1 files changed, 14 insertions, 0 deletions
diff --git a/_test/test_deprecation.py b/_test/test_deprecation.py
new file mode 100644
index 0000000..c6ed62e
--- /dev/null
+++ b/_test/test_deprecation.py
@@ -0,0 +1,14 @@
+# coding: utf-8
+
+import sys
+
+import pytest  # NOQA
+
+
+@pytest.mark.skipif(
+    sys.version_info < (3, 7) or sys.version_info >= (3, 9),
+    reason='collections not available?',
+)
+def test_collections_deprecation():
+    with pytest.warns(DeprecationWarning):
+        from collections import Hashable  # NOQA