Add more tests of version comparison

run_unittests.py

@@ -39,7 +39,7 @@ from mesonbuild.interpreter import Interpreter, ObjectHolder
 from mesonbuild.mesonlib import (
     is_windows, is_osx, is_cygwin, is_dragonflybsd, is_openbsd,
     windows_proof_rmtree, python_command, version_compare,
-    BuildDirLock
+    BuildDirLock, Version
 )
 from mesonbuild.environment import detect_ninja
 from mesonbuild.mesonlib import MesonException, EnvironmentException
@@ -698,6 +698,107 @@ class InternalTests(unittest.TestCase):
         ]:
             self.assertEqual(comparefunc(a, b)[0], result)
 
+        for (a, b, result) in [
+                # examples from https://fedoraproject.org/wiki/Archive:Tools/RPM/VersionComparison
+                ("1.0010", "1.9", 1),
+                ("1.05", "1.5", 0),
+                ("1.0", "1", 1),
+                ("2.50", "2.5", 1),
+                ("fc4", "fc.4", 0),
+                ("FC5", "fc4", -1),
+                ("2a", "2.0", -1),
+                ("1.0", "1.fc4", 1),
+                ("3.0.0_fc", "3.0.0.fc", 0),
+                # from RPM tests
+                ("1.0", "1.0", 0),
+                ("1.0", "2.0", -1),
+                ("2.0", "1.0", 1),
+                ("2.0.1", "2.0.1", 0),
+                ("2.0", "2.0.1", -1),
+                ("2.0.1", "2.0", 1),
+                ("2.0.1a", "2.0.1a", 0),
+                ("2.0.1a", "2.0.1", 1),
+                ("2.0.1", "2.0.1a", -1),
+                ("5.5p1", "5.5p1", 0),
+                ("5.5p1", "5.5p2", -1),
+                ("5.5p2", "5.5p1", 1),
+                ("5.5p10", "5.5p10", 0),
+                ("5.5p1", "5.5p10", -1),
+                ("5.5p10", "5.5p1", 1),
+                ("10xyz", "10.1xyz", -1),
+                ("10.1xyz", "10xyz", 1),
+                ("xyz10", "xyz10", 0),
+                ("xyz10", "xyz10.1", -1),
+                ("xyz10.1", "xyz10", 1),
+                ("xyz.4", "xyz.4", 0),
+                ("xyz.4", "8", -1),
+                ("8", "xyz.4", 1),
+                ("xyz.4", "2", -1),
+                ("2", "xyz.4", 1),
+                ("5.5p2", "5.6p1", -1),
+                ("5.6p1", "5.5p2", 1),
+                ("5.6p1", "6.5p1", -1),
+                ("6.5p1", "5.6p1", 1),
+                ("6.0.rc1", "6.0", 1),
+                ("6.0", "6.0.rc1", -1),
+                ("10b2", "10a1", 1),
+                ("10a2", "10b2", -1),
+                ("1.0aa", "1.0aa", 0),
+                ("1.0a", "1.0aa", -1),
+                ("1.0aa", "1.0a", 1),
+                ("10.0001", "10.0001", 0),
+                ("10.0001", "10.1", 0),
+                ("10.1", "10.0001", 0),
+                ("10.0001", "10.0039", -1),
+                ("10.0039", "10.0001", 1),
+                ("4.999.9", "5.0", -1),
+                ("5.0", "4.999.9", 1),
+                ("20101121", "20101121", 0),
+                ("20101121", "20101122", -1),
+                ("20101122", "20101121", 1),
+                ("2_0", "2_0", 0),
+                ("2.0", "2_0", 0),
+                ("2_0", "2.0", 0),
+                ("a", "a", 0),
+                ("a+", "a+", 0),
+                ("a+", "a_", 0),
+                ("a_", "a+", 0),
+                ("+a", "+a", 0),
+                ("+a", "_a", 0),
+                ("_a", "+a", 0),
+                ("+_", "+_", 0),
+                ("_+", "+_", 0),
+                ("_+", "_+", 0),
+                ("+", "_", 0),
+                ("_", "+", 0),
+                # other tests
+                ('0.99.beta19', '0.99.beta14', 1),
+                ("1.0.0", "2.0.0", -1),
+                (".0.0", "2.0.0", -1),
+                ("alpha", "beta", -1),
+                ("1.0", "1.0.0", -1),
+                ("2.456", "2.1000", -1),
+                ("2.1000", "3.111", -1),
+                ("2.001", "2.1", 0),
+                ("2.34", "2.34", 0),
+                ("6.1.2", "6.3.8", -1),
+                ("1.7.3.0", "2.0.0", -1),
+                ("2.24.51", "2.25", -1),
+                ("2.1.5+20120813+gitdcbe778", "2.1.5", 1),
+                ("3.4.1", "3.4b1", 1),
+                ("041206", "200090325", -1),
+                ("0.6.2+git20130413", "0.6.2", 1),
+                ("2.6.0+bzr6602", "2.6.0", 1),
+                ("2.6.0", "2.6b2", 1),
+                ("2.6.0+bzr6602", "2.6b2x", 1),
+                ("0.6.7+20150214+git3a710f9", "0.6.7", 1),
+                ("15.8b", "15.8.0.1", -1),
+                ("1.2rc1", "1.2.0", -1),
+        ]:
+            ver_a = Version(a)
+            ver_b = Version(b)
+            self.assertEqual(ver_a.__cmp__(ver_b), result)
+            self.assertEqual(ver_b.__cmp__(ver_a), -result)
 
 @unittest.skipIf(is_tarball(), 'Skipping because this is a tarball release')
 class DataTests(unittest.TestCase):