using Xunit;
using ZB.MOM.WW.OtOpcUa.Core.Abstractions;        // HistoryAggregateType
using ZB.MOM.WW.HistorianGateway.Contracts.Grpc;  // RetrievalMode
using ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway.Mapping;

namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway.Tests.Mapping;

public sealed class AggregateModeMapperTests
{
    [Theory]
    [InlineData(HistoryAggregateType.Average, RetrievalMode.TimeWeightedAverage)]
    [InlineData(HistoryAggregateType.Minimum, RetrievalMode.MinimumWithTime)]
    [InlineData(HistoryAggregateType.Maximum, RetrievalMode.MaximumWithTime)]
    [InlineData(HistoryAggregateType.Total,   RetrievalMode.Integral)]
    [InlineData(HistoryAggregateType.Count,   RetrievalMode.Counter)]
    public void Maps_each_aggregate(HistoryAggregateType a, RetrievalMode expected)
        => Assert.Equal(expected, AggregateModeMapper.ToRetrievalMode(a));

    [Fact] // matrix guard: a new HistoryAggregateType member must fail here
    public void Every_aggregate_member_is_mapped()
    {
        foreach (var a in Enum.GetValues<HistoryAggregateType>())
            _ = AggregateModeMapper.ToRetrievalMode(a); // must not throw for any defined member
    }
}