在 Laravel 8 中运行多个 PHPUnit 测试时出错

Posted 2023-03-15

【中文标题】在 Laravel 8 中运行多个 PHPUnit 测试时出错

【英文标题】：Error when running multiple PHPUnit Tests in Laravel 8

【发布时间】：2021-02-02 01:59:54

【问题描述】：

当调用多个测试时，Laravel 8 项目中的单元测试会引发错误。 当我一次运行多个测试时，问题是导致我的测试失败。运行一批测试时，第一个测试按预期运行并通过，然后在尝试从默认 trait CreatesApplication 运行 createApplication() 函数时，所有后续测试都失败。我所有的测试都单独运行并通过了。

导致此错误：

• Tests\Feature\ProjectDashboardTest > dashboard returns200
   Error

  Call to a member function make() on bool

  at tests/CreatesApplication.php:19
     15▕     public function createApplication()
     16▕     
     17▕         $app = require_once __DIR__.'/../bootstrap/app.php';
     18▕
  ➜  19▕         $app->make(Kernel::class)->bootstrap();
     20▕
     21▕         return $app;
     22▕     
     23▕ 

当两个测试运行相同时会发生这种情况。

所以这段代码：

class DashboardTest extends TestCase


    public function testDashboardReturns200()
    
        $response = $this->get('/dashboard');
        $response->assertStatus(200);
    

    public function testDashboardReturns200V2()
    
        $response = $this->get('/dashboard');
        $response->assertStatus(200);
    

给出这个结果：

php artisan test ./tests/feature/DashboardTest.php

   FAIL  Tests\Feature\DashboardTest
  ✓ dashboard returns200
  ⨯ dashboard returns200 v2

  ---

  • Tests\Feature\DashboardTest > dashboard returns200 v2
   Error

  Call to a member function make() on bool

  at tests/CreatesApplication.php:19
     15▕     public function createApplication()
     16▕     
     17▕         $app = require_once __DIR__.'/../bootstrap/app.php';
     18▕
  ➜  19▕         $app->make(Kernel::class)->bootstrap();
     20▕
     21▕         return $app;
     22▕     
     23▕ 


  Tests:  1 failed, 1 passed
  Time:   4.02s

有我遗漏的修复吗？

编辑，按要求添加应用文件

<?php

/*
|--------------------------------------------------------------------------
| Create The Application
|--------------------------------------------------------------------------
|
| The first thing we will do is create a new Laravel application instance
| which serves as the "glue" for all the components of Laravel, and is
| the IoC container for the system binding all of the various parts.
|
*/

$app = new Illuminate\Foundation\Application(
    $_ENV['APP_BASE_PATH'] ?? dirname(__DIR__)
);

/*
|--------------------------------------------------------------------------
| Bind Important Interfaces
|--------------------------------------------------------------------------
|
| Next, we need to bind some important interfaces into the container so
| we will be able to resolve them when needed. The kernels serve the
| incoming requests to this application from both the web and CLI.
|
*/

$app->singleton(
    Illuminate\Contracts\Http\Kernel::class,
    App\Http\Kernel::class
);

$app->singleton(
    Illuminate\Contracts\Console\Kernel::class,
    App\Console\Kernel::class
);

$app->singleton(
    Illuminate\Contracts\Debug\ExceptionHandler::class,
    App\Exceptions\Handler::class
);

/*
|--------------------------------------------------------------------------
| Return The Application
|--------------------------------------------------------------------------
|
| This script returns the application instance. The instance is given to
| the calling script so we can separate the building of the instances
| from the actual running of the application and sending responses.
|
*/

return $app;

【问题讨论】：

你能显示你的 bootstrap/app.php 文件吗？ require_once 获取指定文件中存在的所有文本/代码/标记，并将其复制到使用包含语句的文件中。然后你的$app 是函数的返回给你一个true 因为包含可能是成功的。然后，当您尝试从布尔变量调用 make() 时，错误似乎是合乎逻辑的。

我已将应用文件添加到问题正文中。

如果你在var_dump($app)里面DashboardTest.php，它会显示什么？

第一次显示 $app 为 \Illuminate\Foundation\Application ，第二次测试显示 $app 为 true

如果将require_once 替换为require 会怎样？

【参考方案1】：

因为您运行require_once，该脚本不会再次加载，因此将返回一个布尔值。将require_once替换为require即可解决。