diff --git a/gestioncof/tests/test_views.py b/gestioncof/tests/test_views.py
index 7a21fafe..37f105fd 100644
--- a/gestioncof/tests/test_views.py
+++ b/gestioncof/tests/test_views.py
@@ -16,7 +16,7 @@ from django.urls import reverse
 
 from bda.models import Salle, Tirage
 from gestioncof.models import CalendarSubscription, Club, Event, Survey, SurveyAnswer
-from gestioncof.tests.testcases import ViewTestCaseMixin
+from gestioncof.tests.testcases import MegaHelperMixin, ViewTestCaseMixin
 from shared.tests.testcases import ICalMixin, MockLDAPMixin
 from shared.views.autocomplete import Clipper
 
@@ -505,48 +505,7 @@ class ExportMembersViewTests(ViewTestCaseMixin, TestCase):
         self.assertListEqual(data, expected)
 
 
-class MegaHelpers:
-    def setUp(self):
-        super().setUp()
-
-        u1 = create_user("u1")
-        u1.first_name = "first"
-        u1.last_name = "last"
-        u1.email = "user@mail.net"
-        u1.save()
-        u1.profile.phone = "0123456789"
-        u1.profile.departement = "Dept"
-        u1.profile.comments = "profile.comments"
-        u1.profile.save()
-
-        u2 = create_user("u2")
-        u2.profile.save()
-
-        m = Event.objects.create(title="MEGA 2018")
-
-        cf1 = m.commentfields.create(name="Commentaires")
-        cf2 = m.commentfields.create(name="Comment Field 2", fieldtype="char")
-
-        option_type = m.options.create(name="Orga ? Conscrit ?")
-        choice_orga = option_type.choices.create(value="Orga")
-        choice_conscrit = option_type.choices.create(value="Conscrit")
-
-        mr1 = m.eventregistration_set.create(user=u1)
-        mr1.options.add(choice_orga)
-        mr1.comments.create(commentfield=cf1, content="Comment 1")
-        mr1.comments.create(commentfield=cf2, content="Comment 2")
-
-        mr2 = m.eventregistration_set.create(user=u2)
-        mr2.options.add(choice_conscrit)
-
-        self.u1 = u1
-        self.u2 = u2
-        self.m = m
-        self.choice_orga = choice_orga
-        self.choice_conscrit = choice_conscrit
-
-
-class ExportMegaViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
+class ExportMegaViewTests(MegaHelperMixin, ViewTestCaseMixin, TestCase):
     url_name = "cof.mega_export"
     url_expected = "/export/mega"
 
@@ -575,7 +534,7 @@ class ExportMegaViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
         )
 
 
-class ExportMegaOrgasViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
+class ExportMegaOrgasViewTests(MegaHelperMixin, ViewTestCaseMixin, TestCase):
     url_name = "cof.mega_export_orgas"
     url_expected = "/export/mega/orgas"
 
@@ -604,7 +563,7 @@ class ExportMegaOrgasViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
         )
 
 
-class ExportMegaParticipantsViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
+class ExportMegaParticipantsViewTests(MegaHelperMixin, ViewTestCaseMixin, TestCase):
     url_name = "cof.mega_export_participants"
     url_expected = "/export/mega/participants"
 
@@ -621,7 +580,7 @@ class ExportMegaParticipantsViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
         )
 
 
-class ExportMegaRemarksViewTests(MegaHelpers, ViewTestCaseMixin, TestCase):
+class ExportMegaRemarksViewTests(MegaHelperMixin, ViewTestCaseMixin, TestCase):
     url_name = "cof.mega_export_remarks"
     url_expected = "/export/mega/avecremarques"
 
diff --git a/gestioncof/tests/testcases.py b/gestioncof/tests/testcases.py
index 6da8a28f..2c6cbb9d 100644
--- a/gestioncof/tests/testcases.py
+++ b/gestioncof/tests/testcases.py
@@ -1,3 +1,4 @@
+from gestioncof.models import Event
 from shared.tests.testcases import (
     CSVResponseMixin,
     ViewTestCaseMixin as BaseViewTestCaseMixin,
@@ -6,6 +7,52 @@ from shared.tests.testcases import (
 from .utils import create_member, create_staff, create_user
 
 
+class MegaHelperMixin(CSVResponseMixin):
+    """
+    Mixin pour aider aux tests du MEGA: création de l'event et de plusieurs
+    inscriptions, avec options et commentaires.
+    """
+
+    def setUp(self):
+        super().setUp()
+
+        u1 = create_user("u1")
+        u1.first_name = "first"
+        u1.last_name = "last"
+        u1.email = "user@mail.net"
+        u1.save()
+        u1.profile.phone = "0123456789"
+        u1.profile.departement = "Dept"
+        u1.profile.comments = "profile.comments"
+        u1.profile.save()
+
+        u2 = create_user("u2")
+        u2.profile.save()
+
+        m = Event.objects.create(title="MEGA 2018")
+
+        cf1 = m.commentfields.create(name="Commentaires")
+        cf2 = m.commentfields.create(name="Comment Field 2", fieldtype="char")
+
+        option_type = m.options.create(name="Orga ? Conscrit ?")
+        choice_orga = option_type.choices.create(value="Orga")
+        choice_conscrit = option_type.choices.create(value="Conscrit")
+
+        mr1 = m.eventregistration_set.create(user=u1)
+        mr1.options.add(choice_orga)
+        mr1.comments.create(commentfield=cf1, content="Comment 1")
+        mr1.comments.create(commentfield=cf2, content="Comment 2")
+
+        mr2 = m.eventregistration_set.create(user=u2)
+        mr2.options.add(choice_conscrit)
+
+        self.u1 = u1
+        self.u2 = u2
+        self.m = m
+        self.choice_orga = choice_orga
+        self.choice_conscrit = choice_conscrit
+
+
 class ViewTestCaseMixin(BaseViewTestCaseMixin):
     """
     TestCase extension to ease testing of cof views.