rb

@@ -0,0 +1,150 @@
+require "test_helper"
+
+class ChangesetSubscriptionsControllerTest < ActionDispatch::IntegrationTest
+  ##
+  # test all routes which lead to this controller
+  def test_routes
+    assert_routing(
+      { :path => "/changeset/1/subscription", :method => :get },
+      { :controller => "changeset_subscriptions", :action => "show", :changeset_id => "1" }
+    )
+    assert_routing(
+      { :path => "/changeset/1/subscription", :method => :post },
+      { :controller => "changeset_subscriptions", :action => "create", :changeset_id => "1" }
+    )
+    assert_routing(
+      { :path => "/changeset/1/subscription", :method => :delete },
+      { :controller => "changeset_subscriptions", :action => "destroy", :changeset_id => "1" }
+    )
+
+    get "/changeset/1/subscribe"
+    assert_redirected_to "/changeset/1/subscription"
+
+    get "/changeset/1/unsubscribe"
+    assert_redirected_to "/changeset/1/subscription"
+  end
+
+  def test_show_as_anonymous
+    changeset = create(:changeset)
+
+    get changeset_subscription_path(changeset)
+    assert_redirected_to login_path(:referer => changeset_subscription_path(changeset))
+  end
+
+  def test_show_when_not_subscribed
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+
+    session_for(other_user)
+    get changeset_subscription_path(changeset)
+
+    assert_response :success
+    assert_dom ".content-body" do
+      assert_dom "a[href='#{changeset_path(changeset)}']", :text => "Changeset #{changeset.id}"
+      assert_dom "a[href='#{user_path(user)}']", :text => user.display_name
+      assert_dom "form" do
+        assert_dom "> @action", changeset_subscription_path(changeset)
+        assert_dom "input[type=submit]" do
+          assert_dom "> @value", "Subscribe to discussion"
+        end
+      end
+    end
+  end
+
+  def test_show_when_subscribed
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+    changeset.subscribers << other_user
+
+    session_for(other_user)
+    get changeset_subscription_path(changeset)
+
+    assert_response :success
+    assert_dom ".content-body" do
+      assert_dom "a[href='#{changeset_path(changeset)}']", :text => "Changeset #{changeset.id}"
+      assert_dom "a[href='#{user_path(user)}']", :text => user.display_name
+      assert_dom "form" do
+        assert_dom "> @action", changeset_subscription_path(changeset)
+        assert_dom "input[type=submit]" do
+          assert_dom "> @value", "Unsubscribe from discussion"
+        end
+      end
+    end
+  end
+
+  def test_create_success
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+
+    session_for(other_user)
+    assert_difference "changeset.subscribers.count", 1 do
+      post changeset_subscription_path(changeset)
+    end
+    assert_redirected_to changeset_path(changeset)
+    assert changeset.reload.subscribed?(other_user)
+  end
+
+  def test_create_fail
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+    changeset.subscribers << other_user
+
+    # not signed in
+    assert_no_difference "changeset.subscribers.count" do
+      post changeset_subscription_path(changeset)
+    end
+    assert_response :forbidden
+
+    session_for(other_user)
+
+    # bad diary id
+    post changeset_subscription_path(999111)
+    assert_response :not_found
+
+    # trying to subscribe when already subscribed
+    assert_no_difference "changeset.subscribers.count" do
+      post changeset_subscription_path(changeset)
+    end
+  end
+
+  def test_destroy_success
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+    changeset.subscribers << other_user
+
+    session_for(other_user)
+    assert_difference "changeset.subscribers.count", -1 do
+      delete changeset_subscription_path(changeset)
+    end
+    assert_redirected_to changeset_path(changeset)
+    assert_not changeset.reload.subscribed?(other_user)
+  end
+
+  def test_unsubscribe_fail
+    user = create(:user)
+    other_user = create(:user)
+    changeset = create(:changeset, :user => user)
+
+    # not signed in
+    assert_no_difference "changeset.subscribers.count" do
+      delete changeset_subscription_path(changeset)
+    end
+    assert_response :forbidden
+
+    session_for(other_user)
+
+    # bad diary id
+    delete changeset_subscription_path(999111)
+    assert_response :not_found
+
+    # trying to unsubscribe when not subscribed
+    assert_no_difference "changeset.subscribers.count" do
+      delete changeset_subscription_path(changeset)
+    end
+  end
+end