yii2项目如何写单元测试

Question

我阅读了我找到的所有文档并设置了 codeception 来为 yii2 应用程序编写单元测试。

我的项目使用 mongodb 作为数据库，当我运行我的单元测试来测试我的模型的保存操作时，我发现 db 组件未找到。

这是真的，因为我正在使用 mongodb 并且 sql 不需要 db。无论如何，当我更改我的设置以将 mongodb 数据库设置重命名为 db 并仍在使用 mongodb 连接设置时，我看到错误，这意味着 yii2 正在尝试使用 SQL activerecord 方法。

我的测试class：

namespace common\tests;

use common\models\Developer;
use common\tests\fixtures\DeveloperFixture;
use Faker\Factory;

class DeveloperTest extends \Codeception\Test\Unit
{
    /**
     * @var \common\tests\UnitTester
     */
    protected $tester;

    /**
     * @return array
     */
    public function _fixtures()
    {
        return [
            'user' => [
                'class' => DeveloperFixture::class,
                'dataFile' => codecept_data_dir() . 'developer.php'
            ]
        ];
    }
    /**
     * Test to saving user in database.
     * We are using Factory object to create dynamic test cases.
     */
    public function testSaving()
    {
        // use the factory to create a Faker\Generator instance
        $faker = Factory::create();

        $developer = new Developer([
            'name' => $faker->name,
            'description' => $faker->sentences
        ]);

        $this->assertTrue($developer->save(), 'Developer object saved into database.');
    }


    protected function _before()
    {
    }

    protected function _after()
    {
    }
}

我的commont/config/test-local.php

<?php
return yii\helpers\ArrayHelper::merge(
    require __DIR__ . '/main.php',
    require __DIR__ . '/main-local.php',
    require __DIR__ . '/test.php',
    [
        'components' => [
            'mongodb' => require_once ('conf.d/test-db.php')
        ],
    ]
);

我的common/config/conf.d/test-db.php

<?php
return
    [
        'class' => '\yii\mongodb\Connection',
        'dsn' => 'mongodb://mongodb/mytestdb', //Using docker container
    ];

我的灯具class:

<?php

namespace common\tests\fixtures;

use yii\mongodb\ActiveFixture;

/**
 * Class Developer
 * Active fixture for using Developer model.
 *
 * @package common\tests\fixtures
 */
class DeveloperFixture extends ActiveFixture
{
    public $modelClass = \common\models\Developer::class;
}

之后我运行 vendor/bin/codecept -c core/common run unit models/DeveloperTest 我看到以下错误：

---------
1) DeveloperTest: Saving
 Test  tests/unit/models/DeveloperTest.php:testSaving

  [yii\base\InvalidConfigException] Failed to instantiate component or class "db".  

#1  /app/vendor/yiisoft/yii2/di/Instance.php:139
#2  /app/vendor/yiisoft/yii2/di/Container.php:428
#3  /app/vendor/yiisoft/yii2/di/Container.php:364
#4  /app/vendor/yiisoft/yii2/di/Container.php:156
#5  /app/vendor/yiisoft/yii2/di/Instance.php:167
#6  /app/vendor/yiisoft/yii2/di/Instance.php:137
#7  /app/vendor/yiisoft/yii2/test/DbFixture.php:41
#8  /app/vendor/yiisoft/yii2/base/BaseObject.php:109
#9  yii\base\BaseObject->__construct
#10 /app/vendor/yiisoft/yii2/di/Container.php:375
#1  /app/vendor/yiisoft/yii2/di/Container.php:428
#2  /app/vendor/yiisoft/yii2/di/Container.php:364
#3  /app/vendor/yiisoft/yii2/di/Container.php:156
#4  /app/vendor/yiisoft/yii2/di/Instance.php:167
#5  /app/vendor/yiisoft/yii2/di/Instance.php:137
#6  /app/vendor/yiisoft/yii2/test/DbFixture.php:41
#7  /app/vendor/yiisoft/yii2/base/BaseObject.php:109
#8  yii\base\BaseObject->__construct
#9  /app/vendor/yiisoft/yii2/di/Container.php:375
#10 /app/vendor/yiisoft/yii2/di/Container.php:156

--

There was 1 failure:

---------
1) DeveloperTest: Saving
 Test  tests/unit/models/DeveloperTest.php:testSaving
Developer object saved into database.
Failed asserting that false is true.
#1  /app/core/common/tests/unit/models/DeveloperTest.php:42

当我将 test-local.php 中的 mongodb 更改为 db 时，我看到以下错误日志：

---------
1) DeveloperTest: Saving
 Test  tests/unit/models/DeveloperTest.php:testSaving

  [yii\base\UnknownMethodException] Calling unknown method: yii\mongodb\Command::checkIntegrity()  

#1  /app/vendor/yiisoft/yii2/base/BaseObject.php:222
#2  /app/vendor/yiisoft/yii2/test/InitDbFixture.php:96
#3  /app/vendor/yiisoft/yii2/test/InitDbFixture.php:78
#4  /app/vendor/yiisoft/yii2/test/FixtureTrait.php:117
#5  /app/vendor/symfony/event-dispatcher/EventDispatcher.php:212
#6  /app/vendor/symfony/event-dispatcher/EventDispatcher.php:44

--

There was 1 failure:

---------
1) DeveloperTest: Saving
 Test  tests/unit/models/DeveloperTest.php:testSaving
Developer object saved into database.
Failed asserting that false is true.
#1  /app/core/common/tests/unit/models/DeveloperTest.php:42

ERRORS!
Tests: 1, Assertions: 1, Errors: 1, Failures: 1.

谁能帮帮我？

Answer 1

这是代码接收框架模块核心中的错误。您可以在 common/config/test-local.php:

中复制数据库连接

    'db' => [
        'class' => yii\mongodb\Connection::class,
        'dsn' => 'mongodb://localhost:27017/app_test_db',
    ],
    'mongodb' => [
        'class' => yii\mongodb\Connection::class,
        'dsn' => 'mongodb://localhost:27017/app_test_db',
    ],

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