bitwarden-server/test/Core.Test/Services/AppleIapServiceTests.cs

using System;
using System.Linq;
using System.Threading.Tasks;
using Bit.Core.Services;
using Bit.Test.Common.AutoFixture;
using Bit.Test.Common.AutoFixture.Attributes;
using Microsoft.Extensions.Logging;
using NSubstitute;
using NSubstitute.Core;
using Xunit;

namespace Bit.Core.Test.Services
{
    [SutProviderCustomize]
    public class AppleIapServiceTests
    {
        [Theory, BitAutoData]
        public async Task GetReceiptStatusAsync_MoreThanFourAttempts_Throws(SutProvider<AppleIapService> sutProvider)
        {
            var result = await sutProvider.Sut.GetReceiptStatusAsync("test", false, 5, null);
            Assert.Null(result);

            var errorLog = sutProvider.GetDependency<ILogger<AppleIapService>>()
                .ReceivedCalls()
                .SingleOrDefault(LogOneWarning);

            Assert.True(errorLog != null, "Must contain one error log of warning level containing 'null'");

            static bool LogOneWarning(ICall call)
            {
                if (call.GetMethodInfo().Name != "Log")
                {
                    return false;
                }

                var args = call.GetArguments();
                var logLevel = (LogLevel)args[0];
                var exception = (Exception)args[3];

                return logLevel == LogLevel.Warning && exception.Message.Contains("null");
            }
        }
    }
}