/** * @test */ public function it_has_methods_to_call_the_wrapped_callback() { $callback = new Callback(function ($result = 'success') { return $result; }); $this->assertEquals('success', $callback->call()); $this->assertEquals('pass', $callback->call('pass')); $sumCallback = new Callback(function ($a, $b, $c) { return $a + $b + $c; }); $this->assertEquals(12, $sumCallback->callArray([4, 10, -2])); }