using System;
using ZB.MOM.WW.MxGateway.Worker.MxAccess;

namespace ZB.MOM.WW.MxGateway.Worker.Tests.MxAccess;

/// <summary>
///     Unit tests for <see cref="SyntheticAlarmGuid"/>: the subtag-fallback
///     path derives a deterministic GUID from the alarm reference, so identical
///     references must collide and distinct references must not.
/// </summary>
public sealed class SyntheticAlarmGuidTests
{
    /// <summary>Verifies the same reference yields the same GUID.</summary>
    [Fact]
    public void SameReference_SameGuid() =>
        Assert.Equal(SyntheticAlarmGuid.ForReference("A.B.C"), SyntheticAlarmGuid.ForReference("A.B.C"));

    /// <summary>Verifies distinct references yield distinct GUIDs.</summary>
    [Fact]
    public void DifferentReference_DifferentGuid() =>
        Assert.NotEqual(SyntheticAlarmGuid.ForReference("A.B.C"), SyntheticAlarmGuid.ForReference("A.B.D"));

    /// <summary>Verifies a reference produces a non-empty GUID.</summary>
    [Fact]
    public void Reference_ProducesNonEmptyGuid() =>
        Assert.NotEqual(Guid.Empty, SyntheticAlarmGuid.ForReference("A.B.C"));
}