// Copyright (c) .NET Foundation and contributors. All rights reserved.
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System;
using System.Collections.Generic;
using System.IO;
using Microsoft.Build.Construction;
using Microsoft.DotNet.Tools.Test.Utilities;
using Xunit;
using FluentAssertions;

namespace Microsoft.DotNet.Help.Tests
{
    public class GivenThatIWantToShowHelpForDotnetCommand : TestBase
    {
        private const string HelpText =
@"Usage: dotnet [host-options] [command] [arguments] [common-options]

Arguments:
  [command]             The command to execute
  [arguments]           Arguments to pass to the command
  [host-options]        Options specific to dotnet (host)
  [common-options]      Options common to all commands

Common options:
  -v|--verbose          Enable verbose output
  -h|--help             Show help

Host options (passed before the command):
  -d|--diagnostic       Enable diagnostics output
  --version             Display .NET CLI Version Number
  --info                Display .NET CLI Info

Commands:
  new           Initialize a basic .NET project
  restore       Restore dependencies specified in the .NET project
  build         Builds a .NET project
  publish       Publishes a .NET project for deployment (including the runtime)
  run           Compiles and immediately executes a .NET project
  test          Runs unit tests using the test runner specified in the project
  pack          Creates a NuGet package
  migrate       Migrates a project.json based project to a msbuild based project

Project modification commands:
  add           Add items to the project
  remove        Remove items from the project
  list          List items in the project

Advanced Commands:
  nuget         Provides additional NuGet commands
  msbuild       msbuilds a project and all of its dependencies
  vstest        Runs tests from the specified files";

        [Theory]
        [InlineData("--help")]
        [InlineData("-h")]
        public void WhenHelpOptionIsPassedToDotnetItPrintsUsage(string helpArg)
        {
            var cmd = new DotnetCommand()
                .ExecuteWithCapturedOutput($"{helpArg}");
            cmd.Should().Pass().And.HaveStdOutContaining(HelpText);
        }
    }
}