when:
        env.setProcessDir(tmpDir.testDirectory)

        then:
        env.processDir.canonicalFile == tmpDir.testDirectory
        new File(".").canonicalFile == tmpDir.testDirectory

        cleanup:
        System.setProperty("user.dir", originalDir.absolutePath)
        env.setProcessDir(originalDir)
    }

    def "can get pid of current process"() {

    }

    @Override
    public void setProcessDir(File processDir) throws NativeIntegrationException {
        setNativeProcessDir(processDir);
        System.setProperty("user.dir", processDir.getAbsolutePath());
    }

    protected abstract void setNativeProcessDir(File processDir);

    @Override
    public boolean maybeSetProcessDir(File processDir) {
        setProcessDir(processDir);
        return true;
    }

    }

    @Override
    public File getProcessDir() throws NativeIntegrationException {
        throw notSupported();
    }

    @Override
    public void setProcessDir(File processDir) throws NativeIntegrationException {
        throw notSupported();
    }

    @Override
    public boolean maybeSetProcessDir(File processDir) {
        return false;
    }

    @Override

    /**
     * Sets the process working directory.
     *
     * @param processDir The directory.
     * @throws NativeIntegrationException If process directory cannot be set.
     */
    void setProcessDir(File processDir) throws NativeIntegrationException;

    /**
     * Sets the process working directory, if possible
     *
     * @param processDir The directory.