def test_calculated_field_is_cleared_when_term_goes_invalid(self):
credit = CreditFactory()
term_field = DocumentationFieldFactory(credit=credit,
type='numeric',
identifier='BA')
calculated_field = DocumentationField.objects.create(
credit=credit, type='calculated', formula='value = BA')
credit_submission = CreditUserSubmissionFactory(credit=credit)
term_submission = NumericDocumentationFieldSubmissionFactory(
credit_submission=credit_submission,
documentation_field=term_field,
value=1)
calculated_submission = NumericDocumentationFieldSubmissionFactory(
credit_submission=credit_submission,
documentation_field=calculated_field,
value=100)
term_submission.value = None
term_submission.save()
# We have a dirty read.
calculated_submission = NumericSubmission.objects.get(
pk=calculated_submission.pk)
self.assertEqual(None, calculated_submission.value)
def test_calculated_field_is_calculated_when_term_changes(self):
credit = CreditFactory()
first_term_field = DocumentationFieldFactory(credit=credit,
type='numeric',
identifier='AA')
second_term_field = DocumentationFieldFactory(credit=credit,
type='numeric',
identifier='AB')
calculated_field = DocumentationField.objects.create(
credit=credit,
type='calculated',
formula='value = (AA or 0) + (AB or 0)')
credit_submission = CreditUserSubmissionFactory(credit=credit)
first_term_submission = NumericDocumentationFieldSubmissionFactory(
credit_submission=credit_submission,
documentation_field=first_term_field,
value=1)
NumericDocumentationFieldSubmissionFactory(
credit_submission=credit_submission,
documentation_field=second_term_field,
value=2)
calculated_submission = NumericDocumentationFieldSubmissionFactory(
credit_submission=credit_submission,
documentation_field=calculated_field,
value=None)
first_term_submission.value = 10
first_term_submission.save()
# We have a dirty read.
calculated_submission = NumericSubmission.objects.get(
pk=calculated_submission.pk)
self.assertEqual(12, calculated_submission.value)