7.5.7 class \Failure not found during class teardown exception

[rtek]

Q	A
PHPUnit version	7.5.7
PHP version	7.1.19
Installation Method	Composer

Throwing an exception from tearDownAfterClass results in fatal error:

<?php

class Bug extends \PHPUnit\Framework\TestCase
{
    static public function tearDownAfterClass()
    {
        throw new \Exception('bug');
    }

    public function testBug()
    {
        $this->fail();
    }
}

$ vendor/bin/phpunit tests/Bug.php  --debug --verbose
PHPUnit 7.5.7 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.1.19 with Xdebug 2.5.3
Configuration: phpunit.xml.dist

Test 'Bug::testBug' started
Test 'Bug::testBug' ended
PHP Fatal error:  Uncaught Error: Class 'Failure' not found in vendor\phpunit\phpunit\src\Framework\TestSuite.php:761
Stack trace:
#0 vendor\phpunit\phpunit\src\TextUI\TestRunner.php(641): PHPUnit\Framework\TestSuite->run(Object(PHPUnit\Framework\TestResult))
#1 vendor\phpunit\phpunit\src\TextUI\Command.php(206): PHPUnit\TextUI\TestRunner->doRun(Object(PHPUnit\Framework\TestSuite), Array, true)
#2 vendor\phpunit\phpunit\src\TextUI\Command.php(162): PHPUnit\TextUI\Command->run(Array, true)
#3 vendor\phpunit\phpunit\phpunit(61): PHPUnit\TextUI\Command::main()
#4 {main}
thrown in vendor\phpunit\phpunit\src\Framework\TestSuite.php on line 761

Fatal error: Uncaught Error: Class 'Failure' not found in vendor\phpunit\phpunit\src\Framework\TestSuite.php on line 761

Error: Class 'Failure' not found in vendor\phpunit\phpunit\src\Framework\TestSuite.php on line 761

Call Stack:
0.0000     368768   1. {main}() vendor\phpunit\phpunit\phpunit:0
0.0060    1162648   2. PHPUnit\TextUI\Command::main() vendor\phpunit\phpunit\phpunit:61
0.0060    1171440   3. PHPUnit\TextUI\Command->run() vendor\phpunit\phpunit\src\TextUI\Command.php:162
0.0160    2951704   4. PHPUnit\TextUI\TestRunner->doRun() vendor\phpunit\phpunit\src\TextUI\Command.php:206
0.0250    3275088   5. PHPUnit\Framework\TestSuite->run() vendor\phpunit\phpunit\src\TextUI\TestRunner.php:641
--

[sebastianbergmann]

@epdenouden In 96c1264, you added $test = new \Failure('tearDownAfterClass');.

\Failure is not part of PHPUnit's production code but rather part of its test suite's fixture. This is why the tests for PHPUnit's own test suite work (because \Failure is available then). When PHPUnit's own test suite's fixture is not available, which, obviously ;-), is the default case, then \Failure does not exist.

[sebastianbergmann]

@epdenouden Can you take care of this? If not, I can look into it (but would first have to dig into the changes you made there).

[epdenouden]

\Failure is not part of PHPUnit's production code but rather part of its test suite's fixture.

It was the first thing I thought when I saw the bug, as I did get confused looking for the right way to do this. Will check the 'synthetic error' mechanism again or find some other way to inject a placeholder test.

@rtek Thanks for the detailed report! As @sebastianbergmann mentions, this wouldn't have been much harder to find otherwise and I completely overlooked it the first time around.