/**
  * Test setting the current working directory to a file.
  *
  * @since 0.1.0
  */
 public function test_set_cwd_file()
 {
     $this->assertTrue($this->mock->add_file('/test.txt'));
     $this->assertFalse($this->mock->set_cwd('/test.txt'));
     $this->assertEquals('/', $this->mock->get_cwd());
 }
 /**
  * @since 0.1.0
  */
 public function cwd()
 {
     return self::$mock->get_cwd();
 }