From 7f9f33be1c9d89f203613e9d1a54ad2767d1458a Mon Sep 17 00:00:00 2001
From: Adam Dangoor <adamdangoor@gmail.com>
Date: Thu, 18 Sep 2025 12:47:27 +0100
Subject: [PATCH 1/2] Use incorrect type for a pytest fixture to demonstrate
 beartype catching the error

---
 tests/test_vws.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/test_vws.py b/tests/test_vws.py
index e16eff55..5f8e9ea9 100644
--- a/tests/test_vws.py
+++ b/tests/test_vws.py
@@ -36,7 +36,7 @@ class TestAddTarget:
     )
     @pytest.mark.parametrize(argnames="active_flag", argvalues=[True, False])
     def test_add_target(
-        vws_client: VWS,
+        vws_client: int,
         image: io.BytesIO | BinaryIO,
         application_metadata: bytes | None,
         cloud_reco_client: CloudRecoService,

From 34c7fdc3abbee8343c9bc8913e02980058fab6c3 Mon Sep 17 00:00:00 2001
From: Adam Dangoor <adamdangoor@gmail.com>
Date: Thu, 18 Sep 2025 13:02:54 +0100
Subject: [PATCH 2/2] Use pytest-beartype rather than decorating test functions

---
 conftest.py    | 10 ----------
 pyproject.toml |  2 ++
 2 files changed, 2 insertions(+), 10 deletions(-)

diff --git a/conftest.py b/conftest.py
index 1d776f8d..15b489ec 100644
--- a/conftest.py
+++ b/conftest.py
@@ -9,7 +9,6 @@
 from pathlib import Path
 
 import pytest
-from beartype import beartype
 from mock_vws import MockVWS
 from mock_vws.database import VuforiaDatabase
 from sybil import Sybil
@@ -20,15 +19,6 @@
 )
 
 
-def pytest_collection_modifyitems(items: list[pytest.Item]) -> None:
-    """
-    Apply the beartype decorator to all collected test functions.
-    """
-    for item in items:
-        if isinstance(item, pytest.Function):
-            item.obj = beartype(obj=item.obj)
-
-
 @pytest.fixture(name="make_image_file")
 def fixture_make_image_file(
     high_quality_image: io.BytesIO,
diff --git a/pyproject.toml b/pyproject.toml
index d3d24c83..58cbd5f5 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -57,6 +57,7 @@ optional-dependencies.dev = [
     "pyright==1.1.405",
     "pyroma==5.0",
     "pytest==8.4.2",
+    "pytest-beartype>=0.2.0",
     "pytest-cov==7.0.0",
     "pyyaml==6.0.2",
     "ruff==0.13.0",
@@ -316,6 +317,7 @@ max_supported_python = "3.13"
 
 xfail_strict = true
 log_cli = true
+addopts = "--beartype-packages=tests"
 
 [tool.coverage.run]