### Question:
GitHistoryParser { @VisibleForTesting static Pattern compileTestNamePattern(final String definitionDirectory) { return Pattern.compile(definitionDirectory + File.separator + "(\\w+)" + File.separator + FileBasedProctorStore.TEST_DEFINITION_FILENAME); } private  GitHistoryParser(
            final RevWalk revWalk,
            final DiffFormatter diffFormatter,
            final String definitionDirectory
    );   }### Answer:
@Test public void testTestNamePattern() { final Pattern pattern = GitHistoryParser.compileTestNamePattern("matrices/test-definitions"); Matcher matcher = pattern.matcher("matrices/test-definitions/testname/definition.json"); assertTrue(matcher.matches()); assertEquals("testname", matcher.group(1)); matcher = pattern.matcher("matrices/test-definitions/testname/definition"); assertFalse(matcher.matches()); }