3 files changed, 1151 insertions, 0 deletions
diff --git a/src/libs/test/WixToolsetTest.Versioning/VerUtilTestsFixture.cs b/src/libs/test/WixToolsetTest.Versioning/VerUtilTestsFixture.cs
new file mode 100644
index 00000000..3dff28c6
--- /dev/null
+++ b/src/libs/test/WixToolsetTest.Versioning/VerUtilTestsFixture.cs
@@ -0,0 +1,683 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+namespace WixToolsetTest.Versioning
+{
+    using System;
+    using WixToolset.Versioning;
+    using Xunit;
+    public class VerUtilTestsFixture
+    {
+        [Fact]
+        public void VerCompareVersionsTreatsMissingRevisionAsZero()
+        {
+            var version1 = WixVersion.Parse("1.2.3.4");
+            var version2 = WixVersion.Parse("1.2.3");
+            var version3 = WixVersion.Parse("1.2.3.0");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(1U, version1.Major);
+            Assert.Equal(2U, version1.Minor);
+            Assert.Equal(3U, version1.Patch);
+            Assert.Equal(4U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.True(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(1U, version2.Major);
+            Assert.Equal(2U, version2.Minor);
+            Assert.Equal(3U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Null(version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.True(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(1U, version3.Major);
+            Assert.Equal(2U, version3.Minor);
+            Assert.Equal(3U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Null(version3.Labels);
+            Assert.Null(version3.Metadata);
+            Assert.False(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.True(version3.HasMinor);
+            Assert.True(version3.HasPatch);
+            Assert.True(version3.HasRevision);
+            Assert.Equal(1, version1.CompareTo(version2));
+            Assert.Equal(0, version3.CompareTo(version2));
+        }
+        [Fact]
+        public void VerCompareVersionsTreatsNumericReleaseLabelsAsNumbers()
+        {
+            var version1 = WixVersion.Parse("1.0-2.0");
+            var version2 = WixVersion.Parse("1.0-19");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(1U, version1.Major);
+            Assert.Equal(0U, version1.Minor);
+            Assert.Equal(0U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Equal(2, version1.Labels.Length);
+            Assert.Equal(2U, version1.Labels[0].Numeric);
+            Assert.Equal("2", version1.Labels[0].Label);
+            Assert.Equal(0U, version1.Labels[1].Numeric);
+            Assert.Equal("0", version1.Labels[1].Label);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.False(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(1U, version2.Major);
+            Assert.Equal(0U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Single(version2.Labels);
+            Assert.Equal(19U, version2.Labels[0].Numeric);
+            Assert.Equal("19", version2.Labels[0].Label);
+            Assert.Null(version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.False(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, -1);
+        }
+        [Fact]
+        public void VerCompareVersionsHandlesNormallyInvalidVersions()
+        {
+            var version1 = WixVersion.Parse("10.-4.0");
+            var version2 = WixVersion.Parse("10.-2.0");
+            var version3 = WixVersion.Parse("0");
+            var version4 = WixVersion.Parse("");
+            var version5 = WixVersion.Parse("10-2");
+            var version6 = WixVersion.Parse("10-4.@");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(10U, version1.Major);
+            Assert.Equal(0U, version1.Minor);
+            Assert.Equal(0U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Equal("-4.0", version1.Metadata);
+            Assert.True(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.False(version1.HasMinor);
+            Assert.False(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(10U, version2.Major);
+            Assert.Equal(0U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Equal("-2.0", version2.Metadata);
+            Assert.True(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.False(version2.HasMinor);
+            Assert.False(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(0U, version3.Major);
+            Assert.Equal(0U, version3.Minor);
+            Assert.Equal(0U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Null(version3.Labels);
+            Assert.Null(version3.Metadata);
+            Assert.False(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.False(version3.HasMinor);
