Neos\Flow\Tests\Unit\Configuration\Source\YamlSourceTest::saveKeepsQuotedKey PHP Method

    public function saveKeepsQuotedKey()
    {
        $pathAndFilename = vfsStream::url('testDirectory') . '/YAMLConfiguration';
        $configurationSource = new YamlSource();
        $mockConfiguration = array('configurationFileHasBeenLoaded' => true, 'foo' => array('Foo.Bar:Baz' => 'a quoted key'));
        $configurationSource->save($pathAndFilename, $mockConfiguration);
        $yaml = 'configurationFileHasBeenLoaded: true' . chr(10) . 'foo:' . chr(10) . '  \'Foo.Bar:Baz\': \'a quoted key\'' . chr(10);
        $this->assertContains($yaml, file_get_contents($pathAndFilename . '.yaml'), 'Configuration was not written to the file as expected.');
    }