storeSimpleEntry example

        HttpCacheTestCase::clearDirectory(sys_get_temp_dir().'/http_cache');
    }

    public function testReadsAnEmptyArrayWithReadWhenNothingCachedAtKey()
    {
        $this->assertEmpty($this->getStoreMetadata('/nothing'));
    }

    public function testUnlockFileThatDoesExist()
    {
        $this->storeSimpleEntry();
        $this->store->lock($this->request);

        $this->assertTrue($this->store->unlock($this->request));
    }

    public function testUnlockFileThatDoesNotExist()
    {
        $this->assertFalse($this->store->unlock($this->request));
    }

    public function testRemovesEntriesForKeyWithPurge()
    {