Closes #5493

Co-authored-by: Sebastian Bergmann <sb@sebastian-bergmann.de>
Co-authored-by: Arne Blankerts <Arne@Blankerts.de>

Author: sebastianbergmann

ChangeLog-10.3.md

@@ -8,6 +8,10 @@ All notable changes of the PHPUnit 10.3 release series are documented in this fi
 
 * The child processes used for process isolation now use temporary files to communicate their result to the parent process
 
+### Fixed
+
+* [#5493](https://github.com/sebastianbergmann/phpunit/issues/5493): Assertion failures during setup swallows test outcome
+
 ## [10.3.4] - 2023-09-12
 
 ### Changed

src/Framework/TestCase.php

@@ -671,6 +671,10 @@ final public function runBare(): void
                 $e->getMessage(),
             );
         } catch (AssertionError|AssertionFailedError $e) {
+            if (!$this->wasPrepared) {
+                $this->wasPrepared = true;
+            }
+
             $this->status = TestStatus::failure($e->getMessage());
 
             $emitter->testFailed(

tests/end-to-end/regression/5493.phpt

@@ -1,7 +1,5 @@
 --TEST--
 https://github.com/sebastianbergmann/phpunit/issues/5493
---XFAIL--
-https://github.com/sebastianbergmann/phpunit/issues/5493
 --FILE--
 <?php declare(strict_types=1);
 $_SERVER['argv'][] = '--do-not-cache-result';