Capture expectation of invalid version warning

1 files changed, 10 insertions, 0 deletions

diff --git a/setuptools/tests/test_dist_info.py b/setuptools/tests/test_dist_info.py
index 7f0e01cc..1387fcd1 100644
--- a/setuptools/tests/test_dist_info.py
+++ b/setuptools/tests/test_dist_info.py
@@ -1,6 +1,7 @@
 """Test .dist-info style distributions.
 """
 import pathlib
+import re
 import subprocess
 import sys
 from functools import partial
@@ -82,6 +83,15 @@ class TestDistInfo:
             ]
             assert d.extras == ['baz']
 
+    def test_invalid_version(self, tmp_path):
+        config = "[metadata]\nname=proj\nversion=42\n[egg_info]\ntag_build=invalid!!!\n"
+        (tmp_path / "setup.cfg").write_text(config, encoding="utf-8")
+        msg = re.compile("invalid version", re.M | re.I)
+        output = run_command("dist_info", cwd=tmp_path)
+        assert msg.search(output)
+        dist_info = next(tmp_path.glob("*.dist-info"))
+        assert dist_info.name.startswith("proj-42")
+
 
 class TestWheelCompatibility:
     SETUPCFG = DALS("""