How to test Registration and Login in Laravel

I often work with Laravel APIs that require user registration and authentication. Of course, there is no stability in building applications without unit tests. Hence, I create following tests to ensure registration and login functions are working as expected.

TestRegister.php

1. Run php artisan make:test TestRegister
2. Go to tests\Feature and open TestRegister.php
3. Use following test to make sure user registrations are working. Of course, this is a minimal example. But this should give you a good idea of how you can get started.

public function testsRegistration()
  {
    $payload = [
      'name' => 'Jenny',
      'email' => 'jenny@test.com',
      'password' => 'password',
      'level' => '5',
    ];

    $this->json('post', '/api/register', $payload)
    ->assertStatus(201)
    ->assertJsonStructure([
      'data' => [
        'access_token',
        'token_type',
      ],
    ]);;
  }

You’ll need to ajdust $payload variables according to what your API’s register endpoint expects. You’ll also need to adjust assertJsonStructure values based on what you are sending back as response.

4. Use following test to make sure validation works when invalid parameters are given to registration route

public function testsRegistrationValidation()
  {
    $this->json('post', '/api/register')
    ->assertStatus(422)
    ->assertJson([
      "error" => "error: incomplete input", 
      "status" => 422, 
      "data" => [
       "name" => [
          "The name field is required." 
        ], 
        "email" => [
          "The email field is required." 
        ], 
        "password" => [
          "The password field is required." 
        ] 
      ] 
    ]);
  }

TestLogin.php

1. Run php artisan make:test TestLogin a
2. Go to tests\Feature and open TestRegister.php
3. You can use following two tests to ensure user can login and also that validation is working as expected.

public function testsUserLogin()
  {
    $user = factory(User::class)->create([
      'email' => 'arya@wall.com',
      'password' => bcrypt('password'),
    ]);

    $payload = ['email' => 'arya@wall.com', 'password' => 'password'];

    $this->json('POST', 'api/login', $payload)
    ->assertStatus(200)
    ->assertJsonStructure([
      'data' => [
        'access_token',
        'token_type',
      ],
    ]);
  }

  public function testsUserLoginValidation()
  {
    $this->json('POST', 'api/login')
    ->assertStatus(422)
    ->assertJson([
      'message' => 'Invalid login details',
    ]);
  }