public function testChunk() { $collection = new Collection(['a', 'b', 'c', 'd']); $this->assertEquals([new Collection(['a', 'b', 'c']), new Collection(['d'])], $collection->chunk(3)); $this->assertEquals([new Collection(['a', 'b']), new Collection(['c', 'd'])], $collection->chunk(2)); $this->assertEquals([new Collection(['a', 'b', 'c', 'd'])], $collection->chunk(5)); }