public function testGettingKeys() { $collection = new Collection([new Entity(['id' => 1]), new Entity(['id' => 2])]); $this->assertEquals([0, 1], $collection->getKeys()); $collection['name'] = new Entity(['id' => 3]); $this->assertEquals([0, 1, 'name'], $collection->getKeys()); $this->assertEquals([0, 1, 2], $collection->reindex()->getKeys()); }