public function testDeleteFile()
{
$file1 = $this->fixtures . '/file1.txt';
$this->assertTrue($this->file->copy($file1, $this->workspace . '/file1.txt'));
$this->assertTrue($this->file->delete($this->workspace . '/file1.txt'));
$this->assertFalse($this->file->exists($this->workspace . '/file1.txt'));
}