Make nuget version hashable

Signed-off-by: Keshav Priyadarshi <git@keshav.space>

Author: keshav-space

src/univers/nuget.py

@@ -175,6 +175,14 @@ def __lt__(self, other):
         # Revision is the same, so ignore it for comparison purposes.
         return self._base_semver < other._base_semver
 
+    def __hash__(self):
+        return hash(
+            (
+                self._base_semver.to_tuple(),
+                self._revision,
+            )
+        )
+
     @classmethod
     def from_string(cls, str_version):
         if not str_version:

tests/test_nuget.py

@@ -19,6 +19,7 @@
 
 import unittest
 
+from univers.nuget import Version
 from univers.versions import NugetVersion
 
 
@@ -77,3 +78,13 @@ def test_less(self):
         self.check_order(self.assertLess, "1.0.0-pre", "1.0.0.1-alpha")
         self.check_order(self.assertLess, "1.0.0", "1.0.0.1-alpha")
         self.check_order(self.assertLess, "0.9.9.1", "1.0.0")
+
+    def test_NugetVersion_hash(self):
+        vers1 = NugetVersion("1.0.1+23")
+        vers2 = NugetVersion("1.0.1+23")
+        assert hash(vers1) == hash(vers2)
+
+    def test_nuget_semver_hash(self):
+        vers1 = Version.from_string("51.0.0+2")
+        vers2 = Version.from_string("51.0.0+2")
+        assert hash(vers1) == hash(vers2)

tests/test_python_semver.py

@@ -0,0 +1,17 @@
+#
+# Copyright (c) nexB Inc. and others.
+# SPDX-License-Identifier: Apache-2.0
+#
+# Visit https://aboutcode.org and https://github.com/nexB/univers for support and download.
+
+from unittest import TestCase
+
+import semver
+
+
+class TestPythonSemver(TestCase):
+    def test_semver_hash(self):
+        # python-semver doesn't consider build while hashing
+        vers1 = semver.VersionInfo.parse("1.2.3")
+        vers2 = semver.VersionInfo.parse("1.2.3+1")
+        assert hash(vers1) == hash(vers2)