+            Assert.False(version3.HasPatch);
+            Assert.False(version3.HasRevision);
+            Assert.Null(version4.Prefix);
+            Assert.Equal(0U, version4.Major);
+            Assert.Equal(0U, version4.Minor);
+            Assert.Equal(0U, version4.Patch);
+            Assert.Equal(0U, version4.Revision);
+            Assert.Null(version4.Labels);
+            Assert.Equal(String.Empty, version4.Metadata);
+            Assert.True(version4.Invalid);
+            Assert.False(version4.HasMajor);
+            Assert.False(version4.HasMinor);
+            Assert.False(version4.HasPatch);
+            Assert.False(version4.HasRevision);
+            Assert.Null(version5.Prefix);
+            Assert.Equal(10U, version5.Major);
+            Assert.Equal(0U, version5.Minor);
+            Assert.Equal(0U, version5.Patch);
+            Assert.Equal(0U, version5.Revision);
+            Assert.Single(version5.Labels);
+            Assert.Equal(2U, version5.Labels[0].Numeric);
+            Assert.Equal("2", version5.Labels[0].Label);
+            Assert.Null(version5.Metadata);
+            Assert.False(version5.Invalid);
+            Assert.True(version5.HasMajor);
+            Assert.False(version5.HasMinor);
+            Assert.False(version5.HasPatch);
+            Assert.False(version5.HasRevision);
+            Assert.Null(version6.Prefix);
+            Assert.Equal(10U, version6.Major);
+            Assert.Equal(0U, version6.Minor);
+            Assert.Equal(0U, version6.Patch);
+            Assert.Equal(0U, version6.Revision);
+            Assert.Single(version6.Labels);
+            Assert.Equal(4U, version6.Labels[0].Numeric);
+            Assert.Equal("4", version6.Labels[0].Label);
+            Assert.Equal("@", version6.Metadata);
+            Assert.True(version6.Invalid);
+            Assert.True(version6.HasMajor);
+            Assert.False(version6.HasMinor);
+            Assert.False(version6.HasPatch);
+            Assert.False(version6.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 1);
+            TestVerutilCompareParsedVersions(version3, version4, 1);
+            TestVerutilCompareParsedVersions(version5, version6, -1);
+        }
+        [Fact]
+        public void VerCompareVersionsTreatsHyphenAsVersionSeparator()
+        {
+            var version1 = WixVersion.Parse("0.0.1-a");
+            var version2 = WixVersion.Parse("0-2");
+            var version3 = WixVersion.Parse("1-2");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(0U, version1.Major);
+            Assert.Equal(0U, version1.Minor);
+            Assert.Equal(1U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Single(version1.Labels);
+            Assert.Null(version1.Labels[0].Numeric);
+            Assert.Equal("a", version1.Labels[0].Label);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(0U, version2.Major);
+            Assert.Equal(0U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Single(version2.Labels);
+            Assert.Equal(2U, version2.Labels[0].Numeric);
+            Assert.Equal("2", version2.Labels[0].Label);
+            Assert.Null(version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.False(version2.HasMinor);
+            Assert.False(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(1U, version3.Major);
+            Assert.Equal(0U, version3.Minor);
+            Assert.Equal(0U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Single(version3.Labels);
+            Assert.Equal(2U, version3.Labels[0].Numeric);
+            Assert.Equal("2", version3.Labels[0].Label);
+            Assert.Null(version3.Metadata);
+            Assert.False(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.False(version3.HasMinor);
+            Assert.False(version3.HasPatch);
+            Assert.False(version3.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 1);
+            TestVerutilCompareParsedVersions(version1, version3, -1);
+        }
+        [Fact]
+        public void VerCompareVersionsIgnoresLeadingZeroes()
+        {
+            var version1 = WixVersion.Parse("0.01-a.1");
+            var version2 = WixVersion.Parse("0.1.0-a.1");
+            var version3 = WixVersion.Parse("0.1-a.b.0");
+            var version4 = WixVersion.Parse("0.1.0-a.b.000");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(0U, version1.Major);
+            Assert.Equal(1U, version1.Minor);
+            Assert.Equal(0U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Equal(2, version1.Labels.Length);
