public void Compare_PackageWithRefAssetsThatTheNuspecDoesNotHave_ShouldHaveOneMissingItem()
        {
            //Arrange
            var references = new Dictionary <string, IEnumerable <string> >
            {
                { "net462", new List <string>()
                  {
                      "MyLib.dll"
                  } }
            };
            var files = new string[]
            {
                "ref/net462/MyLib.dll",
                "ref/net462/MyHelpers.dll"
            };

            //Act
            var rule = new ReferencesInNuspecMatchRefAssetsRule();
            var missingReferences = rule.Compare(references, files);

            //Assert
            Assert.Equal(missingReferences.Count(), 1);
            var singleIssue = missingReferences.Single(t => t.Tfm.Equals("net462") && t.MissingItems.Contains("MyHelpers.dll"));
        }