Laravel Testing Error - testing

Question

I just started with learning how to test within Laravel. I came across some problems though..
I'm testing my controller and want to check if a View has a variable assigned.
My controller code:
class PagesController extends \BaseController {
protected $post;
public function __construct(Post $post) {
$this->post = $post;
}
public function index() {
$posts = $this->post->all();
return View::make('hello', ['posts' => $posts]);
}
}
And my view contains a foreach loop to display all posts:
#foreach ($posts as $post)
{{post->id}}
#endforeach
Last but not least my test file:
class PostControllerTest extends TestCase {
public function __construct()
{
// We have no interest in testing Eloquent
$this->mock = Mockery::mock('Eloquent', 'Post');
}
public function tearDown()
{
Mockery::close();
}
public function testIndex() {
$this->mock->shouldReceive('all')->once()->andReturn('foo');
$this->app->instance('Post', $this->mock);
$this->call('GET', '/');
$this->assertViewHas('posts');
}
}
Now comes the problem, when I run "phpunit" the following error appears:
ErrorException: Invalid argument supplied for foreach()
Any ideas why phpunit returns this error?

Answer 1

Your problem is here:
$this->mock->shouldReceive('all')->once()->andReturn('foo');
$this->post->all() (which is what you're mocking) should return an array, and that's what your view expects. You're returning a string.
$this->mock->shouldReceive('all')->once()->andReturn(array('foo'));
should take care of the error you have, though you'll then get an error of the "Getting property of non-object" type.
You could do this:
$mockPost = new stdClass();
$mockPost->id = 1;
$this->mock->shouldReceive('all')->once()->andReturn(array($mockpost));

Answer 2

You should mock the view as well:
public function testIndex() {
$this->mock->shouldReceive('all')->once()->andReturn('foo');
$this->app->instance('Post', $this->mock);
View::shouldReceive('make')->with('hello', array('posts', 'foo'))->once();
$this->call('GET', '/');
}