+            Assert.Null(version1.Labels[0].Numeric);
+            Assert.Equal("a", version1.Labels[0].Label);
+            Assert.Equal(1U, version1.Labels[1].Numeric);
+            Assert.Equal("1", version1.Labels[1].Label);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.False(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(0U, version2.Major);
+            Assert.Equal(1U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Equal(2, version2.Labels.Length);
+            Assert.Null(version2.Labels[0].Numeric);
+            Assert.Equal("a", version2.Labels[0].Label);
+            Assert.Equal(1U, version2.Labels[1].Numeric);
+            Assert.Equal("1", version2.Labels[1].Label);
+            Assert.Null(version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.True(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(0U, version3.Major);
+            Assert.Equal(1U, version3.Minor);
+            Assert.Equal(0U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Equal(3, version3.Labels.Length);
+            Assert.Null(version3.Labels[0].Numeric);
+            Assert.Equal("a", version3.Labels[0].Label);
+            Assert.Null(version3.Labels[1].Numeric);
+            Assert.Equal("b", version3.Labels[1].Label);
+            Assert.Equal(0U, version3.Labels[2].Numeric);
+            Assert.Equal("0", version3.Labels[2].Label);
+            Assert.Null(version3.Metadata);
+            Assert.False(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.True(version3.HasMinor);
+            Assert.False(version3.HasPatch);
+            Assert.False(version3.HasRevision);
+            Assert.Null(version4.Prefix);
+            Assert.Equal(0U, version4.Major);
+            Assert.Equal(1U, version4.Minor);
+            Assert.Equal(0U, version4.Patch);
+            Assert.Equal(0U, version4.Revision);
+            Assert.Equal(3, version4.Labels.Length);
+            Assert.Null(version4.Labels[0].Numeric);
+            Assert.Equal("a", version4.Labels[0].Label);
+            Assert.Null(version4.Labels[1].Numeric);
+            Assert.Equal("b", version4.Labels[1].Label);
+            Assert.Equal(0U, version4.Labels[2].Numeric);
+            Assert.Equal("000", version4.Labels[2].Label);
+            Assert.Null(version4.Metadata);
+            Assert.False(version4.Invalid);
+            Assert.True(version4.HasMajor);
+            Assert.True(version4.HasMinor);
+            Assert.True(version4.HasPatch);
+            Assert.False(version4.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 0);
+            TestVerutilCompareParsedVersions(version3, version4, 0);
+        }
+        [Fact]
+        public void VerCompareVersionsTreatsUnexpectedContentAsMetadata()
+        {
+            var version1 = WixVersion.Parse("1.2.3+abcd");
+            var version2 = WixVersion.Parse("1.2.3.abcd");
+            var version3 = WixVersion.Parse("1.2.3.-abcd");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(1U, version1.Major);
+            Assert.Equal(2U, version1.Minor);
+            Assert.Equal(3U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Equal("abcd", version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(1U, version2.Major);
+            Assert.Equal(2U, version2.Minor);
+            Assert.Equal(3U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Equal("abcd", version2.Metadata);
+            Assert.True(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.True(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(1U, version3.Major);
+            Assert.Equal(2U, version3.Minor);
+            Assert.Equal(3U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Null(version3.Labels);
+            Assert.Equal("-abcd", version3.Metadata);
+            Assert.True(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.True(version3.HasMinor);
+            Assert.True(version3.HasPatch);
+            Assert.False(version3.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 1);
+            TestVerutilCompareParsedVersions(version1, version3, 1);
+            TestVerutilCompareParsedVersions(version2, version3, 1);
+        }
+        [Fact]
+        public void VerCompareVersionsIgnoresLeadingV()
+        {
+            var version1 = WixVersion.Parse("10.20.30.40");
+            var version2 = WixVersion.Parse("v10.20.30.40");
+            var version3 = WixVersion.Parse("V10.20.30.40");
+            var version4 = WixVersion.Parse("v10.20.30.40-abc");
+            var version5 = WixVersion.Parse("vvv");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(10U, version1.Major);
