/** * Test splicing array of elements into collection * * @return void */ public function testSpliceWithArrayOfReplacements() { $slice = $this->collection->splice(1, 1, [7, 8, 9]); $this->assertInstanceOf(Collection::class, $slice); $this->assertAttributeEquals([2], 'elements', $slice); $this->assertAttributeEquals([1, 7, 8, 9, 3], 'elements', $this->collection); }