}

    def "Adding zero JVM arguments is a no-op"() {
        expect:
        loadBuildEnvironment { builder -> builder.addJvmArguments() }
    }

    def "Adding null JVM argument throws NPE"() {
        when:
        loadBuildEnvironment { builder -> builder.addJvmArguments(null as String) }

        then:
        thrown(NullPointerException)

        when:

   * documentation.
   */
  public void add(Runnable runnable, Executor executor) {
    // Fail fast on a null. We throw NPE here because the contract of Executor states that it throws
    // NPE on null listener, so we propagate that contract up into the add method as well.
    checkNotNull(runnable, "Runnable was null.");
    checkNotNull(executor, "Executor was null.");

   * documentation.
   */
  public void add(Runnable runnable, Executor executor) {
    // Fail fast on a null. We throw NPE here because the contract of Executor states that it throws
    // NPE on null listener, so we propagate that contract up into the add method as well.
    checkNotNull(runnable, "Runnable was null.");
    checkNotNull(executor, "Executor was null.");

        //these meta tests mess with the daemon log: do not interfere with other tests when running in parallel
        toolingApi.requireIsolatedDaemons()
    }

    def iteration = 0

    def "does not retry if NPE is thrown in daemon registry in >=1.8"() {
        given:
        iteration++

        when:
        throwWhen(new GradleConnectionException("Test Exception", new NullPointerException()), iteration == 1)

        then: