PHPUnit 单元测试教程

一、官网下载对应 PHP 版本的代码库

https://phpunit.de/getting-started-with-phpunit.html

二、安装 PHPUnit 

官网提供了两种方法安装

1. PHP Archive (PHAR)

➜ wget -O phpunit https://phar.phpunit.de/phpunit-8.phar

➜ chmod +x phpunit

➜ ./phpunit --version
PHPUnit 8.0.0 by Sebastian Bergmann and contributors.

2. Composer

➜ composer require --dev phpunit/phpunit ^8

➜ ./vendor/bin/phpunit --version
PHPUnit 8.0.0 by Sebastian Bergmann and contributors.

三、使用 PHPUnit 进行测试，以下代码默认你是使用 Composer 安装的 PHPUnit

安装完成后在当前目录下添加文件 EmailTest.php，文件内容如下

<?php
declare(strict_types=1);

use PHPUnitFrameworkTestCase;

final class EmailTest extends TestCase
{
    public function testCanBeCreatedFromValidEmailAddress(): void
    {
        $this->assertInstanceOf(
            Email::class,
            Email::fromString('user@example.com')
        );
    }

    public function testCannotBeCreatedFromInvalidEmailAddress(): void
    {
        $this->expectException(InvalidArgumentException::class);

        Email::fromString('invalid');
    }

    public function testCanBeUsedAsString(): void
    {
        $this->assertEquals(
            'user@example.com',
            Email::fromString('user@example.com')
        );
    }
}

运行测试

➜ ./vendor/bin/phpunit --bootstrap vendor/autoload.php tests/EmailTest
PHPUnit 8.0.0 by Sebastian Bergmann and contributors.

...                                                                 3 / 3 (100%)

Time: 70 ms, Memory: 10.00MB

OK (3 tests, 3 assertions)