How to mock App::make() on UnitTesting Laravel 4 - unit-testing

Question

i got a question when i was unit testing my application. I Have a method that require a dependency but only that method need it so i thought to don't inject it by construct but initialize it with App::make() of the IoC container Class. But now how can i unit test that?
Let's say a short example for understand how you unit testing this function of example
class Example {
public function methodToTest()
{
$dependency = App::make('Dependency');
return $dependency->method('toTest');
}
}
Test
public function test_MethodToTest() {
$dependency = m::mock('Dependency');
$dependency->shouldReceive('method')->once()->with('toTest')->andReturn(true);
$class = new Example();
$this->assertTrue($class->methodToTest('toTest')); // does not work
}

Answer 1

You're almost there. Create an anonymous mock with the expectations that you need and then register that mock as the instance for Dependency and you should be good to go.
That would look something like this
public function test_MethodToTest() {
$dependency = m::mock();
$dependency->shouldReceive('method')->once()->with('toTest')->andReturn(true);
App::instance('Dependancy', $dependancy);
$class = new Example();
$this->assertTrue($class->methodToTest()); // should work
}

Answer 2

I would prefer to inject the dependency in Example classes constructor.
class Example{
/** #var Dependency */
private $dependency;
public function __construct(Dependency $dependency){
$this->dependency = $dependency;
}
public function methodToTest(){
return $this->dependency->method('toTest');
}
}
class Test{
public function test_MethodToTest(){
$mock = Mockery::mock(Dependency::class);
$mock->shouldReceive('method')->once()->with('toTest')->andReturn(true);
$class = new Example($mock);
$this->assertTrue($class->methodToTest());
}
}
In your controller, libraries you can then use IoC like this
$example = App::make(Example::class);