results1.assertIsFile()
        results2.assertIsFile()
        assertThat(results1.linesThat(containsString('VM START TIME =')).get(0), equalTo(results2.linesThat(containsString('VM START TIME =')).get(0)))
    }

    def "can specify maximum number of test classes to execute in a forked jvm"() {
        given:

                return jarFile.getManifest();
            }
        } catch (IOException e) {
            throw new RuntimeException(e);
        }
    }

    public List<String> linesThat(Matcher<? super String> matcher) {
        try {
            try (BufferedReader reader = new BufferedReader(new FileReader(this))) {
                List<String> lines = new ArrayList<>();
                String line;