public function testWrite()
 {
     $file = new File('/tmp/test');
     $this->assertEquals(true, $file->append("test\n"));
     $this->assertEquals(true, $file->append("test\n"));
     $this->assertEquals(true, $file->copy('/tmp/test2'));
     $this->assertEquals(true, $file->delete());
     $file = new File('/tmp/test2');
     $linecount = 0;
     foreach ($file->lines() as $line) {
         $linecount = $linecount + 1;
     }
     $array = $file->toArray();
     $this->assertEquals(2, count($array));
     $this->assertEquals(2, $linecount);
     $this->assertEquals(true, $file->delete());
     $this->assertEquals(false, $file->isFile());
 }