How to use Codeception in PHP programming?

Using Codeception in PHP programming is a very convenient testing framework. Codeception can provide us with many different types of tests, such as functional tests, unit tests, end-to-end tests, and more. Here's how to write tests using Codeception.

1. First, you need to install Codeception. Can be installed via Composer. Add the following code in the composer.json file in the project root directory:

"require-dev": {
"codeception/codeception": "*"
}

Then run the following command in the terminal to install Codeception:

composer install

2. Create in the project A test suite:

Codeception uses test suites to organize tests. A new test suite can be created with the following command:

vendor/bin/codecept bootstrap

This will create a tests directory and generate the necessary configuration files and test code structure.

3. Writing tests:

Codeception can write tests in a variety of ways. Here are some examples:

Functional tests:

<?php
$I = new AcceptanceTester($scenario);
$I->wantTo('access the home page');
$I->amOnPage('/');
$I->see('Welcome to my website!');
?>

Unit tests:

<?php
class ExampleTest extends CodeceptionTestUnit
{
    /**
     * @var UnitTester
     */
    protected $tester;

    // tests
    public function testSomeFeature()
    {
        //...
    }
}
?>

End-to-end tests:

<?php
class ExampleCest
{
    public function _before(AcceptanceTester $I)
    {
        //...
    }

    public function _after(AcceptanceTester $I)
    {
        //...
    }

    // tests
    public function tryToTest(AcceptanceTester $I)
    {
        //...
    }
}
?>

4. Running tests:

You can use the following command to run tests:

vendor/bin/codecept run

This will run all tests in the test suite.

Summary:

Using Codeception can easily write various types of tests, allowing us to develop and test code faster. Codeception also supports a variety of plug-ins and extensions to meet more testing needs.

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