ScadaBridge/tests/ZB.MOM.WW.ScadaBridge.SiteEventLogging.Tests/SiteEventLogOptionsValidatorTests.cs

using Microsoft.Extensions.Options;

namespace ZB.MOM.WW.ScadaBridge.SiteEventLogging.Tests;

/// <summary>
/// <see cref="SiteEventLogOptions"/> retention/purge values drive the daily purge
/// PeriodicTimer (zero/negative trips its constructor) and the paging bounds gate
/// query result sizes. These tests assert the
/// <see cref="SiteEventLogOptionsValidator"/> rejects a bad
/// <c>ScadaBridge:SiteEventLog</c> section with a clear, key-naming message.
/// </summary>
public class SiteEventLogOptionsValidatorTests
{
    private static ValidateOptionsResult Validate(SiteEventLogOptions options) =>
        new SiteEventLogOptionsValidator().Validate(Options.DefaultName, options);

    [Fact]
    public void DefaultOptions_AreValid()
    {
        var result = Validate(new SiteEventLogOptions());
        Assert.True(result.Succeeded, result.FailureMessage);
    }

    [Fact]
    public void ZeroRetentionDays_IsRejected()
    {
        var result = Validate(new SiteEventLogOptions { RetentionDays = 0 });

        Assert.True(result.Failed);
        Assert.Contains("RetentionDays", result.FailureMessage);
    }

    [Fact]
    public void ZeroPurgeInterval_IsRejected()
    {
        var result = Validate(new SiteEventLogOptions { PurgeInterval = TimeSpan.Zero });

        Assert.True(result.Failed);
        Assert.Contains("PurgeInterval", result.FailureMessage);
    }

    [Fact]
    public void MaxQueryPageSize_BelowQueryPageSize_IsRejected()
    {
        var result = Validate(new SiteEventLogOptions { QueryPageSize = 500, MaxQueryPageSize = 100 });

        Assert.True(result.Failed);
        Assert.Contains("MaxQueryPageSize", result.FailureMessage);
    }
}