1 files changed, 33 insertions, 0 deletions
diff --git a/numpy/typing/tests/test_isfile.py b/numpy/typing/tests/test_isfile.py
new file mode 100644
index 000000000..569f05435
--- /dev/null
+++ b/numpy/typing/tests/test_isfile.py
@@ -0,0 +1,33 @@
+import os
+from pathlib import Path
+
+import numpy as np
+from numpy.testing import assert_
+
+ROOT = Path(np.__file__).parents[0]
+FILES = [
+    ROOT / "py.typed",
+    ROOT / "__init__.pyi",
+    ROOT / "char.pyi",
+    ROOT / "ctypeslib.pyi",
+    ROOT / "emath.pyi",
+    ROOT / "rec.pyi",
+    ROOT / "core" / "__init__.pyi",
+    ROOT / "distutils" / "__init__.pyi",
+    ROOT / "f2py" / "__init__.pyi",
+    ROOT / "fft" / "__init__.pyi",
+    ROOT / "lib" / "__init__.pyi",
+    ROOT / "linalg" / "__init__.pyi",
+    ROOT / "ma" / "__init__.pyi",
+    ROOT / "matrixlib" / "__init__.pyi",
+    ROOT / "polynomial" / "__init__.pyi",
+    ROOT / "random" / "__init__.pyi",
+    ROOT / "testing" / "__init__.pyi",
+]
+
+
+class TestIsFile:
+    def test_isfile(self):
+        """Test if all ``.pyi`` files are properly installed."""
+        for file in FILES:
+            assert_(os.path.isfile(file))