Neos\Flow\Tests\Unit\I18n\ServiceTest::getLocalizedFilenameReturnsCorrectlyLocalizedFilename PHP Method

    public function getLocalizedFilenameReturnsCorrectlyLocalizedFilename()
    {
        $desiredLocale = new I18n\Locale('en_GB');
        $parentLocale = new I18n\Locale('en');
        $localeChain = ['en_GB' => $desiredLocale, 'en' => $parentLocale];
        $filename = 'vfs://Foo/Bar/Public/images/foobar.png';
        $expectedFilename = 'vfs://Foo/Bar/Public/images/foobar.en.png';
        mkdir(dirname($filename), 0777, true);
        file_put_contents($expectedFilename, 'FooBar');
        $service = $this->getMockBuilder(I18n\Service::class)->setMethods(['getLocaleChain'])->getMock();
        $service->expects($this->atLeastOnce())->method('getLocaleChain')->with($desiredLocale)->will($this->returnValue($localeChain));
        list($result, ) = $service->getLocalizedFilename($filename, $desiredLocale);
        $this->assertEquals($expectedFilename, $result);
    }