public function testGetAliases() { $this->rawLayoutBuilder->add('root', null, 'root')->add('header', 'root', 'header')->addAlias('root_alias1', 'root')->addAlias('root_alias2', 'root_alias1'); $this->assertEquals(['root_alias1', 'root_alias2'], $this->rawLayoutBuilder->getAliases('root')); $this->assertEquals([], $this->rawLayoutBuilder->getAliases('root_alias1')); $this->assertEquals([], $this->rawLayoutBuilder->getAliases('root_alias2')); $this->assertEquals([], $this->rawLayoutBuilder->getAliases('header')); $this->assertEquals([], $this->rawLayoutBuilder->getAliases('unknown')); }