yii2-bootstrap/tests/unit/extensions/mongo/DatabaseTest.php

<?php

namespace yiiunit\extensions\mongo;

use yii\mongo\Collection;

/**
 * @group mongo
 */
class DatabaseTest extends MongoTestCase
{
	protected function tearDown()
	{
		$this->dropCollection('customer');
		parent::tearDown();
	}

	// Tests :

	public function testGetCollection()
	{
		$database = $connection = $this->getConnection()->getDatabase();

		$collection = $database->getCollection('customer');
		$this->assertTrue($collection instanceof Collection);
		$this->assertTrue($collection->mongoCollection instanceof \MongoCollection);

		$collection2 = $database->getCollection('customer');
		$this->assertTrue($collection === $collection2);

		$collectionRefreshed = $database->getCollection('customer', true);
		$this->assertFalse($collection === $collectionRefreshed);
	}

	public function testCommand()
	{
		$database = $connection = $this->getConnection()->getDatabase();

		$result = $database->execute([
			'distinct' => 'customer',
			'key' => 'name'
		]);
		$this->assertTrue(array_key_exists('ok', $result));
		$this->assertTrue(array_key_exists('values', $result));
	}
}