ensure new range matches

Author: brettfo

nuget/helpers/lib/NuGetUpdater/NuGetUpdater.Core.Test/Update/FileWriters/XmlFileWriterTests_CreateUpdatedVersionRangeTests.cs

@@ -27,6 +27,9 @@ public void CreateUpdatedVersionRange(string existingRangeString, string existin
         var existingRange = VersionRange.Parse(existingRangeString);
         var existingVersion = NuGetVersion.Parse(existingVersionString);
         var newVersion = NuGetVersion.Parse(newVersionString);
+        var newRange = VersionRange.Parse(expectedNewRangeString);
+
+        Assert.True(newRange.Satisfies(newVersion));
 
         var actualNewRangeString = XmlFileWriter.CreateUpdatedVersionRangeString(existingRange, existingVersion, newVersion);