public function testWrite()
{
$data = [['key1' => 'value1'], ['key2' => 'value2']];
$fileReader = new DummyFileReader();
$yaml = new Yaml($fileReader, new Parser(), new Dumper(), 2);
$yaml->write($data);
$this->assertSame("-\n key1: value1\n-\n key2: value2\n", $fileReader->read());
}