Simple.Testing Doc Generator Pretty Print Enumerables

Program.cs

	class Program
	{
		static void Main(string[] args)
		{
			SimpleRunner.RunAllInAssembly(typeof(Program).Assembly).ForEach(PrintSpec);
		}
		private static string NicePrint(object target)
		{
			if (target == null)
			{
				return "???";
			}

			var s = target as string;
			if (s != null)
			{
				return s;
			}

			if (target is IEnumerable)
			{
				return (target as IEnumerable)
					.OfType<object>()
					.Aggregate(new StringBuilder(),
							   (builder, x) => builder.AppendLine(x.ToString()),
							   builder => builder.ToString());
			}

			return target.ToString();
		}

		private static void PrintSpec(RunResult result)
		{
			var passed = result.Passed ? "Passed" : "Failed";
			Console.WriteLine(result.Name.Replace('_', ' ') + " - " + passed);
			var on = result.GetOnResult();
			if (on != null)
			{
				Console.WriteLine();
				Console.WriteLine("On:");
				Console.WriteLine(NicePrint(on));
				Console.WriteLine();
			}
			if (result.Result != null)
			{
				Console.WriteLine();
				Console.WriteLine("Results with:");
				if (result.Result is Exception)
					Console.WriteLine(result.Result.GetType() + "\n" + ((Exception)result.Result).Message);
				else
					Console.WriteLine(NicePrint(result.Result));
				Console.WriteLine();
			}

			Console.WriteLine("Expectations:");
			foreach (var expecation in result.Expectations)
			{
				if (expecation.Passed)
					Console.WriteLine("\t" + expecation.Text + " " + (expecation.Passed ? "Passed" : "Failed"));
				else
					Console.WriteLine(expecation.Exception.Message);
			}
			if (result.Thrown != null)
			{
				Console.WriteLine("Specification failed: " + result.Message);
				Console.WriteLine();
				Console.WriteLine(result.Thrown);
			}
			Console.WriteLine(new string('-', 80));
			Console.WriteLine();
		}
	}