could not find driver

laravel项目测试报错如下

λ vendor\bin\phpunit
PHPUnit 5.7.27 by Sebastian Bergmann and contributors.

.E.                                                                 3 / 3 (100%)

Time: 3.94 seconds, Memory: 16.00MB

There was 1 error:

1) Tests\Feature\ThreadsTest::test_user_can_browse_threads
Illuminate\Database\QueryException: could not find driver (SQL: select * from sqlite_master where type = 'table' and name = migrations)

发现缺少驱动，然后检查测试配置文件

   <php>
        <env name="APP_ENV" value="testing"/>
        <env name="DB_CONNECTION" value="sqlite"/>
        <env name="DB_DATABASE" value=":memory:"/>
        <env name="CACHE_DRIVER" value="array"/>
        <env name="SESSION_DRIVER" value="array"/>
        <env name="QUEUE_DRIVER" value="sync"/>
        <env name="MAIL_DRIVER" value="array" />
    </php>

果然，发现pdo_sqlite扩展未打开。更改配置ok！

λ vendor\bin\phpunit
PHPUnit 5.7.27 by Sebastian Bergmann and contributors.

.F.                                                                 3 / 3 (100%)

Time: 998 ms, Memory: 16.00MB

There was 1 failure:

1) Tests\Feature\ThreadsTest::test_user_can_browse_threads
Failed asserting that 200 is true.

D:\laragon323\www\forum\tests\Feature\ThreadsTest.php:20

FAILURES!
Tests: 3, Assertions: 3, Failures: 1.