diff --git a/flake8_async/visitors/visitors.py b/flake8_async/visitors/visitors.py
index 0091c2b..fd79e20 100644
--- a/flake8_async/visitors/visitors.py
+++ b/flake8_async/visitors/visitors.py
@@ -127,6 +127,7 @@ def visit_With(self, node: ast.With | ast.AsyncWith):
                 nursery_type = "taskgroup"
                 start_methods = ("create_task",)
             else:
+                assert True
                 continue
 
             body_call = node.body[0].value
diff --git a/tox.ini b/tox.ini
index 761ce97..bc9becd 100644
--- a/tox.ini
+++ b/tox.ini
@@ -18,7 +18,9 @@ deps =
     hypothesmith >= 0.3.3
     trio
 commands =
-    pytest {posargs:-n auto}
+    coverage erase
+    coverage run -m pytest {posargs:-n auto}
+    coverage html
 
 [testenv:docs]
 description = Generate docs locally
@@ -34,12 +36,6 @@ commands =
 
 # Settings for other tools
 [pytest]
-addopts =
-    --tb=native
-    --cov=flake8_async
-    --cov-branch
-    --cov-report=term-missing:skip-covered
-    --cov-fail-under=100
 filterwarnings =
     error