Merge pull request #295 from dtabuenc/fix-pre-release-sorting

Fix problem in sorting pre-release-tags

Author: gep13

GitVersionCore.Tests/SemanticVersionTests.cs

@@ -65,6 +65,8 @@ public void LegacySemVerTest()
     public void VersionSorting()
     {
         SemanticVersion.Parse("1.0.0").ShouldBeGreaterThan(SemanticVersion.Parse("1.0.0-beta"));
+        SemanticVersion.Parse("1.0.0-beta.2").ShouldBeGreaterThan(SemanticVersion.Parse("1.0.0-beta.1"));
+        SemanticVersion.Parse("1.0.0-beta.1").ShouldBeLessThan(SemanticVersion.Parse("1.0.0-beta.2"));
     }
 
     [Test]

GitVersionCore/SemanticVersionPreReleaseTag.cs

@@ -106,7 +106,7 @@ public int CompareTo(SemanticVersionPreReleaseTag other)
                 return -1;
             }
 
-            var nameComparison = StringComparer.InvariantCultureIgnoreCase.Compare(Name, other);
+            var nameComparison = StringComparer.InvariantCultureIgnoreCase.Compare(Name, other.Name);
             if (nameComparison != 0)
                 return nameComparison;