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Testing environment setup
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======================
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Yii 2 has officially maintained integration with [`Codeception`](https://github.com/Codeception/Codeception) testing
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framework that allows you to create the following test types:
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- [Unit testing](test-unit.md) - verifies that a single unit of code is working as expected;
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- [Functional testing](test-functional.md) - verifies scenarios from a user's perspective via browser emulation;
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- [Acceptance testing](test-acceptance.md) - verifies scenarios from a user's perspective in a browser.
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Yii provides ready to use test sets for all three test types in both
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[`yii2-basic`](https://github.com/yiisoft/yii2-app-basic) and
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[`yii2-advanced`](https://github.com/yiisoft/yii2-app-advanced) project templates.
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Codeception comes preinstalled with both basic and advanced project templates.
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In case you are not using one of these templates, Codeception could be installed
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by issuing the following console commands:
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```
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composer require codeception/codeception
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composer require codeception/specify
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composer require codeception/verify
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```
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