Merge pull request #18173 from BvB93/clear_cache

TST: Clear the mypy cache before running any typing tests

1 files changed, 10 insertions, 0 deletions

diff --git a/numpy/typing/tests/test_typing.py b/numpy/typing/tests/test_typing.py
index 361688c5d..18520a757 100644
--- a/numpy/typing/tests/test_typing.py
+++ b/numpy/typing/tests/test_typing.py
@@ -2,6 +2,7 @@ import importlib.util
 import itertools
 import os
 import re
+import shutil
 from collections import defaultdict
 from typing import Optional, IO, Dict, List
 
@@ -25,6 +26,15 @@ MYPY_INI = os.path.join(DATA_DIR, "mypy.ini")
 CACHE_DIR = os.path.join(DATA_DIR, ".mypy_cache")
 
 
+@pytest.mark.slow
+@pytest.mark.skipif(NO_MYPY, reason="Mypy is not installed")
+@pytest.fixture(scope="session", autouse=True)
+def clear_cache() -> None:
+    """Clears the mypy cache before running any of the typing tests."""
+    if os.path.isdir(CACHE_DIR):
+        shutil.rmtree(CACHE_DIR)
+
+
 def get_test_cases(directory):
     for root, _, files in os.walk(directory):
         for fname in files: