Redirect Course Home for course that hasn't started.

Includes the following:
- Move the redirect logic for before course that hasn't started to
share between Course Info and Course Home.
- Add audit comments for Course Info vs Course Home
- Other minor clean-up.

LEARNER-613

lms/djangoapps/courseware/courses.py

@@ -6,16 +6,10 @@ import logging
 from collections import defaultdict
 from datetime import datetime
 
-import pytz
-from django.conf import settings
-from django.core.urlresolvers import reverse
-from django.http import Http404
-from fs.errors import ResourceNotFoundError
-from opaque_keys.edx.keys import UsageKey
-from path import Path as path
-
 import branding
+import pytz
 from courseware.access import has_access
+from courseware.access_response import StartDateError
 from courseware.date_summary import (
     CourseEndDate,
     CourseStartDate,
@@ -25,13 +19,20 @@ from courseware.date_summary import (
 )
 from courseware.model_data import FieldDataCache
 from courseware.module_render import get_module, get_module_for_descriptor
+from django.conf import settings
+from django.core.urlresolvers import reverse
+from django.http import Http404, QueryDict
 from edxmako.shortcuts import render_to_string
+from fs.errors import ResourceNotFoundError
 from lms.djangoapps.courseware.courseware_access_exception import CoursewareAccessException
 from lms.djangoapps.courseware.exceptions import CourseAccessRedirect
+from opaque_keys.edx.keys import UsageKey
 from openedx.core.djangoapps.content.course_overviews.models import CourseOverview
 from openedx.core.djangoapps.site_configuration import helpers as configuration_helpers
+from path import Path as path
 from static_replace import replace_static_urls
 from student.models import CourseEnrollment
+from util.date_utils import strftime_localized
 from xmodule.modulestore.django import modulestore
 from xmodule.modulestore.exceptions import ItemNotFoundError
 from xmodule.x_module import STUDENT_VIEW
@@ -121,6 +122,16 @@ def check_course_access(course, user, action, check_if_enrolled=False):
 
     access_response = has_access(user, action, course, course.id)
     if not access_response:
+        # Redirect if StartDateError
+        if isinstance(access_response, StartDateError):
+            start_date = strftime_localized(course.start, 'SHORT_DATE')
+            params = QueryDict(mutable=True)
+            params['notlive'] = start_date
+            raise CourseAccessRedirect('{dashboard_url}?{params}'.format(
+                dashboard_url=reverse('dashboard'),
+                params=params.urlencode()
+            ))
+
         # Deliberately return a non-specific error message to avoid
         # leaking info about access control settings
         raise CoursewareAccessException(access_response)

lms/djangoapps/courseware/tests/test_course_info.py

@@ -8,11 +8,10 @@ from django.conf import settings
 from django.core.urlresolvers import reverse
 from django.http import QueryDict
 from django.test.utils import override_settings
-from nose.plugins.attrib import attr
-from pyquery import PyQuery as pq
-
 from lms.djangoapps.ccx.tests.factories import CcxFactory
+from nose.plugins.attrib import attr
 from openedx.core.djangoapps.self_paced.models import SelfPacedConfiguration
+from pyquery import PyQuery as pq
 from student.models import CourseEnrollment
 from student.tests.factories import AdminFactory
 from util.date_utils import strftime_localized
@@ -58,6 +57,7 @@ class CourseInfoTestCase(LoginEnrollmentTestCase, SharedModuleStoreTestCase):
         resp = self.client.get(url)
         self.assertNotIn("You are not currently enrolled in this course", resp.content)
 
+    # TODO: LEARNER-611: If this is only tested under Course Info, does this need to move?
     @mock.patch('openedx.features.enterprise_support.api.get_enterprise_consent_url')
     def test_redirection_missing_enterprise_consent(self, mock_get_url):
         """
@@ -120,7 +120,7 @@ class CourseInfoTestCase(LoginEnrollmentTestCase, SharedModuleStoreTestCase):
         self.assertRedirects(response, expected_url)
 
     @mock.patch.dict(settings.FEATURES, {'DISABLE_START_DATES': False})
-    @mock.patch("courseware.views.views.strftime_localized")
+    @mock.patch("util.date_utils.strftime_localized")
     def test_non_live_course_other_language(self, mock_strftime_localized):
         """Ensure that a user accessing a non-live course sees a redirect to
         the student dashboard, not a 404, even if the localized date is unicode
@@ -385,7 +385,7 @@ class SelfPacedCourseInfoTestCase(LoginEnrollmentTestCase, SharedModuleStoreTest
         self.assertEqual(resp.status_code, 200)
 
     def test_num_queries_instructor_paced(self):
-        self.fetch_course_info_with_queries(self.instructor_paced_course, 26, 4)
+        self.fetch_course_info_with_queries(self.instructor_paced_course, 26, 3)
 
     def test_num_queries_self_paced(self):
-        self.fetch_course_info_with_queries(self.self_paced_course, 26, 4)
+        self.fetch_course_info_with_queries(self.self_paced_course, 26, 3)

lms/djangoapps/courseware/tests/test_view_authentication.py

@@ -60,7 +60,7 @@ class TestViewAuth(ModuleStoreTestCase, LoginEnrollmentTestCase):
         Check that non-staff don't have access to dark urls.
         """
 
