Enable debug mode in tests.

Debug mode allows route integration tests to raise explicit exceptions on
errors, instead of returning error pages. Some portions of the test
suite need to be able to ignore exceptions (the response is not under
test) so they use a separate pytest fixture version of the app and
client that are configured with debug disabled, as it would be in
production.

tests/routes/portfolios/test_admin.py

@@ -1,5 +1,5 @@
 from flask import url_for
-from unittest.mock import Mock
+from unittest.mock import MagicMock
 
 from atst.domain.permission_sets import PermissionSets
 from atst.domain.portfolio_roles import PortfolioRoles
@@ -129,7 +129,7 @@ def test_rerender_admin_page_if_member_perms_form_does_not_validate(
         "members_permissions-0-perms_portfolio_mgmt": "view_portfolio_admin",
     }
 
-    mock_route = Mock()
+    mock_route = MagicMock(return_value=("", 200, {}))
     monkeypatch.setattr("atst.routes.portfolios.admin.render_admin_page", mock_route)
     client.post(
         url_for("portfolios.edit_members", portfolio_id=portfolio.id), data=form_data

tests/routes/portfolios/test_index.py

@@ -1,4 +1,5 @@
 from flask import url_for
+import pytest
 
 from tests.factories import (
     random_future_date,
@@ -9,7 +10,7 @@ from tests.factories import (
     UserFactory,
 )
 from atst.utils.localization import translate
-from atst.domain.portfolios import Portfolios
+from atst.domain.portfolios import Portfolios, PortfolioDeletionApplicationsExistError
 from atst.domain.portfolios.query import PortfoliosQuery
 
 
@@ -128,7 +129,7 @@ def test_delete_portfolio_success(client, user_session):
     assert len(Portfolios.for_user(user=owner)) == 0
 
 
-def test_delete_portfolio_failure(client, user_session):
+def test_delete_portfolio_failure(no_debug_client, user_session):
     portfolio = PortfolioFactory.create()
     application = ApplicationFactory.create(portfolio=portfolio)
     owner = portfolio.owner
@@ -136,7 +137,7 @@ def test_delete_portfolio_failure(client, user_session):
 
     assert len(Portfolios.for_user(user=owner)) == 1
 
-    response = client.post(
+    response = no_debug_client.post(
         url_for("portfolios.delete_portfolio", portfolio_id=portfolio.id)
     )
 

tests/routes/test_errors.py

@@ -1,6 +1,8 @@
 import pytest
 from flask import url_for
-from copy import copy
+
+from atst.app import make_config, make_app
+
 from tests.factories import UserFactory
 
 
@@ -24,14 +26,28 @@ def test_csrf_error(csrf_enabled_app, client):
     assert "Log in required" in body
 
 
-def test_errors_generate_notifications(app, client, user_session, notification_sender):
-    user_session(UserFactory.create())
-    new_app = copy(app)
+@pytest.fixture
+def blowup_app(notification_sender):
+    _blowup_app = make_app(make_config(direct_config={"DEBUG": False}))
+    _blowup_app.notification_sender = notification_sender
 
-    @new_app.route("/throw")
+    @_blowup_app.route("/throw")
     def throw():
         raise ValueError()
 
-    new_app.test_client().get("/throw")
+    yield _blowup_app
+
+
+@pytest.fixture
+def blowup_client(blowup_app):
+    yield blowup_app.test_client()
+
+
+def test_errors_generate_notifications(
+    blowup_client, client, user_session, notification_sender
+):
+    user_session(UserFactory.create())
+
+    blowup_client.get("/throw")
 
     notification_sender.send.assert_called_once()