result = inTestDirectory().withTasks('a:buildNeeded').run()

        assert result.assertTaskExecuted(':a:build')
        assert result.assertTaskExecuted(':a:jar')
        assert result.assertTaskExecuted(':b:build')
        assert result.assertTaskExecuted(':b:jar')
        assert result.assertTaskExecuted(':c:build')
        assert result.assertTaskExecuted(':c:jar')

        TestFile file = testFile("unknown");

        ExecutionFailure result = inTestDirectory().usingSettingsFile(file).runWithFailure();
        result.assertHasDescription("The specified settings file '" + file + "' does not exist.");

        file.createDir();

        result = inTestDirectory().usingSettingsFile(file).runWithFailure();