public function test_store()
{
$model = m::mock(Lesson::class);
$request = m::mock(StoreRequest::class);
$request->shouldReceive('all')->once()->andReturn([]);
$repo = m::mock(LessonRepository::class);
$repo->shouldReceive('store')->once()->andReturn($model);
App::instance(LessonRepository::class, $repo);
App::instance(StoreRequest::class, $request);
$controller = App::make(LessonController::class);
$lesson = $controller->store();
$this->assertInstanceOf(Lesson::class, $lesson);
}