PHP Collections VectorInterface::keys Examples

Example #1

File: CollectionsTestCase.php Project: ugochimbo/collections

 /**
  * @test
  */
 public function is_should_return_keys()
 {
     if ($this->coll instanceof MapInterface) {
         $this->coll->add(new Pair(0, 'value'));
     } else {
         $this->coll->add('value');
     }
     $keys = $this->coll->keys();
     $this->assertInstanceOf(VectorInterface::class, $keys);
     $this->assertEquals([0], $keys->toArray());
 }