Domain\Student\StudentTest::test_has_delayed_payments PHP Method

    public function test_has_delayed_payments()
    {
        $student = factory(Student::class)->create();
        $billet = factory(Billet::class)->create(['student_id' => $student->id, 'amount' => 100, 'due_date' => Carbon::yesterday()]);
        $this->assertTrue($student->hasDelayed());
    }