+            Assert.Equal(20U, version1.Minor);
+            Assert.Equal(30U, version1.Patch);
+            Assert.Equal(40U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.True(version1.HasRevision);
+            Assert.Equal('v', version2.Prefix);
+            Assert.Equal(10U, version2.Major);
+            Assert.Equal(20U, version2.Minor);
+            Assert.Equal(30U, version2.Patch);
+            Assert.Equal(40U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Null(version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.True(version2.HasPatch);
+            Assert.True(version2.HasRevision);
+            Assert.Equal('V', version3.Prefix);
+            Assert.Equal(10U, version3.Major);
+            Assert.Equal(20U, version3.Minor);
+            Assert.Equal(30U, version3.Patch);
+            Assert.Equal(40U, version3.Revision);
+            Assert.Null(version3.Labels);
+            Assert.Null(version3.Metadata);
+            Assert.False(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.True(version3.HasMinor);
+            Assert.True(version3.HasPatch);
+            Assert.True(version3.HasRevision);
+            Assert.Equal('v', version4.Prefix);
+            Assert.Equal(10U, version4.Major);
+            Assert.Equal(20U, version4.Minor);
+            Assert.Equal(30U, version4.Patch);
+            Assert.Equal(40U, version4.Revision);
+            Assert.Single(version4.Labels);
+            Assert.Null(version4.Labels[0].Numeric);
+            Assert.Equal("abc", version4.Labels[0].Label);
+            Assert.Null(version4.Metadata);
+            Assert.False(version4.Invalid);
+            Assert.True(version4.HasMajor);
+            Assert.True(version4.HasMinor);
+            Assert.True(version4.HasPatch);
+            Assert.True(version4.HasRevision);
+            Assert.Null(version5.Prefix);
+            Assert.Equal(0U, version5.Major);
+            Assert.Equal(0U, version5.Minor);
+            Assert.Equal(0U, version5.Patch);
+            Assert.Equal(0U, version5.Revision);
+            Assert.Null(version5.Labels);
+            Assert.Equal("vvv", version5.Metadata);
+            Assert.True(version5.Invalid);
+            Assert.False(version5.HasMajor);
+            Assert.False(version5.HasMinor);
+            Assert.False(version5.HasPatch);
+            Assert.False(version5.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 0);
+            TestVerutilCompareParsedVersions(version1, version3, 0);
+            TestVerutilCompareParsedVersions(version1, version4, 1);
+        }
+        [Fact]
+        public void VerCompareVersionsHandlesTooLargeNumbers()
+        {
+            var version1 = WixVersion.Parse("4294967295.4294967295.4294967295.4294967295");
+            var version2 = WixVersion.Parse("4294967296.4294967296.4294967296.4294967296");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(4294967295, version1.Major);
+            Assert.Equal(4294967295, version1.Minor);
+            Assert.Equal(4294967295, version1.Patch);
+            Assert.Equal(4294967295, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Null(version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.True(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(0U, version2.Major);
+            Assert.Equal(0U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Equal("4294967296.4294967296.4294967296.4294967296", version2.Metadata);
+            Assert.True(version2.Invalid);
+            Assert.False(version2.HasMajor);
+            Assert.False(version2.HasMinor);
+            Assert.False(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 1);
+        }
+        [Fact]
+        public void VerCompareVersionsIgnoresMetadataForValidVersions()
+        {
+            var version1 = WixVersion.Parse("1.2.3+abc");
+            var version2 = WixVersion.Parse("1.2.3+xyz");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(1U, version1.Major);
+            Assert.Equal(2U, version1.Minor);
+            Assert.Equal(3U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Equal("abc", version1.Metadata);
+            Assert.False(version1.Invalid);
+            Assert.True(version1.HasMajor);
+            Assert.True(version1.HasMinor);
+            Assert.True(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(1U, version2.Major);
+            Assert.Equal(2U, version2.Minor);
+            Assert.Equal(3U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Equal("xyz", version2.Metadata);
