PHPunit test sometimes fails....

You need to be a bit more specific and preferably post some code snippet to illustrate your problem.

My phpunit test sometimes fails at this point(completing_a_task)

    $project = ProjectFactory::withTasks(1)->create();

    $this->actingAs($project->owner)->patch($project->tasks->first()->path(), [
        'body' => 'foobar',
        'completed' => true
    ]);

    $this->assertCount(3, $project->activity);

    tap($project->activity->last(), function ($activity) {
        dd($activity->description);
        $this->assertEquals('completed_task', $activity->description);
        $this->assertInstanceOf(Task::class, $activity->subject);
    });

I know that we assume that we are gonna get 'completed_task' from $project->activity->last() in tap function

However, I do get sometimes 'created_task' instead of 'completed_task' that we expect. So the part of test fails

I'm also using RfreshDatabase trait above.

Is there anyone who knows that issue and assumable problem?? @Jeff

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

I found that when I fetch like this $project->activity, It has rarely different sequence.

for that reason, $project->activity->last() gets different attributes.

That's why the assertion below fails sometimes.

$this->assertEquals('completed_task', $activity->description);

<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<

I figured it out.

The problem was time. In Project Model, we have that relationship and fetch by using latest()

public function activity()
{
    return $this->hasMany(Activity::class)->latest();
}

when I did the test above, I get activities(3) at the exact same time most but rarely there was one second gap between second activity and third activity,So the third one was stored in array as a first. furthermore, since we are retrieving them by chaining last() which means getting the last one in array. That' the reason why I got 'created_task' not 'completed_task'

I hope that my writing can help someone like me. :)

Thank you for your reply :)