@ApplicationHelperTest#test_table_of_content_should_generate_unique_anchors@ concatenates an @expected@ string. Unfortunately, there are two @+@ signs missing, so that the test does not test, what is immediately expected.

The attached patch fixes that bug.

Since the most important element of the expected string - the generated ID - was always part of the generated expected string, this error was technically not relevant. Nevertheless, I think it should be fixed.