+            Assert.False(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.True(version2.HasMinor);
+            Assert.True(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            TestVerutilCompareParsedVersions(version1, version2, 0);
+        }
+        [Fact]
+        public void VerParseVersionTreatsTrailingDotsAsInvalid()
+        {
+            var version1 = WixVersion.Parse(".");
+            var version2 = WixVersion.Parse("1.");
+            var version3 = WixVersion.Parse("2.1.");
+            var version4 = WixVersion.Parse("3.2.1.");
+            var version5 = WixVersion.Parse("4.3.2.1.");
+            var version6 = WixVersion.Parse("5-.");
+            var version7 = WixVersion.Parse("6-a.");
+            Assert.Null(version1.Prefix);
+            Assert.Equal(0U, version1.Major);
+            Assert.Equal(0U, version1.Minor);
+            Assert.Equal(0U, version1.Patch);
+            Assert.Equal(0U, version1.Revision);
+            Assert.Null(version1.Labels);
+            Assert.Equal(".", version1.Metadata);
+            Assert.True(version1.Invalid);
+            Assert.False(version1.HasMajor);
+            Assert.False(version1.HasMinor);
+            Assert.False(version1.HasPatch);
+            Assert.False(version1.HasRevision);
+            Assert.Null(version2.Prefix);
+            Assert.Equal(1U, version2.Major);
+            Assert.Equal(0U, version2.Minor);
+            Assert.Equal(0U, version2.Patch);
+            Assert.Equal(0U, version2.Revision);
+            Assert.Null(version2.Labels);
+            Assert.Empty(version2.Metadata);
+            Assert.True(version2.Invalid);
+            Assert.True(version2.HasMajor);
+            Assert.False(version2.HasMinor);
+            Assert.False(version2.HasPatch);
+            Assert.False(version2.HasRevision);
+            Assert.Null(version3.Prefix);
+            Assert.Equal(2U, version3.Major);
+            Assert.Equal(1U, version3.Minor);
+            Assert.Equal(0U, version3.Patch);
+            Assert.Equal(0U, version3.Revision);
+            Assert.Null(version3.Labels);
+            Assert.Empty(version3.Metadata);
+            Assert.True(version3.Invalid);
+            Assert.True(version3.HasMajor);
+            Assert.True(version3.HasMinor);
+            Assert.False(version3.HasPatch);
+            Assert.False(version3.HasRevision);
+            Assert.Null(version4.Prefix);
+            Assert.Equal(3U, version4.Major);
+            Assert.Equal(2U, version4.Minor);
+            Assert.Equal(1U, version4.Patch);
+            Assert.Equal(0U, version4.Revision);
+            Assert.Null(version4.Labels);
+            Assert.Empty(version4.Metadata);
+            Assert.True(version4.Invalid);
+            Assert.True(version4.HasMajor);
+            Assert.True(version4.HasMinor);
+            Assert.True(version4.HasPatch);
+            Assert.False(version4.HasRevision);
+            Assert.Null(version5.Prefix);
+            Assert.Equal(4U, version5.Major);
+            Assert.Equal(3U, version5.Minor);
+            Assert.Equal(2U, version5.Patch);
+            Assert.Equal(1U, version5.Revision);
+            Assert.Null(version5.Labels);
+            Assert.Empty(version5.Metadata);
+            Assert.True(version5.Invalid);
+            Assert.True(version5.HasMajor);
+            Assert.True(version5.HasMinor);
+            Assert.True(version5.HasPatch);
+            Assert.True(version5.HasRevision);
+            Assert.Null(version6.Prefix);
+            Assert.Equal(5U, version6.Major);
+            Assert.Equal(0U, version6.Minor);
+            Assert.Equal(0U, version6.Patch);
+            Assert.Equal(0U, version6.Revision);
+            Assert.Null(version6.Labels);
+            Assert.Equal(".", version6.Metadata);
+            Assert.True(version6.Invalid);
+            Assert.True(version6.HasMajor);
+            Assert.False(version6.HasMinor);
+            Assert.False(version6.HasPatch);
+            Assert.False(version6.HasRevision);
+            Assert.Null(version7.Prefix);
+            Assert.Equal(6U, version7.Major);
+            Assert.Equal(0U, version7.Minor);
+            Assert.Equal(0U, version7.Patch);
+            Assert.Equal(0U, version7.Revision);
+            Assert.Single(version7.Labels);
+            Assert.Null(version7.Labels[0].Numeric);
+            Assert.Equal("a", version7.Labels[0].Label);
+            Assert.Empty(version7.Metadata);
+            Assert.True(version7.Invalid);
+            Assert.True(version7.HasMajor);
+            Assert.False(version7.HasMinor);
