startBuild("compileJava")

        then:
        handler.waitForAllPendingCalls()

        then:
        handler.releaseAll()

        then:
        succeeds()

        and:
        pidFile().exists()
        def pid2 = pidFile().text.strip() as long
        pid2 == pid1
    }

    private void startBuild(String task) {
        executer

    def buildDirWithScript(buildNum, buildScript) {
        def dir = buildDir(buildNum)
        dir.file("settings.gradle").touch()
        dir.file("build.gradle") << buildScript
        dir
    }

    void startBuild(String javaHome = null, String buildEncoding = null) {
        run {
            executer.withTasks("watch")
            executer.withDaemonIdleTimeoutSecs(daemonIdleTimeout)
            executer.withArguments(