Performance Symfony 2.8中的单元测试运行速度比实际速度慢数百倍

我将单元测试添加到以前从未有过的旧Symfony 2.8生产代码库中，以便将Symfony升级到维护版本。我们还将升级PHP，因为我们目前运行的是PHP5.5，它也不再维护，但如果在PHP7.3下运行，Symfony2.8会抛出太多错误

尽管我能够让单元测试在PHPUnit和Codeception（由PHPUnit提供支持）下运行，但它们运行得非常慢

例如：

SimpleTest.php codeception.yml Codeception运行输出 此测试应始终在

0.00s

的时间内运行，总时间应小于

5秒

，而不是

20秒

或更长

如何在PHP5.5中的Symfony2.8下加速单元测试

---

我已经找到了运行PHP5.5的问题，这是目前的一个需求。我已经用PHP5.5创建了一个香草Symfony2.8安装，没有代码，测试速度仍然非常慢。当我切换到PHP7.3时，测试速度与我过去预期的一样快，但是，我们的项目还没有在PHP7.3下运行，因为它会导致致命错误

D:\server\Apache24\htdocs\symfony-2.8>php55 vendor\codeception\codeception\codecept run unit
Codeception PHP Testing Framework v2.3.9
Powered by PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Unit Tests (1) --------------------------------------------------
+ SimpleTest: Should do nothing (0.20s)
-----------------------------------------------------------------

Time: 21.84 seconds, Memory: 14.50MB

OK (1 test, 1 assertion)

D:\server\Apache24\htdocs\symfony-2.8>php73 vendor\codeception\codeception\codecept run unit
Codeception PHP Testing Framework v2.3.9
Powered by PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Unit Tests (1) --------------------------------------------------
+ SimpleTest: Should do nothing (0.00s)
-----------------------------------------------------------------

Time: 264 ms, Memory: 10.00MB

OK (1 test, 1 assertion)

---

您是否尝试禁用覆盖范围？每当我运行覆盖率测试时，总时间会增加20秒。这可能会使这个单一测试的速度减慢很多。@DirkScholten两者都是在没有覆盖的情况下运行的。覆盖率将6分钟的跑步变为1小时的跑步。您是否尝试禁用覆盖率？每当我运行覆盖率测试时，总时间会增加20秒。这可能会使这个单一测试的速度减慢很多。@DirkScholten两者都是在没有覆盖的情况下运行的。覆盖范围将6分钟的跑步变成了一小时的跑步。

<?xml version="1.0" encoding="UTF-8"?>
<phpunit bootstrap="vendor/autoload.php" colors="true">
    <php>
        <server name="KERNEL_DIR" value="app/"/>
    </php>
    <testsuites>
        <testsuite name="Application Test Suite">
            <directory>tests/unit</directory>
        </testsuite>
    </testsuites>
</phpunit>

PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Runtime:        PHP 5.5.9 with Xdebug 2.5.5

.

Time: 19.52 seconds, Memory: 6.00MB

OK (1 test, 1 assertion)

paths:
    tests: tests
    output: tests/_output
    data: tests/_data
    support: tests/_support
    envs: tests/_envs
actor_suffix: Tester
extensions:
    enabled:
        - Codeception\Extension\RunFailed
coverage:
    enabled: true
    include:
        - src/*
    low_limit: 50
    high_limit: 100

Codeception PHP Testing Framework v2.3.9
Powered by PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Unit Tests (1) --------------------------------------------------
Testing unit
+ SimpleTest: Should do nothing (0.29s)
-----------------------------------------------------------------

Time: 30.96 seconds, Memory: 23.25MB

OK (1 test, 1 assertion)

D:\server\Apache24\htdocs\symfony-2.8>php55 vendor\codeception\codeception\codecept run unit
Codeception PHP Testing Framework v2.3.9
Powered by PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Unit Tests (1) --------------------------------------------------
+ SimpleTest: Should do nothing (0.20s)
-----------------------------------------------------------------

Time: 21.84 seconds, Memory: 14.50MB

OK (1 test, 1 assertion)

D:\server\Apache24\htdocs\symfony-2.8>php73 vendor\codeception\codeception\codecept run unit
Codeception PHP Testing Framework v2.3.9
Powered by PHPUnit 4.8.36 by Sebastian Bergmann and contributors.

Unit Tests (1) --------------------------------------------------
+ SimpleTest: Should do nothing (0.00s)
-----------------------------------------------------------------

Time: 264 ms, Memory: 10.00MB

OK (1 test, 1 assertion)