+            Assert.False(version7.HasPatch);
+            Assert.False(version7.HasRevision);
+        }
+        private static void TestVerutilCompareParsedVersions(WixVersion version1, WixVersion version2, int expectedResult)
+        {
+            var result = version1.CompareTo(version2);
+            Assert.Equal(expectedResult, result);
+            result = version2.CompareTo(version1);
+            Assert.Equal(expectedResult, -result);
+            var equal = version1.Equals(version2);
+            Assert.Equal(expectedResult == 0, equal);
+        }
+    }
+}
diff --git a/src/libs/test/WixToolsetTest.Versioning/WixToolsetTest.Versioning.csproj b/src/libs/test/WixToolsetTest.Versioning/WixToolsetTest.Versioning.csproj
new file mode 100644
index 00000000..0ac65fec
--- /dev/null
+++ b/src/libs/test/WixToolsetTest.Versioning/WixToolsetTest.Versioning.csproj
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
+<Project Sdk="Microsoft.NET.Sdk">
+  <PropertyGroup>
+    <TargetFramework>net6.0</TargetFramework>
+    <IsWixTestProject>true</IsWixTestProject>
+  </PropertyGroup>
+  <ItemGroup>
+    <ProjectReference Include="..\..\WixToolset.Versioning\WixToolset.Versioning.csproj" />
+  </ItemGroup>
+  <ItemGroup>
+    <PackageReference Include="WixBuildTools.TestSupport" />
+  </ItemGroup>
+</Project>
diff --git a/src/libs/test/WixToolsetTest.Versioning/WixVerFixture.cs b/src/libs/test/WixToolsetTest.Versioning/WixVerFixture.cs
new file mode 100644
index 00000000..9026cba6
--- /dev/null
+++ b/src/libs/test/WixToolsetTest.Versioning/WixVerFixture.cs
@@ -0,0 +1,451 @@
+// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
+namespace WixToolsetTest.Versioning
+{
+    using System;
+    using System.Linq;
+    using WixToolset.Versioning;
+    using Xunit;
+    public class WixVerFixture
+    {
+        [Fact]
+        public void CannotParseEmptyStringAsVersion()
+        {
+            Assert.False(WixVersion.TryParse(String.Empty, out var version));
+            Assert.Null(version);
+        }
+        [Fact]
+        public void CanParseEmptyStringAsInvalidVersion()
+        {
+            var version = WixVersion.Parse(String.Empty);
+            Assert.Empty(version.Metadata);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CannotParseInvalidStringAsVersion()
+        {
+            Assert.False(WixVersion.TryParse("invalid", out var version));
+            Assert.Null(version);
+        }
+        [Fact]
+        public void CanParseInvalidStringAsInvalidVersion()
+        {
+            var version = WixVersion.Parse("invalid");
+            Assert.Equal("invalid", version.Metadata);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CanParseFourPartVersion()
+        {
+            Assert.True(WixVersion.TryParse("1.2.3.4", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)3, version.Patch);
+            Assert.Equal((uint)4, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseThreePartVersion()
+        {
+            Assert.True(WixVersion.TryParse("1.2.3", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)3, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseFourPartVersionWithTrailingZero()
+        {
+            Assert.True(WixVersion.TryParse("1.2.3.0", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)3, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseNumericReleaseLabels()
+        {
+            Assert.True(WixVersion.TryParse("1.2-19", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)0, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(new[] { "19" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { 19 }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseDottedNumericReleaseLabels()
+        {
+            Assert.True(WixVersion.TryParse("1.2-2.0", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)0, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(new[] { "2", "0" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { 2, 0 }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseHyphenAsVersionSeparator()
+        {
+            Assert.True(WixVersion.TryParse("0.0.1-a", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)0, version.Major);
+            Assert.Equal((uint)0, version.Minor);
+            Assert.Equal((uint)1, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(new[] { "a" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { null }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseIgnoringLeadingZeros()
+        {
+            Assert.True(WixVersion.TryParse("0.01-a.000", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)0, version.Major);
