Reset the peak memory usage returned by memory_get_peak_usage() before the Test\Prepared event is emitted so that (memory usage at Test\Finished - memory usage at Test\Prepared) is the memory usage of the test

Author: sebastianbergmann

src/Event/Emitter/DispatchingEmitter.php

@@ -10,6 +10,7 @@
 namespace PHPUnit\Event;
 
 use function assert;
+use function memory_reset_peak_usage;
 use PHPUnit\Event\Code\ClassMethod;
 use PHPUnit\Event\Code\ComparisonFailure;
 use PHPUnit\Event\Code\IssueTrigger\IssueTrigger;
@@ -499,6 +500,8 @@ public function preConditionFinished(string $testClassName, ClassMethod ...$call
      */
     public function testPrepared(Code\Test $test): void
     {
+        memory_reset_peak_usage();
+
         $this->dispatcher->dispatch(
             new Test\Prepared(
                 $this->telemetryInfo(),