Testing de modulos PrestaShop — PHPUnit y Behat

mymodule/
├── src/
│   └── Service/
│       └── PriceCalculator.php
├── tests/
│   ├── Unit/
│   │   └── Service/
│   │       └── PriceCalculatorTest.php
│   ├── Integration/
│   │   └── Repository/
│   │       └── ItemRepositoryTest.php
│   └── bootstrap.php           ← carga el autoloader
├── composer.json
└── phpunit.xml

<?php

declare(strict_types=1);

namespace MyModule\Tests\Unit\Service;

use MyModule\Service\PriceCalculator;
use PHPUnit\Framework\TestCase;

class PriceCalculatorTest extends TestCase
{
    private PriceCalculator $calculator;

    protected function setUp(): void
    {
        $this->calculator = new PriceCalculator(0.21); // IVA 21%
    }

    public function testCalculatePriceWithTax(): void
    {
        $result = $this->calculator->withTax(100.0);
        $this->assertEqualsWithDelta(121.0, $result, 0.001);
    }

    public function testCalculatePriceWithDiscount(): void
    {
        $result = $this->calculator->withDiscount(100.0, 10); // 10% dto
        $this->assertEqualsWithDelta(90.0, $result, 0.001);
    }

    /** @dataProvider priceProvider */
    public function testCalculateVariousPrices(float $base, float $tax, float $expected): void
    {
        $calc   = new PriceCalculator($tax);
        $result = $calc->withTax($base);
        $this->assertEqualsWithDelta($expected, $result, 0.001);
    }

    public static function priceProvider(): array
    {
        return [
            'IVA 21%' => [100.0, 0.21, 121.0],
            'IVA 10%' => [50.0,  0.10, 55.0],
            'Sin IVA' => [75.0,  0.00, 75.0],
        ];
    }
}

<?php

declare(strict_types=1);

namespace MyModule\Tests\Unit;

use PHPUnit\Framework\TestCase;

class ModuleWithContextTest extends TestCase
{
    protected function setUp(): void
    {
        // ── Mockear Configuration ──
        // Requiere un stub o una clase fake si Configuration no tiene interface
        // Opcion 1: usar la clase real con una BD de test
        // Opcion 2: inyectar Configuration como dependencia y mockearla

        // ── Mockear Context ──
        $context           = $this->createMock(\Context::class);
        $context->language = $this->createMock(\Language::class);
        $context->language->id = 1;
        $context->currency = $this->createMock(\Currency::class);
        $context->currency->iso_code = 'EUR';
        $context->shop     = $this->createMock(\Shop::class);
        $context->shop->id = 1;

        // Asignar el mock al singleton
        \Context::setInstanceForTesting($context); // solo disponible en PS 8.1+
    }

    // ── Alternativa para PS < 8.1: heredar de un TestCase base del core ──
    // use PrestaShop\PrestaShop\Tests\Unit\Core\UnitTestCase;
}

<?php

declare(strict_types=1);

namespace MyModule\Tests\Unit\Service;

use Doctrine\ORM\EntityManagerInterface;
use MyModule\Entity\MyItem;
use MyModule\Repository\MyItemRepository;
use MyModule\Service\ItemService;
use PHPUnit\Framework\TestCase;

class ItemServiceTest extends TestCase
{
    public function testFindActiveItems(): void
    {
        // Crear mocks de las dependencias
        $repository = $this->createMock(MyItemRepository::class);
        $em         = $this->createMock(EntityManagerInterface::class);

        // Configurar comportamiento del mock
        $item1 = new MyItem();
        $repository->expects($this->once())
            ->method('findBy')
            ->with(['active' => true])
            ->willReturn([$item1]);

        $em->expects($this->once())
            ->method('getRepository')
            ->with(MyItem::class)
            ->willReturn($repository);

        // Testear el servicio
        $service = new ItemService($em);
        $result  = $service->getActiveItems();

        $this->assertCount(1, $result);
        $this->assertSame($item1, $result[0]);
    }
}

{
  "name": "myvendor/mymodule",
  "type": "prestashop-module",
  "require": {
    "php": ">=7.4"
  },
  "require-dev": {
    "phpunit/phpunit": "^9.5 || ^10.0",
    "phpstan/phpstan": "^1.0"
  },
  "autoload": {
    "psr-4": {
      "MyModule\\": "src/"
    }
  },
  "autoload-dev": {
    "psr-4": {
      "MyModule\\Tests\\": "tests/"
    }
  },
  "scripts": {
    "test": "vendor/bin/phpunit",
    "phpstan": "vendor/bin/phpstan analyse src --level=5"
  }
}

<?xml version="1.0" encoding="UTF-8"?>
<phpunit xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:noNamespaceSchemaLocation="vendor/phpunit/phpunit/phpunit.xsd"
         bootstrap="tests/bootstrap.php"
         colors="true">
    <testsuites>
        <testsuite name="Unit">
            <directory>tests/Unit</directory>
        </testsuite>
        <testsuite name="Integration">
            <directory>tests/Integration</directory>
        </testsuite>
    </testsuites>
    <coverage>
        <include>
            <directory suffix=".php">src</directory>
        </include>
    </coverage>
</phpunit>