Stabilize test case timing

Author: Vectorial1024

tests/AsyncTaskTest.php

@@ -138,7 +138,9 @@ public function testAsyncTimeout()
         $task = new AsyncTask($timeoutTask);
         $task->withTimeLimit(1)->start();
         // we wait for it to timeout
-        $this->sleep(2);
+        $this->sleep(0.5);
+        $this->sleep(0.5);
+        $this->sleep(0.5);
         // should have timed out
         $this->assertFileExists($textFilePath, "The async task probably did not trigger its timeout handler because its timeout output file is not found.");
         $this->assertStringEqualsFile($textFilePath, $message);

tests/Tasks/TestTimeoutNormalTask.php

@@ -17,9 +17,12 @@ public function __construct(
     public function execute(): void
     {
         // we have to sleep a bit to trigger the timeout
-        // the test has a timeout of 1s, so we try to sleep for 1.5s
-        sleep(1);
-        usleep(500000);
+        // the test has a timeout of 1s, so we try to sleep for slightly longer than 1 seconds
+        // this is currently 1.2 seconds
+        usleep(300000);
+        usleep(300000);
+        usleep(300000);
+        usleep(300000);
     }
 
     public function handleTimeout(): void