Make test failures show the exact difference on SDK generated code

Author: jnm2

tools/ExampleTester.Tests/FastCsprojCompilationParserTests.cs

@@ -45,11 +45,16 @@ private static void CompareMSBuildWorkspaceCompilation(string csprojContents, Cs
                 Path.GetFileName(tree.FilePath).EndsWith(ending, StringComparison.OrdinalIgnoreCase)))
             .ToImmutableArray();
 
+        // Assert that the generated files have the same names in the same order
         result.GeneratedSources.SequenceEqual(sanitizedSyntaxTrees, (a, b) =>
-            Path.GetFileName(a.FilePath).Equals(Path.GetFileName(b.FilePath), StringComparison.OrdinalIgnoreCase)
-            && a.Options.Equals(b.Options)
-            && a.GetText().ToString() == b.GetText().ToString())
-            .ShouldBeTrue();
+            Path.GetFileName(a.FilePath).Equals(Path.GetFileName(b.FilePath), StringComparison.OrdinalIgnoreCase));
+
+        // Assert that the files have the same parse options and contents
+        foreach (var (fastGenerated, msbuildGenerated) in result.GeneratedSources.Zip(sanitizedSyntaxTrees))
+        {
+            fastGenerated.Options.ShouldBe(msbuildGenerated.Options);
+            fastGenerated.GetText().ToString().ShouldBe(msbuildGenerated.GetText().ToString());
+        }
     }
 
     private static Compilation GetMSBuildWorkspaceCompilation(string csprojContents)
@@ -216,7 +221,7 @@ public static void ParsesImplicitUsings([Values("true", "enable", "false", "disa
                 global using System.Net.Http;
                 global using System.Threading;
                 global using System.Threading.Tasks;
-                
+
                 """);
         }
         else