Improve comparison

Author: javiercn

test/Microsoft.NET.Sdk.Razor.Tests/StaticWebAssetsBaselineComparer.cs

@@ -350,7 +350,11 @@ static void ThrowEndpointCountMismatchError(string group, StaticWebAssetEndpoint
 
             var differences = new List<string>
             {
-                $"Expected group '{group}' to have '{expectedEndpoints.Length}' endpoints but found '{manifestEndpoints.Length}'."
+                $"Expected group '{group}' to have '{expectedEndpoints.Length}' endpoints but found '{manifestEndpoints.Length}'.",
+                "Expected Endpoints:",
+                string.Join($"{Environment.NewLine}\t", expectedEndpoints.Select(a => $"{a.Route} - {a.AssetFile}")),
+                "Actual Endpoints:",
+                string.Join($"{Environment.NewLine}\t", manifestEndpoints.Select(a => $"{a.Route} - {a.AssetFile}"))
             };
 
             if (missingEndpoints.Any())