建立測試檔案

$ php artisan make:test ApiTest

tests\Feature\ApiTest.php

class ApiTest extends TestCase
{
    /**
     * 測試取得 token
     *
     * @return void
     */
    public function testGetToken()
    {
        $parameters = [
            'grant_type' => 'client_credentials',
            'client_id' => '3',
            'client_secret' => '2Ur6aIyJCZpAeuTwcWHyCq9YGYsPYwN23GDg4xJW',
        ];

        // 傳送參數
        $response = $this->call('POST', 'oauth/token', $parameters);

        $this->assertEquals(200, $response->getStatusCode());

        // 測試回傳欄位是否存在
        $data = json_decode($response->getContent(), true);
        $this->assertArrayHasKey('token_type', $data);
        $this->assertArrayHasKey('expires_in', $data);
        $this->assertArrayHasKey('access_token', $data);
    }
}

Unit test

$ vendor\bin\phpunit tests\Feature\ApiTest.php

Docs

參考來源

https://laracasts.com/discuss/channels/testing/how-to-test-json-structure-with-phpunit