+            Assert.Equal((uint)1, version.Minor);
+            Assert.Equal((uint)0, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(new[] { "a", "000" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { null, 0 }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseMetadata()
+        {
+            Assert.True(WixVersion.TryParse("1.2.3+abcd", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)3, version.Patch);
+            Assert.Equal((uint)0, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Equal("abcd", version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CannotParseUnexpectedContentAsMetadata()
+        {
+            Assert.False(WixVersion.TryParse("1.2.3.abcd", out var version));
+            Assert.Null(version);
+            Assert.False(WixVersion.TryParse("1.2.3.-abcd", out version));
+            Assert.Null(version);
+        }
+        [Fact]
+        public void CanParseUnexpectedContentAsInvalidMetadata()
+        {
+            var version = WixVersion.Parse("1.2.3.abcd");
+            Assert.Equal("abcd", version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("1.2.3.-abcd");
+            Assert.Equal("-abcd", version.Metadata);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CanParseLeadingPrefix()
+        {
+            Assert.True(WixVersion.TryParse("v10.20.30.40", out var version));
+            Assert.Equal('v', version.Prefix);
+            Assert.Equal((uint)10, version.Major);
+            Assert.Equal((uint)20, version.Minor);
+            Assert.Equal((uint)30, version.Patch);
+            Assert.Equal((uint)40, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+            Assert.True(WixVersion.TryParse("V100.200.300.400", out var version2));
+            Assert.Equal('V', version2.Prefix);
+            Assert.Equal((uint)100, version2.Major);
+            Assert.Equal((uint)200, version2.Minor);
+            Assert.Equal((uint)300, version2.Patch);
+            Assert.Equal((uint)400, version2.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Null(version2.Labels);
+            Assert.Null(version2.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseVeryLargeNumbers()
+        {
+            Assert.True(WixVersion.TryParse("4294967295.4294967295.4294967295.4294967295", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal(4294967295, version.Major);
+            Assert.Equal(4294967295, version.Minor);
+            Assert.Equal(4294967295, version.Patch);
+            Assert.Equal(4294967295, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Null(version.Labels);
+            Assert.Null(version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CannotParseTooLargeNumbers()
+        {
+            Assert.False(WixVersion.TryParse("4294967296.4294967296.4294967296.4294967296", out var version));
+            Assert.Null(version);
+        }
+        [Fact]
+        public void CanParseInvalidTooLargeNumbers()
+        {
+            var version = WixVersion.Parse("4294967296.4294967296.4294967296.4294967296");
+            Assert.Equal(0U, version.Major);
+            Assert.Equal("4294967296.4294967296.4294967296.4294967296", version.Metadata);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CanParseInvalidTooLargeNumbersWithPrefix()
+        {
+            var version = WixVersion.Parse("v4294967296.4294967296.4294967296.4294967296");
+            Assert.Equal("v4294967296.4294967296.4294967296.4294967296", version.Metadata);
+            Assert.Null(version.Prefix);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CanParseLabelsWithMetadata()
+        {
+            Assert.True(WixVersion.TryParse("1.2.3.4-a.b.c.d.5+abc123", out var version));
+            Assert.Null(version.Prefix);
+            Assert.Equal((uint)1, version.Major);
+            Assert.Equal((uint)2, version.Minor);
+            Assert.Equal((uint)3, version.Patch);
+            Assert.Equal((uint)4, version.Revision);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Equal(new[] { "a", "b", "c", "d", "5" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { null, null, null, null, 5 }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.Equal("abc123", version.Metadata);
+            Assert.False(version.Invalid);
+        }
+        [Fact]
+        public void CanParseVersionWithTrailingDotsAsInvalid()
+        {
+            var version = WixVersion.Parse(".");
+            Assert.Null(version.Prefix);
+            Assert.Equal(0U, version.Major);
+            Assert.Equal(0U, version.Minor);
