From a81535a364ca2d5aa277977e53c4e2302cae8ea2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Andr=C3=A9=20Elimelek=20de=20Weber?=
 <38350057+andrekwr@users.noreply.github.com>
Date: Fri, 3 Dec 2021 21:11:36 -0300
Subject: BUG: Fix types of errors raised by genfromtxt (#20389)

---
 numpy/lib/tests/test_io.py | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'numpy/lib/tests/test_io.py')

diff --git a/numpy/lib/tests/test_io.py b/numpy/lib/tests/test_io.py
index 5201b8e6e..c19660cf0 100644
--- a/numpy/lib/tests/test_io.py
+++ b/numpy/lib/tests/test_io.py
@@ -1425,6 +1425,10 @@ class TestFromTxt(LoadTxtBase):
                             ('F', 25.0, 60.0)], dtype=descriptor)
         assert_equal(test, control)
 
+    def test_bad_fname(self):
+        with pytest.raises(TypeError, match='fname must be a string,'):
+            np.genfromtxt(123)
+
     def test_commented_header(self):
         # Check that names can be retrieved even if the line is commented out.
         data = TextIO("""
-- 
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