-        names = ['courseware', 'instructor_dashboard', 'progress']
+        names = ['courseware', 'progress']
         urls = self._reverse_urls(names, course)
         urls.extend([
             reverse('book', kwargs={'course_id': course.id.to_deprecated_string(),
@@ -68,7 +68,11 @@ class TestViewAuth(ModuleStoreTestCase, LoginEnrollmentTestCase):
             for index, __ in enumerate(course.textbooks)
         ])
         for url in urls:
-            self.assert_request_status_code(404, url)
+            self.assert_request_status_code(302, url)
+
+        self.assert_request_status_code(
+            404, reverse('instructor_dashboard', kwargs={'course_id': course.id.to_deprecated_string()})
+        )
 
     def _check_staff(self, course):
         """
@@ -97,7 +101,7 @@ class TestViewAuth(ModuleStoreTestCase, LoginEnrollmentTestCase):
                 'student_id': self.enrolled_user.id,
             }
         )
-        self.assert_request_status_code(404, url)
+        self.assert_request_status_code(302, url)
 
         # The courseware url should redirect, not 200
         url = self._reverse_urls(['courseware'], course)[0]
@@ -351,9 +355,9 @@ class TestViewAuth(ModuleStoreTestCase, LoginEnrollmentTestCase):
         self.enroll(self.test_course, True)
 
         # should now be able to get to everything for self.course
+        self._check_staff(self.course)
         self._check_non_staff_light(self.test_course)
         self._check_non_staff_dark(self.test_course)
-        self._check_staff(self.course)
 
     @patch.dict('courseware.access.settings.FEATURES', {'DISABLE_START_DATES': False})
     def test_dark_launch_global_staff(self):

openedx/features/course_experience/tests/views/test_course_home.py

+# coding=utf-8
 """
 Tests for the course home page.
 """
 import ddt
-
+import mock
 from courseware.tests.factories import StaffFactory
+from django.conf import settings
 from django.core.urlresolvers import reverse
+from django.http import QueryDict
 from django.utils.http import urlquote_plus
 from openedx.core.djangoapps.waffle_utils.testutils import WAFFLE_TABLES, override_waffle_flag
 from openedx.features.course_experience import SHOW_REVIEWS_TOOL_FLAG, UNIFIED_COURSE_TAB_FLAG
 from student.models import CourseEnrollment
 from student.tests.factories import UserFactory
+from util.date_utils import strftime_localized
 from xmodule.modulestore import ModuleStoreEnum
 from xmodule.modulestore.tests.django_utils import CourseUserType, SharedModuleStoreTestCase
 from xmodule.modulestore.tests.factories import CourseFactory, ItemFactory, check_mongo_calls
@@ -28,12 +32,25 @@ QUERY_COUNT_TABLE_BLACKLIST = WAFFLE_TABLES
 
 def course_home_url(course):
     """
-    Returns the URL for the course's home page
+    Returns the URL for the course's home page.
+
+    Arguments:
+        course (CourseDescriptor): The course being tested.
+    """
+    return course_home_url_from_string(unicode(course.id))
+
+
+def course_home_url_from_string(course_key_string):
+    """
+    Returns the URL for the course's home page.
+
+    Arguments:
+        course_key_string (String): The course key as string.
     """
     return reverse(
         'openedx.course_experience.course_home',
         kwargs={
-            'course_id': unicode(course.id),
+            'course_id': course_key_string,
         }
     )
 
@@ -211,3 +228,54 @@ class TestCourseHomePageAccess(CourseHomePageTestCase):
         url = course_home_url(self.course)
         response = self.client.get(url)
         self.assertContains(response, '/login?next={url}'.format(url=urlquote_plus(url)))
+
+    @mock.patch.dict(settings.FEATURES, {'DISABLE_START_DATES': False})
+    def test_non_live_course(self):
+        """
+        Ensure that a user accessing a non-live course sees a redirect to
+        the student dashboard, not a 404.
+        """
+        self.user = self.create_user_for_course(self.course, CourseUserType.ENROLLED)
+
+        url = course_home_url(self.course)
+        response = self.client.get(url)
+        start_date = strftime_localized(self.course.start, 'SHORT_DATE')
+        expected_params = QueryDict(mutable=True)
+        expected_params['notlive'] = start_date
+        expected_url = '{url}?{params}'.format(
+            url=reverse('dashboard'),
+            params=expected_params.urlencode()
+        )
+        self.assertRedirects(response, expected_url)
+
+    @mock.patch.dict(settings.FEATURES, {'DISABLE_START_DATES': False})
+    @mock.patch("util.date_utils.strftime_localized")
+    def test_non_live_course_other_language(self, mock_strftime_localized):
+        """
+        Ensure that a user accessing a non-live course sees a redirect to
+        the student dashboard, not a 404, even if the localized date is unicode
+        """
+        self.user = self.create_user_for_course(self.course, CourseUserType.ENROLLED)
+
+        fake_unicode_start_time = u"üñîçø∂é_ßtå®t_tîµé"
+        mock_strftime_localized.return_value = fake_unicode_start_time
+
+        url = course_home_url(self.course)
+        response = self.client.get(url)
+        expected_params = QueryDict(mutable=True)
+        expected_params['notlive'] = fake_unicode_start_time
+        expected_url = u'{url}?{params}'.format(
+            url=reverse('dashboard'),
+            params=expected_params.urlencode()
+        )
+        self.assertRedirects(response, expected_url)
+
+    def test_nonexistent_course(self):
+        """
+        Ensure a non-existent course results in a 404.
+        """
+        self.user = self.create_user_for_course(self.course, CourseUserType.ANONYMOUS)
+
+        url = course_home_url_from_string('not/a/course')
+        response = self.client.get(url)
+        self.assertEqual(response.status_code, 404)