Integration Testing
Integration testing assesses the interactions between various components or modules of the application. This approach ensures that different parts of the system work harmoniously when integrated, detecting any compatibility or communication issues. Integration testing checks interactions between components or modules to ensure they work together correctly. You can use mock objects to simulate external dependencies. Use getMockBuilder or createMock to create mocks.
Example: This example shows the Integration Testing.
<?php
require_once 'PaymentGateway.php';
require_once 'PaymentProcessor.php';
use PHPUnit\Framework\TestCase;
class PaymentProcessingIntegrationTest extends TestCase {
public function testPaymentProcessingSuccess() {
$mockGateway = $this->createMock
(PaymentGateway::class);
$mockGateway->method('processPayment')
->willReturn(true);
$processor = new PaymentProcessor($mockGateway);
$processed = $processor->processPayment(100.00,
'visa');
$this->assertTrue($processed);
}
public function testPaymentProcessingFailure() {
$mockGateway = $this->createMock
(PaymentGateway::class);
$mockGateway->method('processPayment')
->willReturn(false);
$processor = new PaymentProcessor($mockGateway);
$processed = $processor->processPayment(50.00, 'amex');
$this->assertFalse($processed);
}
}
<?
class PaymentProcessor {
protected $gateway;
public function __construct(PaymentGateway $gateway) {
$this->gateway = $gateway;
}
public function processPayment($amount, $cardType) {
return $this->gateway->processPayment($amount,
$cardType);
}
}
<?
class PaymentGateway {
public function processPayment($amount, $cardType) {
// Simulate payment processing logic
if ($amount > 0 && in_array($cardType, ['visa',
'mastercard'])) {
return true;
} else {
return false;
}
}
}
Output:
How to Test PHP Code With phpUnit?
Testing PHP code is a critical aspect of software development, ensuring that applications function as intended and maintain their integrity over time. PHPUnit stands out as a premier testing framework for PHP, empowering developers to create comprehensive test suites and validate their code effectively. This article serves as a thorough guide to leveraging PHPUnit for testing PHP code.
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