/**
* @test
*/
public function testWriteFileAppend()
{
$file = new Filesystem();
$dir = static::getTempPath(__FUNCTION__);
mkdir($dir);
$file1 = rand(1, 10) . rand(0, getrandmax());
$path1 = $dir . DIRECTORY_SEPARATOR . $file1;
file_put_contents($path1, __FUNCTION__);
$file->writeFileAppend($path1, 'appendText');
$this->assertEquals(__FUNCTION__ . 'appendText', $file->readFile($path1));
}
