Joseph Doherty
56 lines
2.4 KiB
C#
56 lines
2.4 KiB
C#
using Shouldly;
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using Xunit;
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using ZB.MOM.WW.OtOpcUa.Core.Abstractions;
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using ZB.MOM.WW.OtOpcUa.Core.AlarmHistorian;
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namespace ZB.MOM.WW.OtOpcUa.Driver.Historian.SqlServer.Tests;
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public sealed class AlarmEventIdTests
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{
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private static readonly DateTime T = new(2026, 10, 9, 1, 2, 3, DateTimeKind.Utc);
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private static AlarmHistorianEvent Ev(string path = "P", string id = "A", string kind = "Activated", string user = "u",
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string? comment = "c", string msg = "m", DateTime? t = null) =>
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new(id, path, "n", "LimitAlarm", AlarmSeverity.High, kind, msg, user, comment, t ?? T);
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[Fact]
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public void Id_is_stable_lowercase_hex_sha256()
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{
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var a = SqlServerAlarmHistorianWriter.ComputeEventId(Ev());
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a.ShouldBe(SqlServerAlarmHistorianWriter.ComputeEventId(Ev()));
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a.Length.ShouldBe(64);
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a.ShouldBe(a.ToLowerInvariant());
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}
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[Fact]
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public void Field_boundaries_are_unambiguous()
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{
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// The delimiter-based scheme collided on these; length prefixes must not.
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SqlServerAlarmHistorianWriter.ComputeEventId(Ev(path: "a|b", id: "c"))
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.ShouldNotBe(SqlServerAlarmHistorianWriter.ComputeEventId(Ev(path: "a", id: "b|c")));
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SqlServerAlarmHistorianWriter.ComputeEventId(Ev(path: "ab", id: "c"))
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.ShouldNotBe(SqlServerAlarmHistorianWriter.ComputeEventId(Ev(path: "a", id: "bc")));
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}
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[Fact]
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public void Null_and_empty_differ_and_every_field_participates()
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{
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var basis = SqlServerAlarmHistorianWriter.ComputeEventId(Ev());
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SqlServerAlarmHistorianWriter.ComputeEventId(Ev(comment: null)).ShouldNotBe(SqlServerAlarmHistorianWriter.ComputeEventId(Ev(comment: "")));
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foreach (var other in new[]
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{
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Ev(path: "Q"), Ev(id: "B"), Ev(kind: "Cleared"), Ev(user: "v"), Ev(comment: "d"), Ev(msg: "x"),
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Ev(t: T.AddTicks(1)),
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})
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SqlServerAlarmHistorianWriter.ComputeEventId(other).ShouldNotBe(basis);
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}
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[Theory]
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[InlineData(typeof(InvalidOperationException))]
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[InlineData(typeof(ArgumentException))]
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[InlineData(typeof(FormatException))]
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public void Non_SQL_exceptions_retry_rather_than_dead_letter(Type type) =>
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SqlServerAlarmHistorianWriter.Classify((Exception)Activator.CreateInstance(type)!)
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.ShouldBe(HistorianWriteOutcome.RetryPlease);
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}
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