Closes #4630

ChangeLog-9.5.md

@@ -2,6 +2,12 @@
 
 All notable changes of the PHPUnit 9.5 release series are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
 
+## [9.5.4] - 2021-MM-DD
+
+### Fixed
+
+* [#4630](https://github.com/sebastianbergmann/phpunit/issues/4630): Empty test case class causes error in TestDox XML logger
+
 ## [9.5.3] - 2021-03-17
 
 ### Fixed
@@ -35,6 +41,7 @@ All notable changes of the PHPUnit 9.5 release series are documented in this fil
 
 * [#4535](https://github.com/sebastianbergmann/phpunit/issues/4535): `getMockFromWsdl()` does not handle methods that do not have parameters correctly
 
+[9.5.4]: https://github.com/sebastianbergmann/phpunit/compare/9.5.3...9.5
 [9.5.3]: https://github.com/sebastianbergmann/phpunit/compare/9.5.2...9.5.3
 [9.5.2]: https://github.com/sebastianbergmann/phpunit/compare/9.5.1...9.5.2
 [9.5.1]: https://github.com/sebastianbergmann/phpunit/compare/9.5.0...9.5.1

src/Util/TestDox/XmlResultPrinter.php

@@ -22,6 +22,7 @@
 use PHPUnit\Framework\TestListener;
 use PHPUnit\Framework\TestSuite;
 use PHPUnit\Framework\Warning;
+use PHPUnit\Framework\WarningTestCase;
 use PHPUnit\Util\Printer;
 use PHPUnit\Util\Test as TestUtil;
 use ReflectionClass;
@@ -154,7 +155,7 @@ public function startTest(Test $test): void
      */
     public function endTest(Test $test, float $time): void
     {
-        if (!$test instanceof TestCase) {
+        if (!$test instanceof TestCase || $test instanceof WarningTestCase) {
             return;
         }
 

tests/end-to-end/regression/GitHub/4630.phpt

@@ -0,0 +1,30 @@
+--TEST--
+https://github.com/sebastianbergmann/phpunit/issues/4630
+--FILE--
+<?php declare(strict_types=1);
+
+$_SERVER['argv'][] = '--do-not-cache-result';
+$_SERVER['argv'][] = '--no-configuration';
+$_SERVER['argv'][] = '--testdox-xml';
+$_SERVER['argv'][] = 'php://stdout';
+$_SERVER['argv'][] = __DIR__ . '/4630/Issue4630Test.php';
+
+require __DIR__ . '/../../../bootstrap.php';
+
+PHPUnit\TextUI\Command::main();
+--EXPECTF--
+PHPUnit %s by Sebastian Bergmann and contributors.
+
+W                                                                   1 / 1 (100%)<?xml version="1.0" encoding="UTF-8"?>
+<tests/>
+
+
+Time: %s, Memory: %s
+
+There was 1 warning:
+
+1) Warning
+No tests found in class "PHPUnit\TestFixture\Issue4630Test".
+
+WARNINGS!
+Tests: 1, Assertions: 0, Warnings: 1.

tests/end-to-end/regression/GitHub/4630/Issue4630Test.php

@@ -0,0 +1,16 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of PHPUnit.
+ *
+ * (c) Sebastian Bergmann <sebastian@phpunit.de>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace PHPUnit\TestFixture;
+
+use PHPUnit\Framework\TestCase;
+
+final class Issue4630Test extends TestCase
+{
+}