public function testGetAliases() { $this->rawLayout->add('test_id', null, 'root'); $this->rawLayout->addAlias('test_alias', 'test_id'); $this->rawLayout->addAlias('another_alias', 'test_alias'); $this->assertEquals(['test_alias', 'another_alias'], $this->rawLayout->getAliases('test_id')); $this->assertEquals([], $this->rawLayout->getAliases('unknown')); }