saveProperties(properties, outputFile);
    }

    private String implementationClasspath() {
        StringBuilder implementationClasspath = new StringBuilder();
        Joiner.on(File.pathSeparator).appendTo(implementationClasspath, getPaths());
        return implementationClasspath.toString();
    }

    private void saveProperties(Properties properties, File outputFile) {
        try {

        1 * rootProperties.set('prop', 'value')
    }

    def "loads project properties from gradle.properties file in project dir"() {
        given:
        GUtil.saveProperties(new Properties([prop: 'rootValue']), rootPropertiesFile())
        GUtil.saveProperties(new Properties([prop: 'childValue']), childPropertiesFile())

        when:
        loader.load(settings, gradle)

        then:

        String existingArgs = properties.getProperty(ORG_GRADLE_JVMARGS, "");
        properties.setProperty(ORG_GRADLE_JVMARGS, "-Xmx512m -XX:MaxMetaspaceSize=512m -XX:+HeapDumpOnOutOfMemoryError " + existingArgs);
        GUtil.saveProperties(properties, propertiesFile);
    }

            Properties properties = new Properties();
            properties.setProperty(INCEPTION_TIMESTAMP_KEY, String.valueOf(inceptionTimestamp));
            GUtil.saveProperties(properties, propertiesFile);
            return inceptionTimestamp;
        });
    }

    @Override
    public void stop() {
        cache.close();
    }

    @Override

    }

    def "fails when no implementation class specified in properties file"() {
        def properties = new Properties()
        def propertiesFile = testDir.file("prop")
        GUtil.saveProperties(properties, propertiesFile)
        def url = propertiesFile.toURI().toURL()

        given:
        _ * classLoader.getResource("META-INF/gradle-plugins/noImpl.properties") >> url

        when:

            throw new UncheckedIOException(e);
        } finally {
            IoActions.closeQuietly(inputStream);
        }
        return properties;
    }

    public static void saveProperties(Properties properties, File propertyFile) {
        try {
            FileOutputStream propertiesFileOutputStream = new FileOutputStream(propertyFile);
            try {

            throw new UncheckedIOException(e);
        } finally {
            IoActions.closeQuietly(inputStream);
        }
        return properties;
    }

    public static void saveProperties(Properties properties, File propertyFile) {
        try {
            FileOutputStream propertiesFileOutputStream = new FileOutputStream(propertyFile);
            try {