+            Assert.Equal(0U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.False(version.HasMajor);
+            Assert.False(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(".", version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("1.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(1U, version.Major);
+            Assert.Equal(0U, version.Minor);
+            Assert.Equal(0U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.True(version.HasMajor);
+            Assert.False(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(String.Empty, version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("2.1.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(2U, version.Major);
+            Assert.Equal(1U, version.Minor);
+            Assert.Equal(0U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(String.Empty, version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("3.2.1.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(3U, version.Major);
+            Assert.Equal(2U, version.Minor);
+            Assert.Equal(1U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(String.Empty, version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("4.3.2.1.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(4U, version.Major);
+            Assert.Equal(3U, version.Minor);
+            Assert.Equal(2U, version.Patch);
+            Assert.Equal(1U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.True(version.HasMajor);
+            Assert.True(version.HasMinor);
+            Assert.True(version.HasPatch);
+            Assert.True(version.HasRevision);
+            Assert.Equal(String.Empty, version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("5-.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(5U, version.Major);
+            Assert.Equal(0U, version.Minor);
+            Assert.Equal(0U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Null(version.Labels);
+            Assert.True(version.HasMajor);
+            Assert.False(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(".", version.Metadata);
+            Assert.True(version.Invalid);
+            version = WixVersion.Parse("6-a.");
+            Assert.Null(version.Prefix);
+            Assert.Equal(6U, version.Major);
+            Assert.Equal(0U, version.Minor);
+            Assert.Equal(0U, version.Patch);
+            Assert.Equal(0U, version.Revision);
+            Assert.Equal(new[] { "a" }, version.Labels.Select(l => l.Label).ToArray());
+            Assert.Equal(new uint?[] { null }, version.Labels.Select(l => l.Numeric).ToArray());
+            Assert.True(version.HasMajor);
+            Assert.False(version.HasMinor);
+            Assert.False(version.HasPatch);
+            Assert.False(version.HasRevision);
+            Assert.Equal(String.Empty, version.Metadata);
+            Assert.True(version.Invalid);
+        }
+        [Fact]
+        public void CanCompareVersions()
+        {
+            var version1 = WixVersion.Parse("1");
+            var version10 = WixVersion.Parse("1.0");
+            var version100 = WixVersion.Parse("1.0.0");
+            var version2 = WixVersion.Parse("2.0.0");
+            var version201 = WixVersion.Parse("2.0.1");
+            var version2a = WixVersion.Parse("2-a");
+            var version2b = WixVersion.Parse("2-b");
+            var versionInvalid3a = WixVersion.Parse("3.-a");
+            var versionInvalid3b = WixVersion.Parse("3.-b");
+            Assert.Equal(version1, version1);
+            Assert.Equal(version1, version10);
+            Assert.True(version1 == version10);
+            Assert.True(version1 == version100);
+            Assert.True(version1 <= version10);
+            Assert.True(version1 >= version10);
+            Assert.False(version1 != version10);
+            Assert.False(version1 < version10);
+            Assert.False(version1 < version100);
+            Assert.False(version1 > version10);
+            Assert.False(version1 > version100);
+            Assert.NotEqual(version1, version2);
+            Assert.True(version1 < version2);
+            Assert.False(version1 > version2);
+            Assert.True(version2 > version2a);
+            Assert.True(version2 != version2a);
+            Assert.False(version2 < version2a);
+            Assert.True(version2 < version201);
+            Assert.True(version2a < version2b);
+            Assert.False(version2a > version2b);
+            Assert.True(versionInvalid3a < versionInvalid3b);
+            Assert.True(version1 < versionInvalid3a);
+        }
+    }
+}