using ZB.MOM.WW.ScadaBridge.AuditLog.Central;

namespace ZB.MOM.WW.ScadaBridge.AuditLog.Tests.Central;

/// <summary>
/// Eager startup validation for <see cref="AuditLogPartitionMaintenanceOptions"/>
/// (arch-review 08 round 2 NF4). A zero tick interval spins the maintenance
/// hosted service; a zero look-ahead leaves the partition function without a
/// future monthly boundary, risking inserts into the unbounded tail partition.
/// </summary>
public class AuditLogPartitionMaintenanceOptionsValidatorTests
{
    /// <summary>Verifies that the default options pass validation.</summary>
    [Fact]
    public void DefaultOptions_AreValid()
    {
        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
        Assert.True(validator.Validate(null, new AuditLogPartitionMaintenanceOptions()).Succeeded);
    }

    /// <summary>Verifies that a zero interval fails validation and names the interval property.</summary>
    [Fact]
    public void ZeroIntervalSeconds_Fails()
    {
        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
        var result = validator.Validate(null,
            new AuditLogPartitionMaintenanceOptions { IntervalSeconds = 0 });
        Assert.False(result.Succeeded);
        Assert.Contains(result.Failures!,
            f => f.Contains(nameof(AuditLogPartitionMaintenanceOptions.IntervalSeconds), StringComparison.Ordinal));
    }

    /// <summary>Verifies that a zero look-ahead fails validation and names the look-ahead property.</summary>
    [Fact]
    public void ZeroLookaheadMonths_Fails()
    {
        var validator = new AuditLogPartitionMaintenanceOptionsValidator();
        var result = validator.Validate(null,
            new AuditLogPartitionMaintenanceOptions { LookaheadMonths = 0 });
        Assert.False(result.Succeeded);
        Assert.Contains(result.Failures!,
            f => f.Contains(nameof(AuditLogPartitionMaintenanceOptions.LookaheadMonths), StringComparison.Ordinal));
    }
}