then:
        lock.isLockFile(testFileLock)

        expect:
        isVersionLockFileWithInfoRegion(testFileLock, false)
        lock.writeFile {
            isVersionLockFileWithInfoRegion(testFileLock, true)
        }
        isVersionLockFileWithInfoRegion(testFileLock, false)

        cleanup:
        lock?.close()
    }

        lockFile.withDataInputStream { str ->
            assert str.readByte() == 1
            assert str.readBoolean() != dirty
        }
    }

    @Override
    void isVersionLockFileWithInfoRegion(TestFile lockFile, boolean dirty, String processIdentifier, String operationalName) {
        assert lockFile.isFile()
        lockFile.withDataInputStream { str ->
            // state version + dirty flag

                assert str.readLong() == 0
            } else {
                assert str.readLong() != 0
            }
            assert str.read() < 0
        }
    }

    void isVersionLockFileWithInfoRegion(TestFile lockFile, boolean dirty, String processIdentifier, String operationalName) {
        assert lockFile.isFile()
        assert lockFile.length() <= 2048
        lockFile.withDataInputStream { str ->