Joseph Doherty
76 lines
3.6 KiB
C#
76 lines
3.6 KiB
C#
using Google.Protobuf.WellKnownTypes;
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using Microsoft.Extensions.Logging.Abstractions;
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using Xunit;
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using ZB.MOM.WW.HistorianGateway.Contracts.Grpc;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.Gateway.Tests;
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public sealed class GatewayHistorianDataSourceTests
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{
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[Fact]
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public async Task ReadRaw_maps_samples_and_passes_args()
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{
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var fake = new FakeHistorianGatewayClient
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{
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RawSamples = new[]
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{
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new HistorianSample { Tag = "T", NumericValue = 1.0, OpcQuality = 192, Timestamp = Ts(2026, 1, 1, 0, 0, 0) },
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new HistorianSample { Tag = "T", NumericValue = 2.0, OpcQuality = 0, Timestamp = Ts(2026, 1, 1, 0, 0, 1) },
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},
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};
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var ds = new GatewayHistorianDataSource(fake, NullLogger<GatewayHistorianDataSource>.Instance);
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var r = await ds.ReadRawAsync("T", DateTime.UtcNow.AddMinutes(-5), DateTime.UtcNow, 100, TestContext.Current.CancellationToken);
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Assert.Equal(2, r.Samples.Count);
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Assert.Equal(0x80000000u, r.Samples[1].StatusCode); // Bad from quality 0
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Assert.Equal("T", fake.LastReadRawTag);
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Assert.Equal(100, fake.LastReadRawMaxValues);
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}
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[Fact]
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public async Task ReadProcessed_uses_aggregate_mode_mapping()
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{
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var fake = new FakeHistorianGatewayClient();
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var ds = new GatewayHistorianDataSource(fake, NullLogger<GatewayHistorianDataSource>.Instance);
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await ds.ReadProcessedAsync("T", default, default, TimeSpan.FromSeconds(60), HistoryAggregateType.Minimum, TestContext.Current.CancellationToken);
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Assert.Equal(RetrievalMode.MinimumWithTime, fake.LastAggregateMode);
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Assert.Equal(TimeSpan.FromSeconds(60), fake.LastAggregateInterval);
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}
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[Fact]
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public async Task ReadAtTime_aligns_one_snapshot_per_timestamp_with_gaps_Bad()
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{
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var fake = new FakeHistorianGatewayClient();
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var t0 = new DateTime(2026, 1, 1, 0, 0, 0, DateTimeKind.Utc);
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var t1 = t0.AddSeconds(1);
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fake.AtTimeSamples = new[] { new HistorianSample { NumericValue = 5.0, OpcQuality = 192, Timestamp = Timestamp.FromDateTime(t0) } };
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var ds = new GatewayHistorianDataSource(fake, NullLogger<GatewayHistorianDataSource>.Instance);
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var r = await ds.ReadAtTimeAsync("T", new[] { t0, t1 }, TestContext.Current.CancellationToken);
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Assert.Equal(2, r.Samples.Count); // exactly one per requested ts, in order
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Assert.Equal(5.0, r.Samples[0].Value);
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Assert.Equal(0x80000000u, r.Samples[1].StatusCode); // gap → Bad at requested ts
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}
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[Fact]
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public async Task Empty_window_is_not_a_fault()
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{
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var fake = new FakeHistorianGatewayClient { RawSamples = Array.Empty<HistorianSample>() };
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var ds = new GatewayHistorianDataSource(fake, NullLogger<GatewayHistorianDataSource>.Instance);
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var r = await ds.ReadRawAsync("T", default, default, 10, TestContext.Current.CancellationToken);
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Assert.Empty(r.Samples); // GoodNoData-empty, no throw
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}
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[Fact]
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public async Task Disposing_data_source_disposes_client()
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{
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var fake = new FakeHistorianGatewayClient();
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var ds = new GatewayHistorianDataSource(fake, NullLogger<GatewayHistorianDataSource>.Instance);
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await ds.DisposeAsync();
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Assert.Equal(1, fake.DisposeCallCount);
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}
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// Ts(...) builds a Google.Protobuf.WellKnownTypes.Timestamp from UTC parts.
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private static Timestamp Ts(int y, int mo, int d, int h, int mi, int s)
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=> Timestamp.FromDateTime(new DateTime(y, mo, d, h, mi, s, DateTimeKind.Utc));
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}
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