Closes #6133

Author: sebastianbergmann

ChangeLog-12.0.md

@@ -11,6 +11,7 @@ All notable changes of the PHPUnit 12.0 release series are documented in this fi
 ### Fixed
 
 * [#5951](https://github.com/sebastianbergmann/phpunit/issues/5951#issuecomment-2656364815): Restore the `includeUncoveredFiles` configuration option
+* [#6133](https://github.com/sebastianbergmann/phpunit/issues/6133): Precision loss in aggregated test suite execution time(s) reported by JUnit XML logger
 * A `Test\PreparationFailed` event is now emitted in addition to a `Test\Errored` event when an unexpected exception is triggered in a before-test method
 * A `Test\Passed` event is no longer emitted in addition to a `Test\Failed` or `Test\Errored` event when an assertion failure or an unexpected exception is triggered in an after-test method
 * A `TestSuite\Finished` event is now emitted when a before-first-test method errors

src/Logging/JUnit/JunitXmlLogger.php

@@ -285,7 +285,7 @@ private function handleFinish(Info $telemetryInfo, int $numberOfAssertionsPerfor
         );
 
         $this->testSuiteTests[$this->testSuiteLevel]++;
-        $this->testSuiteTimes[$this->testSuiteLevel] += (int) $time;
+        $this->testSuiteTimes[$this->testSuiteLevel] += $time;
 
         $this->currentTestCase  = null;
         $this->time             = null;