Modernize provider support

tests/test_version.py

@@ -216,3 +216,17 @@ class TestCompareVersions:
             compare_versions("invalid", "1.0.0")
         with pytest.raises(ValueError):
             compare_versions("1.0.0", "invalid")
+
+
+class TestRegexEdgeCases:
+    """Tests for semver regex edge cases."""
+
+    def test_dot_separators_required(self):
+        assert Version.parse("1x2x3") is None
+        assert Version.parse("1-2-3") is None
+
+    def test_double_dot_rejected(self):
+        assert Version.parse("1..2.3") is None
+
+    def test_trailing_dot_rejected(self):
+        assert Version.parse("1.2.3.") is None