tests: Fix unittest without ev extension

tests/Lib/PromiseBoundTask.php

@@ -14,6 +14,9 @@ class PromiseBoundTask implements Task
     /** @var ExtendedPromiseInterface */
     protected $promise;
 
+    /** @var int  */
+    protected $startedPromises = 0;
+
     public function __construct(ExtendedPromiseInterface $promise)
     {
         $this->promise = $promise;
@@ -23,8 +26,15 @@ public function __construct(ExtendedPromiseInterface $promise)
         $this->setUuid($uuid);
     }
 
+    public function getStartedPromises(): int
+    {
+        return $this->startedPromises;
+    }
+
     public function run(): ExtendedPromiseInterface
     {
+        $this->startedPromises++;
+
         return $this->promise;
     }
 }

tests/SchedulerTest.php

@@ -114,8 +114,9 @@ function (Task $_, array $promises) use (&$canceledPromises): void {
                 }
             );
 
-        // Wait .001ms for the scheduler to run the task at least 2x before removing it und stopping the event loop.
-        Loop::addTimer(.001, function () use ($task): void {
+        // Wait 0.01s for the scheduler to run the task a couple of times before
+        // removing it und stopping the event loop.
+        Loop::addTimer(.01, function () use ($task): void {
             $this->scheduler->remove($task);
 
             Loop::stop();
@@ -125,7 +126,8 @@ function (Task $_, array $promises) use (&$canceledPromises): void {
 
         // When a task is due before the ongoing promise gets resolved, the scheduler will
         // not cancel it. Instead, it will start a new one for the new operations.
-        $this->assertCount(2, $canceledPromises, 'Scheduler::remove() did not cancel running tasks');
+        $startedPromises = $task->getStartedPromises();
+        $this->assertCount($startedPromises, $canceledPromises, 'Scheduler::remove() did not cancel running tasks');
 
         $scheduledTimers = $this->scheduler->countTimers();
         $scheduledTasks = $this->scheduler->count();