Lithium Docs

						public function testWrite() {
		$key = 'key';
		$data = 'data';
		$expiry = '+1 minute';
		$time = time() + 60;

		$closure = $this->File->write($key, $data, $expiry);
		$this->assertTrue(is_callable($closure));

		$params = compact('key', 'data', 'expiry');
		$result = $closure($this->File, $params, null);
		$expected = 25;
		$this->assertEqual($expected, $result);

		$this->assertTrue(file_exists(Libraries::get(true, 'resources') . "/tmp/cache/{$key}"));
		$this->assertEqual(
			file_get_contents(Libraries::get(true, 'resources') . "/tmp/cache/{$key}"),
			"{:expiry:$time}\ndata"
		);

		$this->assertTrue(unlink(Libraries::get(true, 'resources') . "/tmp/cache/{$key}"));
		$this->assertFalse(file_exists(Libraries::get(true, 'resources') . "/tmp/cache/{$key}"));
	}