// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
using System;
using System.Diagnostics;
 
namespace Microsoft.CodeAnalysis
{
    // To enable this for a process, add the following to the app.config for the project:
    //
    // <configuration>
    //  <system.diagnostics>
    //    <trace>
    //      <listeners>
    //        <remove name="Default" />
    //        <add name="ThrowingTraceListener" type="Microsoft.CodeAnalysis.ThrowingTraceListener, Roslyn.Test.Utilities" />
    //      </listeners>
    //    </trace>
    //  </system.diagnostics>
    //</configuration>
    public sealed class ThrowingTraceListener : TraceListener
    {
        public override void Fail(string? message, string? detailMessage)
        {
            throw new InvalidOperationException(
                (string.IsNullOrEmpty(message) ? "Assertion failed" : message) +
                (string.IsNullOrEmpty(detailMessage) ? "" : Environment.NewLine + detailMessage));
        }
 
        public override void Write(object? o)
        {
        }
 
        public override void Write(object? o, string? category)
        {
        }
 
        public override void Write(string? message)
        {
        }
 
        public override void Write(string? message, string? category)
        {
        }
 
        public override void WriteLine(object? o)
        {
        }
 
        public override void WriteLine(object? o, string? category)
        {
        }
 
        public override void WriteLine(string? message)
        {
        }
 
        public override void WriteLine(string? message, string? category)
        {
        }
    }
}