mockdb tests now more efficient

src/registrar/tests/common.py

@@ -525,10 +525,16 @@ class AuditedAdminMockData:
 
 
 class MockDb(TestCase):
-    """Hardcoded mocks make test case assertions straightforward."""
+    """Hardcoded mocks make test case assertions straightforward.
+    setUpClass and tearDownClass are used so that multiple tests
+    can be executed using the same mock db data without having to
+    setUp and tearDown the data in between.
+    This strategy requires that any changes to data within a test
+    must be cleaned up within the test rather than relying on tearDown."""
 
-    def setUp(self):
-        super().setUp()
+    @classmethod
+    def setUpClass(self):
+        super().setUpClass()
         username = "test_user"
         first_name = "First"
         last_name = "Last"
@@ -782,8 +788,9 @@ class MockDb(TestCase):
             self.domain_request_6.submission_date = get_time_aware_date(datetime(2024, 4, 2))
             self.domain_request_6.save()
 
-    def tearDown(self):
-        super().tearDown()
+    @classmethod
+    def tearDownClass(self):
+        super().tearDownClass()
         PublicContact.objects.all().delete()
         Domain.objects.all().delete()
         DomainInformation.objects.all().delete()

src/registrar/tests/test_admin.py

@@ -898,8 +898,9 @@ class TestListHeaderAdmin(TestCase):
 
 
 class TestMyUserAdmin(MockDb):
-    def setUp(self):
-        super().setUp()
+    @classmethod
+    def setUpClass(self):
+        super().setUpClass()
         admin_site = AdminSite()
         self.admin = MyUserAdmin(model=get_user_model(), admin_site=admin_site)
         self.client = Client(HTTP_HOST="localhost:8080")
@@ -907,8 +908,9 @@ class TestMyUserAdmin(MockDb):
         self.staffuser = create_user()
         self.test_helper = GenericTestHelper(admin=self.admin)
 
-    def tearDown(self):
-        super().tearDown()
+    @classmethod
+    def tearDownClass(self):
+        super().tearDownClass()
         DomainRequest.objects.all().delete()
         User.objects.all().delete()
 
@@ -1094,6 +1096,15 @@ class TestMyUserAdmin(MockDb):
         expected_href = reverse("admin:registrar_domain_change", args=[domain_deleted.pk])
         self.assertNotContains(response, expected_href)
 
+        # Must clean up within test since MockDB is shared across tests for performance reasons
+        domain_request_started.delete()
+        domain_request_submitted.delete()
+        domain_request_in_review.delete()
+        domain_request_withdrawn.delete()
+        domain_request_approved.delete()
+        domain_request_rejected.delete()
+        domain_request_ineligible.delete()
+        domain_deleted.delete()
 
 class AuditedAdminTest(TestCase):
     def setUp(self):

src/registrar/tests/test_reports.py

@@ -29,10 +29,15 @@ from .common import MockDb, MockEppLib, less_console_noise, get_time_aware_date
 
 
 class CsvReportsTest(MockDb):
-    """Tests to determine if we are uploading our reports correctly"""
+    """Tests to determine if we are uploading our reports correctly.
+    These tests use MockDb, which runs setUpClass and tearDownClass to handle
+    creation of fake domain data.
+    setUp and tearDown in this class set up client and factory.
+    This is for efficiency purposes when running tests, but
+    also means that care must be taken to clean up within each test.
+    """
 
     def setUp(self):
-        """Create fake domain data"""
         super().setUp()
         self.client = Client(HTTP_HOST="localhost:8080")
         self.factory = RequestFactory()
@@ -196,11 +201,12 @@ class CsvReportsTest(MockDb):
 
 
 class ExportDataTest(MockDb, MockEppLib):
-    def setUp(self):
-        super().setUp()
-
-    def tearDown(self):
-        super().tearDown()
+    """Test the ExportData class from csv_export.
+    These tests use MockDb, which runs setUpClass and tearDownClass.
+    setUp and tearDown in this test run from MockEppLib to set up EPP mocks.
+    This is for efficiency purposes when running tests, but
+    also means that care must be taken to clean up within each test.
+    """
 
     def test_export_domains_to_writer_security_emails_and_first_ready(self):
         """Test that export_domains_to_writer returns the