Google\Cloud\Tests\Datastore\KeyTest::testAncestor PHP Method

    public function testAncestor()
    {
        $key = new Key('foo', ['path' => [['kind' => 'thing']]]);
        $key->ancestor('Hello', 'World');
        $this->assertEquals(['kind' => 'Hello', 'name' => 'World'], $key->keyObject()['path'][0]);
        $this->assertEquals(['kind' => 'thing'], $key->keyObject()['path'][1]);
    }