Files
edx-platform/lms/djangoapps/instructor/tests/test_certificates.py
2015-05-07 09:17:26 -04:00

225 lines
9.4 KiB
Python

"""Tests for the certificates panel of the instructor dash. """
import contextlib
import ddt
import mock
from nose.plugins.attrib import attr
from django.core.urlresolvers import reverse
from django.test.utils import override_settings
from xmodule.modulestore.tests.django_utils import ModuleStoreTestCase
from xmodule.modulestore.tests.factories import CourseFactory
from config_models.models import cache
from courseware.tests.factories import GlobalStaffFactory, InstructorFactory
from certificates.models import CertificateGenerationConfiguration
from certificates import api as certs_api
@attr('shard_1')
@ddt.ddt
class CertificatesInstructorDashTest(ModuleStoreTestCase):
"""Tests for the certificate panel of the instructor dash. """
ERROR_REASON = "An error occurred!"
DOWNLOAD_URL = "http://www.example.com/abcd123/cert.pdf"
def setUp(self):
super(CertificatesInstructorDashTest, self).setUp()
self.course = CourseFactory.create()
self.url = reverse(
'instructor_dashboard',
kwargs={'course_id': unicode(self.course.id)}
)
self.global_staff = GlobalStaffFactory()
self.instructor = InstructorFactory(course_key=self.course.id)
# Need to clear the cache for model-based configuration
cache.clear()
# Enable the certificate generation feature
CertificateGenerationConfiguration.objects.create(enabled=True)
def test_visible_only_to_global_staff(self):
# Instructors don't see the certificates section
self.client.login(username=self.instructor.username, password="test")
self._assert_certificates_visible(False)
# Global staff can see the certificates section
self.client.login(username=self.global_staff.username, password="test")
self._assert_certificates_visible(True)
def test_visible_only_when_feature_flag_enabled(self):
# Disable the feature flag
CertificateGenerationConfiguration.objects.create(enabled=False)
cache.clear()
# Now even global staff can't see the certificates section
self.client.login(username=self.global_staff.username, password="test")
self._assert_certificates_visible(False)
@ddt.data("started", "error", "success")
def test_show_certificate_status(self, status):
self.client.login(username=self.global_staff.username, password="test")
with self._certificate_status("honor", status):
self._assert_certificate_status("honor", status)
def test_show_enabled_button(self):
self.client.login(username=self.global_staff.username, password="test")
# Initially, no example certs are generated, so
# the enable button should be disabled
self._assert_enable_certs_button_is_disabled()
with self._certificate_status("honor", "success"):
# Certs are disabled for the course, so the enable button should be shown
self._assert_enable_certs_button(True)
# Enable certificates for the course
certs_api.set_cert_generation_enabled(self.course.id, True)
# Now the "disable" button should be shown
self._assert_enable_certs_button(False)
def test_can_disable_even_after_failure(self):
self.client.login(username=self.global_staff.username, password="test")
with self._certificate_status("honor", "error"):
# When certs are disabled for a course, then don't allow them
# to be enabled if certificate generation doesn't complete successfully
certs_api.set_cert_generation_enabled(self.course.id, False)
self._assert_enable_certs_button_is_disabled()
# However, if certificates are already enabled, allow them
# to be disabled even if an error has occurred
certs_api.set_cert_generation_enabled(self.course.id, True)
self._assert_enable_certs_button(False)
def _assert_certificates_visible(self, is_visible):
"""Check that the certificates section is visible on the instructor dash. """
response = self.client.get(self.url)
if is_visible:
self.assertContains(response, "Certificates")
else:
self.assertNotContains(response, "Certificates")
@contextlib.contextmanager
def _certificate_status(self, description, status):
"""Configure the certificate status by mocking the certificates API. """
patched = 'instructor.views.instructor_dashboard.certs_api.example_certificates_status'
with mock.patch(patched) as certs_api_status:
