/** * Tests insert * * @return void */ public function testInsert() { $items = [['a' => 1], ['b' => 2]]; $collection = new Collection($items); $iterator = $collection->insert('c', [3, 4]); $this->assertInstanceOf('\\Cake\\Collection\\Iterator\\InsertIterator', $iterator); $this->assertEquals([['a' => 1, 'c' => 3], ['b' => 2, 'c' => 4]], iterator_to_array($iterator)); }