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phpunit标注-runInSeparateProcess

发布时间：2021-10-07 18:58:18编辑：雪饮阅读（）

 runInSeparateProcess标注用于将一个测试方法可以独立运行在一个进程中。

首先看看没有runInSeparateProcess标注情况下每个测试方法所获取的进程id是如何？
MyTest.php：
<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class MyTest extends TestCase
{
    public function testInSeparateProcess(): void
    {
      //posix_getpid()用于获取当前进程id
       var_dump("\r\n".posix_getpid()."\r\n");
    }
    public function testTwo(): void
    {
        var_dump("\r\n".posix_getpid()."\r\n");
    }
}
运行结果：
[root@localhost ~]# /usr/local/php734/bin/php /usr/local/phpunit-9.5.8.phar /usr/local/organizing/tests/MyTest.php
PHPUnit 9.5.8 by Sebastian Bergmann and contributors.
 
Rstring(8) "
4368
"
R                                                                  2 / 2 (100%)string(8) "
4368
"
 
 
Time: 00:00, Memory: 18.00 MB
 
There were 2 risky tests:
 
1) MyTest::testInSeparateProcess
This test did not perform any assertions
 
/usr/local/organizing/tests/MyTest.php:6
 
2) MyTest::testTwo
This test did not perform any assertions
 
/usr/local/organizing/tests/MyTest.php:11
 
OK, but incomplete, skipped, or risky tests!
Tests: 2, Assertions: 0, Risky: 2.
可以看到两个测试方法获取到的当前进程id都是4368。
接下来再看看有runInSeparateProcess标注时候每个测试方法获取到的进程id是如何？
MyTest2.php：

<?php declare(strict_types=1);
use PHPUnit\Framework\TestCase;

final class MyTest2 extends TestCase
{
    /**
     * @runInSeparateProcess
     */
    public function testInSeparateProcess(): void
    {
        var_dump("\r\n".posix_getpid()."\r\n");
    }
    /**
     * @runInSeparateProcess
     */
    public function testTwo(): void
    {
        var_dump("\r\n".posix_getpid()."\r\n");
    }
}

运行结果：

[root@localhost ~]# /usr/local/php734/bin/php /usr/local/phpunit-9.5.8.phar /usr/local/organizing/tests/MyTest2.php
PHPUnit 9.5.8 by Sebastian Bergmann and contributors.
 
Rstring(8) "
5272
"
R                                                                  2 / 2 (100%)string(8) "
5273
"
 
 
Time: 00:00.178, Memory: 18.00 MB
 
There were 2 risky tests:
 
1) MyTest2::testInSeparateProcess
This test did not perform any assertions
 
/usr/local/organizing/tests/MyTest2.php:9
 
2) MyTest2::testTwo
This test did not perform any assertions
 
/usr/local/organizing/tests/MyTest2.php:16
 
OK, but incomplete, skipped, or risky tests!
Tests: 2, Assertions: 0, Risky: 2.
这次每个测试方法获取到的当前进程id都是不同的。这就是runInSeparateProcess标注实现了每个测试方法运行于一个独立的进程中。
补充：posix_getpid方法在windows上面不可用。要在linux上面才能使用。