Make a messagepack deserialize test (#10163)

This adds a test case that verifies deserializing a test file rather
than going through the serialize/deserialize loop. Instructions are
added for if the test fails.

src/Razor/test/Microsoft.AspNetCore.Razor.ProjectEngineHost.Test/Serialization/SerializerValidationTest.cs

@@ -128,6 +128,35 @@ public void VerifyJson_TagHelpers(string resourceName, string? folderName = null
         Assert.Equal<TagHelperDescriptor>(originalTagHelpers, actualTagHelpers);
     }
 
+
+    /// <summary>
+    /// Verifies that a previous generated file is able to be serialized. If this
+    /// fails make sure to do ONE of the following:
+    ///
+    /// 1. Update the deserializer to be lenient on the previous version
+    /// 2. Bump the Microsoft.AspNetCore.Razor.Serialization.MessagePack.SerializationFormat.Version
+    ///     a. Generate a new file to replace project.razor.bin with the new format. As of writing this was made from the base blazorserver template
+    ///     b. This will require a dual insertion with Roslyn do use the correct version number
+    /// </summary>
+    [Theory]
+    [InlineData("project.razor.bin")]
+    public void VerifyMessagePack_DeserializeMessagepack(string resourceName)
+    {
+        // Arrange
+        var resourceBytes = RazorTestResources.GetResourceBytes(resourceName, "Benchmarking");
+        var options = MessagePackSerializerOptions.Standard
+            .WithResolver(CompositeResolver.Create(
+                RazorProjectInfoResolver.Instance,
+                StandardResolver.Instance));
+
+        // Act
+        var actualProjectInfo = MessagePackConvert.Deserialize<RazorProjectInfo>(resourceBytes, options);
+
+        // Assert
+        Assert.NotNull(actualProjectInfo);
+        Assert.NotNull(actualProjectInfo.DisplayName);
+    }
+
     private static RazorProjectInfo DeserializeProjectInfoFromJsonBytes(byte[] resourceBytes)
     {
         using var stream = new MemoryStream(resourceBytes);

src/Razor/test/Microsoft.AspNetCore.Razor.Test.Common.Tooling/Microsoft.AspNetCore.Razor.Test.Common.Tooling.csproj

@@ -21,6 +21,7 @@
   </ItemGroup>
 
   <ItemGroup>
+    <EmbeddedResource Include="..\..\benchmarks\Microsoft.AspNetCore.Razor.Microbenchmarks\Resources\project.razor.bin" Link="Resources\Benchmarking\project.razor.bin" />
     <EmbeddedResource Include="..\..\benchmarks\Microsoft.AspNetCore.Razor.Microbenchmarks\Resources\project.razor.json" Link="Resources\Benchmarking\project.razor.json" />
     <EmbeddedResource Include="..\..\benchmarks\Microsoft.AspNetCore.Razor.Microbenchmarks\Resources\taghelpers.json" Link="Resources\Benchmarking\taghelpers.json" />
     <EmbeddedResource Include="..\..\benchmarks\Microsoft.AspNetCore.Razor.Microbenchmarks\Resources\Telerik\Kendo.Mvc.Examples.project.razor.json" Link="Resources\Benchmarking\Kendo.Mvc.Examples.project.razor.json" />