/**
* Test buffer.
*
* @param Operation $operation
* The operation to perform tests on.
*
* @dataProvider operationDataProvider
*/
public function testBuffer(Operation $operation)
{
$performed = false;
$callback = function () use(&$performed) {
$performed = true;
return 'performed';
};
$operation->onBuffer($callback);
$check = $operation->getBufferCallbacks();
$this->assertSame($callback, reset($check), 'Correct callback was not set.');
$operation->buffer();
$this->assertTrue($performed, 'Callback was not executed.');
$check = $operation->getResult();
$this->assertSame('performed', $check, 'Callback did not return proper result.');
}
