在 Laravel 中使用 RefreshDatabase 时尝试访问 null 类型值的数组偏移量

Question

我正在全新安装的 Laravel 6.15（使用 Spark 9）中编写测试。我的 PHP 版本是 PHP 7.4.2。我的测试环境是 MacOS 上的 Laravel Valet。

我面临一个问题，每当我使用 RefreshDatabase trait 作为测试的一部分时，所有测试都会失败，因为尝试访问类型为 null 的值的数组偏移量错误消息。

从阅读建议似乎是在遇到此错误时降级到 PHP 7.3，但是官方文档中没有提到不支持 PHP 7.4 - 还有其他方法可以解决错误吗？

即使特征对 Laravel 示例测试感兴趣，它也会触发：

namespace Tests\Feature;

use Illuminate\Foundation\Testing\RefreshDatabase;
use Tests\TestCase;

class ExampleTest extends TestCase
{

    Use RefreshDatabase;

    /**
     * A basic test example.
     *
     * @return void
     */
    public function testBasicTest()
    {
        $response = $this->get('/');

        $response->assertStatus(200);
    }
}

给

PHPUnit 8.5.2 by Sebastian Bergmann and contributors.

.EE                                                                 3 / 3 (100%)

Time: 212 ms, Memory: 22.00 MB

There were 2 errors:

1) Tests\Feature\ExampleTest::testBasicTest
ErrorException: Trying to access array offset on value of type null

/Users/rory/sites/landlord/vendor/laravel/telescope/src/Watchers/QueryWatcher.php:46
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:369
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Events/Dispatcher.php:218
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Connection.php:833
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Connection.php:687
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Connection.php:640
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Connection.php:338
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Connection.php:309
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Schema/Builder.php:75
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Migrations/DatabaseMigrationRepository.php:169
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Migrations/Migrator.php:590
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Console/Migrations/MigrateCommand.php:91
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Database/Console/Migrations/MigrateCommand.php:63
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php:32
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Container/Util.php:36
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php:90
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Container/BoundMethod.php:34
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Container/Container.php:590
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Console/Command.php:134
/Users/rory/sites/landlord/vendor/symfony/console/Command/Command.php:255
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Console/Command.php:121
/Users/rory/sites/landlord/vendor/symfony/console/Application.php:1012
/Users/rory/sites/landlord/vendor/symfony/console/Application.php:272
/Users/rory/sites/landlord/vendor/symfony/console/Application.php:148
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Console/Application.php:93
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Console/Application.php:185
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Console/Kernel.php:273
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/PendingCommand.php:139
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/PendingCommand.php:238
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/Concerns/InteractsWithConsole.php:56
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/RefreshDatabase.php:40
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/RefreshDatabase.php:17
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php:115
/Users/rory/sites/landlord/vendor/laravel/framework/src/Illuminate/Foundation/Testing/TestCase.php:82

phpunit.xml

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="./vendor/phpunit/phpunit/phpunit.xsd"
         backupGlobals="false"
         backupStaticAttributes="false"
         bootstrap="vendor/autoload.php"
         colors="true"
         convertErrorsToExceptions="true"
         convertNoticesToExceptions="true"
         convertWarningsToExceptions="true"
         processIsolation="false"
         stopOnFailure="false">
    <testsuites>
        <testsuite name="Unit">
            <directory suffix="Test.php">./tests/Unit</directory>
        </testsuite>

        <testsuite name="Feature">
            <directory suffix="Test.php">./tests/Feature</directory>
        </testsuite>
    </testsuites>
    <filter>
        <whitelist processUncoveredFilesFromWhitelist="true">
            <directory suffix=".php">./app</directory>
        </whitelist>
    </filter>
    <php>
        <server name="APP_ENV" value="testing"/>
        <server name="BCRYPT_ROUNDS" value="4"/>
        <server name="CACHE_DRIVER" value="array"/>
        <server name="DB_CONNECTION" value="sqlite"/>
        <server name="DB_DATABASE" value=":memory:"/>
        <server name="MAIL_DRIVER" value="array"/>
        <server name="QUEUE_CONNECTION" value="sync"/>
        <server name="SESSION_DRIVER" value="array"/>
    </php>
</phpunit>

Answer 1

我终于解决了这个问题——结果证明这与 Telescope 的安装和测试运行有关。

要解决此问题（和ReflectionException: Class env does not exist 相关问题），请将以下行添加到节点phpunit.xml之间的文件<php>中：

<env name="TELESCOPE_ENABLED" value="false"/>