public function unlinkTest()
{
$path = 'mockScheme1://foo/bar';
$this->streamWrapperAdapter->expects($this->once())->method('createStreamWrapper')->with($path);
$this->mockStreamWrapper->expects($this->once())->method('unlink')->with($path)->will($this->returnValue(true));
$this->assertTrue($this->streamWrapperAdapter->unlink($path));
}