Testing
Take a look inside the PHP course and see what professional testing looks like!
Introduction to Unit Testing
Unit testing is a fundamental part of programming in PHP. It involves checking whether individual parts of the code work correctly before they are combined into a whole. Thanks to unit tests, developers can quickly detect and fix bugs, which significantly increases the stability and quality of the code.
Unit tests are especially useful in large projects, where every code change can potentially introduce new bugs. My PHP course is organized so that at the end of each chapter you can see its unit tests.
PHPUnit – The most popular tool for PHP testing
Testing
PHPUnit – the standard for testing in PHP
PHPUnit is the de facto standard for unit testing in PHP, widely used by developers worldwide. It is a powerful and versatile tool that enables fast bug detection and ensures code stability and reliability.
Support for TDD and various test types
Thanks to its flexibility, PHPUnit supports component testing, object mocking, and generating code coverage reports. The tool aligns with TDD (Test-Driven Development), promoting better workflow and higher project quality.
An ideal solution for large projects
PHPUnit supports unit, integration, and functional tests, which significantly simplifies the maintenance and development of PHP applications—especially large and complex ones. Each new release brings many improvements—from modern assertions and better error reporting to compatibility with current PHP versions.
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TDD compatibility
- You can write tests before the code.
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Unit and integration tests
- Supports various types of tests.
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Mocking and code coverage
- Flexible tools for component testing.
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Efficient testing
- Nested tests, dynamic mocks, parallel tests.
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CI/CD integration
- Compatibility with GitHub Actions, GitLab CI, Jenkins.
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Source code browser with practical examples
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Download option in PDF/EPUB/Markdown formats
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Option to pass an exam and receive a certificate
Price: $36.58
Frequently asked questions about testing in PHP
FAQ
Example test on a simulated MySQL database
Testing
This test verifies the correctness of running migrations on a MySQL database. Because the database is mocked, the time needed to execute this test is very short. Testing interactions with the database is crucial to ensure the application correctly processes and manipulates data.
<?php
namespace Tests\DBAL\Migrations;
use DJWeb\Framework\DBAL\Contracts\Migrations\MigrationRepositoryContract;
use DJWeb\Framework\DBAL\Contracts\Schema\SchemaContract;
use DJWeb\Framework\DBAL\Migrations\Migration;
use DJWeb\Framework\DBAL\Migrations\MigrationExecutor;
use DJWeb\Framework\DBAL\Migrations\MigrationResolver;
use PHPUnit\Framework\Attributes\DataProvider;
use PHPUnit\Framework\TestCase;
class MigrationExecutorTest extends TestCase
{
private SchemaContract $schema;
private MigrationRepositoryContract $repository;
private MigrationResolver $resolver;
private MigrationExecutor $executor;
public static function migrationProvider(): array
{
return [
'up' => ['up'],
'down' => ['down'],
];
}
#[DataProvider('migrationProvider')]
public function testExecuteMigrations(string $method): void
{
$migration = $this->createMock(Migration::class);
$migration->expects($this->once())->method('withSchema')->with(
$this->schema
);
$migration->expects($this->once())->method($method);
$this->resolver->expects($this->once())
->method('resolve')
->with('migration1')
->willReturn($migration);
$result = $this->executor->executeMigrations(['migration1'],
$method,
false);
$this->assertEquals(['migration1'], $result);
}
}