cert_status = [{
'description': description,
'status': status
}]
if status == 'error':
cert_status[0]['error_reason'] = self.ERROR_REASON
if status == 'success':
cert_status[0]['download_url'] = self.DOWNLOAD_URL
certs_api_status.return_value = cert_status
yield
def _assert_certificate_status(self, cert_name, expected_status):
"""Check the certificate status display on the instructor dash. """
response = self.client.get(self.url)
if expected_status == 'started':
expected = 'Generating example {name} certificate'.format(name=cert_name)
self.assertContains(response, expected)
elif expected_status == 'error':
expected = self.ERROR_REASON
self.assertContains(response, expected)
elif expected_status == 'success':
expected = self.DOWNLOAD_URL
self.assertContains(response, expected)
else:
self.fail("Invalid certificate status: {status}".format(status=expected_status))
def _assert_enable_certs_button_is_disabled(self):
"""Check that the "enable student-generated certificates" button is disabled. """
response = self.client.get(self.url)
expected_html = '<button class="is-disabled" disabled>Enable Student-Generated Certificates</button>'
self.assertContains(response, expected_html)
def _assert_enable_certs_button(self, is_enabled):
"""Check whether the button says "enable" or "disable" cert generation. """
response = self.client.get(self.url)
expected_html = (
'Enable Student-Generated Certificates' if is_enabled
else 'Disable Student-Generated Certificates'
)
self.assertContains(response, expected_html)
@attr('shard_1')
@override_settings(CERT_QUEUE='certificates')
@ddt.ddt
class CertificatesInstructorApiTest(ModuleStoreTestCase):
"""Tests for the certificates end-points in the instructor dash API. """
def setUp(self):
super(CertificatesInstructorApiTest, self).setUp()
self.course = CourseFactory.create()
self.global_staff = GlobalStaffFactory()
self.instructor = InstructorFactory(course_key=self.course.id)
# Enable certificate generation
cache.clear()
CertificateGenerationConfiguration.objects.create(enabled=True)
@ddt.data('generate_example_certificates', 'enable_certificate_generation')
def test_allow_only_global_staff(self, url_name):
url = reverse(url_name, kwargs={'course_id': self.course.id})
# Instructors do not have access
self.client.login(username=self.instructor.username, password='test')
response = self.client.post(url)
self.assertEqual(response.status_code, 403)
# Global staff have access
self.client.login(username=self.global_staff.username, password='test')
response = self.client.post(url)
self.assertEqual(response.status_code, 302)
def test_generate_example_certificates(self):
self.client.login(username=self.global_staff.username, password='test')
url = reverse(
'generate_example_certificates',
kwargs={'course_id': unicode(self.course.id)}
)
response = self.client.post(url)
# Expect a redirect back to the instructor dashboard
self._assert_redirects_to_instructor_dash(response)
# Expect that certificate generation started
# Cert generation will fail here because XQueue isn't configured,
# but the status should at least not be None.
status = certs_api.example_certificates_status(self.course.id)
self.assertIsNot(status, None)
@ddt.data(True, False)
def test_enable_certificate_generation(self, is_enabled):
self.client.login(username=self.global_staff.username, password='test')
url = reverse(
'enable_certificate_generation',
kwargs={'course_id': unicode(self.course.id)}
)
params = {'certificates-enabled': 'true' if is_enabled else 'false'}
response = self.client.post(url, data=params)
# Expect a redirect back to the instructor dashboard
self._assert_redirects_to_instructor_dash(response)
# Expect that certificate generation is now enabled for the course
actual_enabled = certs_api.cert_generation_enabled(self.course.id)
self.assertEqual(is_enabled, actual_enabled)
def _assert_redirects_to_instructor_dash(self, response):
"""Check that the response redirects to the certificates section. """
expected_redirect = reverse(
'instructor_dashboard',
kwargs={'course_id': unicode(self.course.id)}
)
expected_redirect += '#view-certificates'
self.assertRedirects(response, expected_redirect)