fix: pass pytest common CertificateDashboardMessageDisplayTest

[Carlos-Muniz]

As part of #36, several tests have been discovered that are not passing in tutor, but passing in devstack. The following tests may not be run by tutor, or may be failing in tutor.

common/djangoapps/student/tests/test_certificates.py::CertificateDashboardMessageDisplayTest::

• test_certificate_available_date_2___CertificatesDisplayBehaviors_END___end____False_
  • Removed because this test passes now
• test_certificate_available_date_1___CertificatesDisplayBehaviors_END___end____True_

For more information about the tests that passed, failed, skipped, or never ran, see the spreadsheet with all the tests.

[Carlos-Muniz]

After running common/djangoapps/student/tests/test_certificates.py::CertificateDashboardMessageDisplayTest tests again, the only failure was

FAILED common/djangoapps/student/tests/test_certificates.py::CertificateDashboardMessageDisplayTest::test_certificate_available_date_1___CertificatesDisplayBehaviors_END___end____True_

Here is the related pytest output:

================================================ FAILURES ================================================
_ CertificateDashboardMessageDisplayTest.test_certificate_available_date_1___CertificatesDisplayBehaviors_END___end____True_ _

self = <common.djangoapps.student.tests.test_certificates.CertificateDashboardMessageDisplayTest testMethod=test_certificate_available_date_1___CertificatesDisplayBehaviors_END___end____True_>
certificates_display_behavior = <CertificatesDisplayBehaviors.END: 'end'>, past_date = True

    @ddt.data(
        (CertificatesDisplayBehaviors.END, True),
        (CertificatesDisplayBehaviors.END, False),
        (CertificatesDisplayBehaviors.END_WITH_DATE, True),
        (CertificatesDisplayBehaviors.END_WITH_DATE, False)
    )
    @ddt.unpack
    def test_certificate_available_date(self, certificates_display_behavior, past_date):
        cert = self._create_certificate('verified')
        cert.status = CertificateStatuses.downloadable
        cert.save()

        self.course.certificates_display_behavior = certificates_display_behavior

        if certificates_display_behavior == CertificatesDisplayBehaviors.END:
            if past_date:
                self.course.end = PAST_DATE
            else:
                self.course.end = FUTURE_DATE
        if certificates_display_behavior == CertificatesDisplayBehaviors.END_WITH_DATE:
            if past_date:
                self.course.certificate_available_date = PAST_DATE
            else:
                self.course.certificate_available_date = FUTURE_DATE

        self.course.save()
        self.store.update_item(self.course, self.USERNAME)

>       self._check_message(PAST_DATE if past_date else FUTURE_DATE)

common/djangoapps/student/tests/test_certificates.py:137:
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
common/djangoapps/student/tests/test_certificates.py:102: in _check_message
    self.assertNotContains(response, test_message)
../venv/lib/python3.8/site-packages/django/test/testcases.py:482: in assertNotContains
    self.assertEqual(real_count, 0, msg_prefix + "Response should not contain %s" % text_repr)
E   AssertionError: 1 != 0 : Response should not contain 'Your grade and certificate will be ready after'
------------------------------------------- Captured log call --------------------------------------------
ERROR    openedx.core.djangoapps.safe_sessions.middleware:middleware.py:179 SafeCookieData BWC parse error: 'wgjvbme3lemsc1qd3iszchp0q4nkn9ve'.

[Carlos-Muniz]

Closing this issue because it fails for both Devstack and Tutor.

[Carlos-Muniz]

This test does pass in tutor. See #155 for more details.