PHPUnit | CodeCalm

CLI to working directory
Install PHPUnit:
```
composer require --dev phpunit/phpunit
```
Create a "tests" directory in the project root
Create test class "EqualsTest.php":

use PHPUnit\Framework\TestCase;

class EqualsTest extends TestCase
{
	public function testEquals()
	{
		$this->assertEquals('string1', 'string1');
	}
}

Run all tests in the "tests" directory:

vendor\bin\phpunit tests

Result:

PHPUnit 9.6.16 by Sebastian Bergmann and contributors.

.                                                                   1 / 1 (100%)

Time: 00:00.011, Memory: 4.00 MB

OK (1 test, 1 assertion)