public function testEachRowOf() { $columnBag = with(new \mechanicious\Columnizer\Columnizer($this->mockData))->columnizeRowArray(); $tableman = new \mechanicious\Tableman\Tableman($columnBag); $tableman->eachRowOf('age', function (&$ref, &$age, $rowIndex) { $age = 'oops?'; }); $this->assertEquals($tableman->get('age')->first(), 'oops?'); $this->assertFalse($tableman->get('name')->first() === 'oops?'); }