check invalid versions raise

Author: keewis

minimum_versions/tests/test_environments.py

@@ -233,3 +233,8 @@ def test_parse_spec(self, name, version_text, expected_spec, expected_warnings):
         assert actual_spec == expected_spec
         assert actual_name == name
         assert actual_warnings == expected_warnings
+
+    @pytest.mark.parametrize("version_text", ("~1.3", "^2.1", "<1.1"))
+    def test_parse_spec_error(self, version_text):
+        with pytest.raises(ValueError, match="Unknown version format: .*"):
+            environments.pixi.parse_spec("package", version_text)