Use json source generator

Bootstrap/Program.cs

@@ -1,6 +1,8 @@
 using System.CommandLine;
 using System.Text.Json;
+using System.Text.Json.Serialization.Metadata;
 using Microsoft.Build.Locator;
+using TestMyCode.CSharp.Bootstrap;
 using TestMyCode.CSharp.Core.Compiler;
 using TestMyCode.CSharp.Core.Data;
 using TestMyCode.CSharp.Core.Test;
@@ -84,7 +86,7 @@ static async Task<int> CommandHandler(bool generatePointsFile, bool runTests, Di
 	{
 		FileInfo resultsFile = outputFile ?? new FileInfo(Path.Combine(projectDir.FullName, ".tmc_available_points.json"));
 
-		await WriteToFile(resultsFile, projectData.Points);
+		await WriteToFile(resultsFile, projectData.Points, RunnerJsonContext.Default.IReadOnlyDictionaryStringHashSetString);
 	}
 
 	if (runTests)
@@ -94,10 +96,10 @@ static async Task<int> CommandHandler(bool generatePointsFile, bool runTests, Di
 
 		FileInfo resultsFile = outputFile ?? new FileInfo(Path.Combine(projectDir.FullName, ".tmc_test_results.json"));
 
-		await WriteToFile(resultsFile, testRunner.TestResults);
+		await WriteToFile(resultsFile, testRunner.TestResults, RunnerJsonContext.Default.IReadOnlyListMethodTestResult);
 	}
 
-	static async Task WriteToFile<T>(FileInfo resultsFile, T data)
+	static async Task WriteToFile<T>(FileInfo resultsFile, T data, JsonTypeInfo<T> jsonTypeInfo)
 	{
 		if (resultsFile.Exists)
 		{
@@ -106,10 +108,7 @@ static async Task WriteToFile<T>(FileInfo resultsFile, T data)
 
 		await using FileStream stream = resultsFile.Open(FileMode.OpenOrCreate, FileAccess.Write);
 
-		await JsonSerializer.SerializeAsync(stream, data, options: new JsonSerializerOptions
-		{
-			WriteIndented = true
-		});
+		await JsonSerializer.SerializeAsync(stream, data, jsonTypeInfo);
 	}
 
 	return 0;

Bootstrap/RunnerJsonContext.cs

@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+using TestMyCode.CSharp.Core.Test;
+
+namespace TestMyCode.CSharp.Bootstrap;
+
+[JsonSourceGenerationOptions(WriteIndented = true)]
+[JsonSerializable(typeof(IReadOnlyDictionary<string, HashSet<string>>))]
+[JsonSerializable(typeof(IReadOnlyList<MethodTestResult>))]
+internal sealed partial class RunnerJsonContext : JsonSerializerContext
+{
+}