public function testMergeCollectionAndOverrideRoutes()
{
$routes1 = new RouteCollection();
$routes1->add('a1', new Route('/a1'));
$routes1->add('a2', new Route('/a2'));
$routes1->add('a3', new Route('/a3'));
$routes2 = new RouteCollection();
$routes2->add('a1', new Route('/aaa1'));
$routes2->add('b2', new Route('/b2'));
$routes1->merge($routes2, true);
$this->assertNull($routes1->match('/a1'));
$this->assertInstanceOf(Route::class, $routes1->match('/aaa1'));
$this->assertInstanceOf(Route::class, $routes1->match('/a2'));
$this->assertInstanceOf(Route::class, $routes1->match('/a3'));
$this->assertInstanceOf(Route::class, $routes1->match('/b2'));
$this->assertCount(4, $routes1->getRoutes());
}
