How to generate Passport oauth_clients for testing database?

Question

I'm testing api endpoint which is authenticated with laravel passport. I'm writing a feature test for checking if oauth/token can return a valid access_token. It is working fine in postman but I am using a different database for testing so when I run the test I'm always getting 400 error. Though I'm able to test all authenticated routes but I'm stuck when I want to test api/login or oauth/token endpoints. I'm running artisan command to install passport for test database. How to get client id and secret?

In TestCase class

public function setUp(): void
    {
        parent::setUp();

        Artisan::call('migrate', ['-vvv' => true]);
        Artisan::call('passport:install', ['-vvv' => true]);
        Artisan::call('db:seed', ['-vvv' => true]);
    }

LoginTest class

public function test_it_returns_a_valid_token_if_credentials_do_match()
    {
        $client = Passport::client();

        $user = User::factory()->create([
            'email' => $email = '[email protected]',
            'password' => $password = '12345678'
        ]);

        $body = [
            'client_id' => $client->id,
            'client_secret' => $client->secret,
            'username' => $email,
            'password' => $password
        ];

        $this->json('POST', '/oauth/token', $body)
            ->assertStatus(200);
    }

Here $client = Passport::client() return null. I didn't find any solution to get oauth client credentials.

Answer 1

Actually $client = Passport::client(); doesn't return client. I have found a solution to create client from LoginTest.

$user = User::factory()->create([
            'email' => $email = '[email protected]',
            'password' => $password = '12345678'
        ]);

$client = ClientFactory::new()->asPasswordClient()->create(['user_id' => $user->id]);

        $response = $this->json(
            'POST', '/oauth/token',
            [
                'grant_type' => 'password',
                'client_id' => $client->id,
                'client_secret' => $client->secret,
                'username' => $user->email,
                'password' => $password,
            ]
        )
        ->assertStatus(200);