test: add test case for normalize_version (#1339)

### Changes are visible to end-users: no

### Test plan

- Covered by existing test cases
- New test cases added

Author: jbedard

uv/private/normalize_version_test.bzl

@@ -25,8 +25,24 @@ def _normalize_version_epoch_test_impl(ctx):
 
 normalize_version_epoch_test = unittest.make(_normalize_version_epoch_test_impl)
 
+def _normalize_version_local_test_impl(ctx):
+    """PEP 440 local versions (e.g. ``0.4.25+cuda11.cudnn86``) must not leak ``+`` into repo names."""
+    env = unittest.begin(ctx)
+    version = "0.4.25+cuda11.cudnn86"
+    out = normalize_version(version)
+    asserts.true(
+        env,
+        _is_valid_repo_name_component(out),
+        "normalize_version(%r) = %r contains characters invalid in a Bazel repo name" % (version, out),
+    )
+    asserts.false(env, "+" in out, "normalize_version(%r) = %r must not retain '+'" % (version, out))
+    return unittest.end(env)
+
+normalize_version_local_test = unittest.make(_normalize_version_local_test_impl)
+
 def normalize_version_test_suite():
     unittest.suite(
         "normalize_version_tests",
         normalize_version_epoch_test,
+        normalize_version_local_test,
     )