Ensure error is raised on Python 2

python-attrs · Jan 3, 2020 · 2018a3e · 2018a3e
1 parent e781385
commit 2018a3e
Showing 1 changed file with 9 additions and 0 deletions.
diff --git a/tests/test_make.py b/tests/test_make.py
@@ -1572,6 +1572,15 @@ class C(object):
         )
 
 
+@pytest.mark.skipif(not PY2, reason="Needs to be only caught on Python 2.")
+def test_auto_detect_raises_on_py2():
+    """
+    Trying to pass auto_detect=True to attr.s raises PythonTooOldError.
+    """
+    with pytest.raises(PythonTooOldError):
+        attr.s(auto_detect=True)
+
+
 @pytest.mark.skipif(PY2, reason="Auto-detection is Python 3-only.")
 class TestAutoDetect:
     def test_determine_detects_non_presence_correctly(self):