InitDbFixture object cannot be overridden during FixturesStore initialization

[PoohOka]

Issue

There is an issue configuring component properties when the user does not use Yii2 default values during Codeception tests. The problem caused by using anonymous array value to register InitDbFixture [yii\test\InitDbFixture] component rather than using key-pair component registering.

The following attachment occurred from changing Yii default database component from db to something else.

Solution

During FixturesStore [Codeception\Lib\Connector\Yii2\FixturesStore] initialization, its globalFixtures() has InitDbFixture component registering as anonymous fixture value resulting to Yii unable to merge the fixtures array in FixtureTrait [yii\test\FixtureTrait::getFixtures()].

By changing its registration from the following

return [
    InitDbFixture::class
];

to

return [
    'initDbFixture' => [
        'class' => InitDbFixture::class,
    ],
];

This allows the user to override component InitDbFixture default values via _fixtures() in test case.

Result

Example of application using otherDbComponent to be main database component than Yii default db.

// in a Cest file
public function _fixtures()
{
    return [
        // This will be merged and overridden during initialization
        'initDbFixture' => [
            'class' => \yii\test\InitDbFixture::class,
            'db' => 'otherDbComponent',
        ],
        'user' => [
            'class' => UserFixture::class,
            'db' => 'otherDbComponent',
            'dataFile' => codecept_data_dir() . 'login_data.php'
        ]
    ];
}

[samdark]

Thanks!