Change cohort tests to not use an invalid username

common/test/acceptance/tests/discussion/test_cohort_management.py

@@ -51,9 +51,9 @@ class CohortConfigurationTest(UniqueCourseTest, CohortTestMixin):
         ).visit().get_user_id()
         self.add_user_to_cohort(self.course_fixture, self.student_name, self.manual_cohort_id)
 
-        # create a user with unicode characters in their username
-        self.unicode_student_id = AutoAuthPage(
-            self.browser, username="Ωπ", email="unicode_student_user@example.com",
+        # create a second student user
+        self.other_student_id = AutoAuthPage(
+            self.browser, username="other_student_user", email="other_student_user@example.com",
             course_id=self.course_id, staff=False
         ).visit().get_user_id()
 
@@ -389,12 +389,12 @@ class CohortConfigurationTest(UniqueCourseTest, CohortTestMixin):
             }).count(),
             1
         )
-        # unicode_student_user (previously unassigned) is added to manual cohort
+        # other_student_user (previously unassigned) is added to manual cohort
         self.assertEqual(
             self.event_collection.find({
                 "name": "edx.cohort.user_added",
                 "time": {"$gt": start_time},
-                "event.user_id": {"$in": [int(self.unicode_student_id)]},
+                "event.user_id": {"$in": [int(self.other_student_id)]},
                 "event.cohort_name": self.manual_cohort_name,
             }).count(),
             1

common/test/acceptance/tests/test_cohorted_courseware.py

@@ -47,7 +47,7 @@ class EndToEndCohortedCoursewareTest(ContainerBase):
         ).visit()
 
         # Create a student who will end up in the default cohort group
-        self.cohort_default_student_username = "cohort default student"
+        self.cohort_default_student_username = "cohort_default_student"
         self.cohort_default_student_email = "cohort_default_student@example.com"
         StudioAutoAuthPage(
             self.browser, username=self.cohort_default_student_username,

common/test/data/uploads/cohort_users_both_columns.csv

 username,email,ignored_column,cohort
 instructor_user,,June,ManualCohort1
 ,student_user@example.com,Spring,AutoCohort1
-Ωπ,,Fall,ManualCohort1
+other_student_user,,Fall,ManualCohort1

common/test/data/uploads/cohort_users_only_email.csv

 email,cohort
 instructor_user@example.com,ManualCohort1
 student_user@example.com,AutoCohort1
-unicode_student_user@example.com,ManualCohort1
+other_student_user@example.com,ManualCohort1
 

common/test/data/uploads/cohort_users_only_username.csv

 username,cohort
 instructor_user,ManualCohort1
 student_user,AutoCohort1
-Ωπ,ManualCohort1
\ No newline at end of file
+other_student_user,ManualCohort1