Question

这似乎只发生在我的系统上。没有其他人可以重现它。如果错误消息太大（在我的情况下约为65k字节），则屏幕上不会打印任何内容。我在Windows 7上使用PHP 7.1.3，默认的php.ini（内存限制设置为8gb）和默认的PHPUnit 6.0.13配置。错误不会出现在prompt和powershell中。

<?php

use PHPUnit\Framework\Constraint\Constraint;
use PHPUnit\Framework\TestCase;

class MyConstraint extends Constraint
{
    protected $expected;

    function __construct($expected){
        parent::__construct();
        $this->expected = $expected;
    }

    protected function matches($actual){
        return false;
    }

    function failureDescription($other): string{
        return "desc";
    }

    function toString(){
        return "description";
    }

    function additionalFailureDescription($other): string{
        return str_repeat("x", 100000);
        // If set to a smaller dump, error will appear
        // some people I asked to try could dump one million
        // bytes without problems, while I can't print more
        // than about 50k
    }
}

class SomeTest extends TestCase
{
    function testBigDump(){
        TestCase::assertThat("irrelevant", new MyConstraint("irrelevant"));
    }
}

?>

这就是我在屏幕上看到的内容：

Sebastian Bergmann和贡献者的PHPUnit 6.0.13。

运行时：PHPDBG 7.1.3配置：..............

F 1/1（100％）

时间：361毫秒，内存：6.00MB

有1次失败：

1）SomeTest :: testBigDump
                             <------- Notice no error description here
FAILURES！测试：1，断言：1，失败：1。

你知道是什么原因引起的吗？提前谢谢。

Answer 1

您的配置中的某些内容正在通过phpdbg运行phpunit测试

我重新创建了此问题，尝试使用Windows 7 VM尽可能多地复制环境。

线索是转储中的Runtime: PHPDBG行。显然有关phpdbg运行时的东西会阻止大缓冲区正常工作。请参阅下面的输出，通过phpdbg.exe运行时的初始输出（缺少测试说明），然后通过php.exe运行（显然是截断的）：

C:\project>phpdbg -r phpunit-6.1.0.phar -v test.php
[Welcome to phpdbg, the interactive PHP debugger, v0.5.0]
To get help using phpdbg type "help" and press enter
[Please report bugs to <http://bugs.php.net/report.php>]
PHPUnit 6.1.0 by Sebastian Bergmann and contributors.

Runtime:       PHPDBG 7.1.4

F                                                                   1 / 1 (100%)


Time: 99 ms, Memory: 22.00MB

There was 1 failure:

1) SomeTest::testBigDump

FAILURES!
Tests: 1, Assertions: 1, Failures: 1.
[Script ended normally]

C:\project>php phpunit-6.1.0.phar test.php
PHPUnit 6.1.0 by Sebastian Bergmann and contributors.

F                                                                   1 / 1 (100%)


Time: 109 ms, Memory: 8.00MB

There was 1 failure:

1) SomeTest::testBigDump
Failed asserting that desc.
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----- Snip -----

什么可能导致PHPUnit不打印非常大的错误消息？

1 个答案: