// Copyright (c) Toni Solarin-Sodara
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System.IO;
using System.Threading.Tasks;
using Coverlet.Core.Samples.Tests;
using Xunit;

namespace Coverlet.Core.Tests
{
    public partial class CoverageTests
    {
        [Fact]
        public void AsyncIterator()
        {
            string path = Path.GetTempFileName();
            try
            {
                FunctionExecutor.Run(async (string[] pathSerialize) =>
                {
                    CoveragePrepareResult coveragePrepareResult = await TestInstrumentationHelper.Run<AsyncIterator>(instance =>
                    {
                        int res = ((Task<int>)instance.Issue1104_Repro()).GetAwaiter().GetResult();

                        return Task.CompletedTask;
                    }, persistPrepareResultToFile: pathSerialize[0]);
                    return 0;
                }, new string[] { path });

                TestInstrumentationHelper.GetCoverageResult(path)
                .Document("Instrumentation.AsyncIterator.cs")
                .AssertLinesCovered(BuildConfiguration.Debug,
                                    // Issue1104_Repro()
                                    (14, 1), (15, 1), (17, 203), (18, 100), (19, 100), (20, 100), (22, 1), (23, 1),
                                    // CreateSequenceAsync()
                                    (26, 1), (27, 202), (28, 100), (29, 100), (30, 100), (31, 100), (32, 1)
                                    )
                .AssertBranchesCovered(BuildConfiguration.Debug,
                                       // Issue1104_Repro(),
                                       (17, 0, 1), (17, 1, 100),
                                       // CreateSequenceAsync()
                                       (27, 0, 1), (27, 1, 100)
                                       )
                .ExpectedTotalNumberOfBranches(BuildConfiguration.Debug, 2);
            }
            finally
            {
                File.Delete(path);
            }
        }
    }
}