How do I mock user permissions for testing authorization in Laravel

1. Create a test class for your authorization logic:

php
namespace Tests\Unit;

use Mockery;
use App\Http\Controllers\PostController;
use Illuminate\Auth\Access\AuthorizationException;
use Tests\TestCase;

class AuthorizationTest extends TestCase
{
    public function testUpdatePostAuthorization()
    {
        $user = Mockery::mock(\App\Models\User::class);
        $user->shouldReceive('can')->with('update', Mockery::any())->andReturn(true);

        $controller = new PostController();
        $controller->authorize('update', new \App\Models\Post());
        // No exception thrown, test passes
    }

    public function testUpdatePostAuthorizationFailure()
    {
        $this->expectException(AuthorizationException::class);

        $user = Mockery::mock(\App\Models\User::class);
        $user->shouldReceive('can')->with('update', Mockery::any())->andReturn(false);

        $controller = new PostController();
        $controller->authorize('update', new \App\Models\Post());
    }

    public function tearDown(): void
    {
        Mockery::close();
    }
}

In this example, we're using Mockery to create a mock `User` object and set expectations on the `can` method. When the `can` method is called with the `'update'` permission, we return `true` in the first test case and `false` in the second test case.

2. Use the `actingAs` method to authenticate a mocked user:

php
namespace Tests\Feature;

use App\Models\User;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;
use Mockery;

class PostControllerTest extends TestCase
{
    use RefreshDatabase;

    public function testUpdatePostWithPermission()
    {
        $user = Mockery::mock(\App\Models\User::class);
        $user->shouldReceive('can')->with('update', Mockery::any())->andReturn(true);

        $this->actingAs($user)
            ->put('/posts/1', ['title' => 'Updated Post'])
            ->assertStatus(302);
    }

    public function testUpdatePostWithoutPermission()
    {
        $user = Mockery::mock(\App\Models\User::class);
        $user->shouldReceive('can')->with('update', Mockery::any())->andReturn(false);

        $this->actingAs($user)
            ->put('/posts/1', ['title' => 'Updated Post'])
            ->assertStatus(403);
    }

    public function tearDown(): void
    {
        Mockery::close();
    }
}

In this feature test, we're using the `actingAs` method to authenticate the mocked `User` object. We then make requests to the `PostController` and assert the expected behavior based on the mocked permissions.

Remember to call `Mockery::close()` in the `tearDown` method to ensure that all mocks are properly cleaned up.

By using this approach, you can effectively test your authorization logic without relying on actual user data or permissions. This makes your tests more isolated and easier to maintain.