zipFile.close()
        }
    }

    protected TestFile unpackDistribution(type = getDistributionLabel(), TestFile into = testDirectory) {
        TestFile zip = getZip(type)
        zip.usingNativeTools().unzipTo(into)
        assert into.listFiles().size() == 1
        into.listFiles()[0]
    }

    protected TestFile getZip(String type = getDistributionLabel()) {
        switch (type) {

        when:
        runViaUnixStartScriptWithJavaHome(testJavaHome.absolutePath)

        then:
        outputContains('Hello World!')

        cleanup:
        testJavaHome.usingNativeTools().deleteDir() //remove symlink
    }

    @Requires(UnitTestPreconditions.UnixDerivative)
    def "java PID equals script PID"() {
        given:
        succeeds('installDist')

        this(new File(uri));
    }

    public TestFile(String path) {
        this(new File(path));
    }

    public TestFile(URL url) {
        this(toUri(url));
    }

    public TestFile usingNativeTools() {
        useNativeTools = true;
        return this;
    }

    public TestFile java(@Language("java") String src) {