def test_simAbility(self): cat_test = CatTest() cat_test.name = "short" cat_test.max_items = 10 cat_test.save() user = User.objects.create_user('john', '*****@*****.**', 'johnpassword') user.save() domain = Domain() domain.name = "Number" domain.create_date = datetime.datetime(2012,03,06) domain.save() item_bank = ItemBank() item_bank.name = "Fractions" item_bank.topic = "Addition" item_bank.domain = domain item_bank.question_type = QuestionType.objects.get(pk=1) item_bank.template = ItemBankTemplate.objects.get(pk=1) item_bank.save() user_item_bank = UserItemBank() user_item_bank.user = user user_item_bank.item_bank = item_bank user_item_bank.save() grd = Grade.objects.get(name="A") thresh = Threshold() thresh.grade = grd thresh.item_bank = item_bank thresh.ability = -1 thresh.save() user_item_bank.probabilities() probs = UserItemBankProbabilities.objects.filter(user_item_bank=user_item_bank) self.assertEquals(len(probs),1) ibq = ItemBankQuestion() ibq.item_bank = item_bank ibq.save() user_cat_test = UserCatTest() user_cat_test.user = user user_cat_test.item_bank = item_bank user_cat_test.cat_test = cat_test user_cat_test.save() #Make three questions for i in range(1,4): ibq = ItemBankQuestion() ibq.item_bank = item_bank ibq.save() #Find first question user_cat_test.nextQuestion() user_cat_test.simAbility() self.assertEquals(round(user_cat_test.ability,3),-0.337) self.assertEquals(round(user_cat_test.stand_dev,3),0.885) probs = UserItemBankProbabilities.objects.filter(user_item_bank=user_item_bank)[0] self.assertEquals(round(probs.probability,0),77.0) user_cat_test.nextQuestion() user_cat_test.simAbility() self.assertEquals(round(user_cat_test.ability,3),-0.813) self.assertEquals(round(user_cat_test.stand_dev,3),0.829)