assertEquals(['access_token' => ''], $insecure->fetchAuthToken()); } public function testGetCacheKey() { $insecure = new InsecureCredentials(); $this->assertNull($insecure->getCacheKey()); } public function testGetLastReceivedToken() { $insecure = new InsecureCredentials(); $this->assertEquals(['access_token' => ''], $insecure->getLastReceivedToken()); } }