Test the initialization of the cache log adapter.

Source

						public function testConstruct() {
		$expected = array(
			'config' => "cachelog",
			'expiry' => "+999 days",
			'key' => "cachelog_testkey",
			'init' => true
		);
		$result = $this->cachelog->_config;
		$this->assertEqual($expected, $result);
	}