using System.Reflection;

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

public class ManagementPagingBoundaryTests
{
    /// <summary>Verifies that a positive take is capped, while an omitted or non-positive take preserves unlimited paging.</summary>
    /// <param name="take">The requested page size, or null when omitted.</param>
    /// <param name="expected">The number of rows expected back.</param>
    [Theory]
    [InlineData(null, 1100)]
    [InlineData(-1, 1100)]
    [InlineData(0, 1100)]
    [InlineData(1, 1)]
    [InlineData(1000, 1000)]
    [InlineData(1001, 1000)]
    [InlineData(int.MaxValue, 1000)]
    public void PositiveTakeIsCapped_OmittedOrNonpositiveTakePreservesUnlimited(int? take, int expected)
    {
        var page = typeof(ManagementActor).GetMethod("Page", BindingFlags.Static | BindingFlags.NonPublic)!.MakeGenericMethod(typeof(int));
        var rows = (List<int>)page.Invoke(null, [Enumerable.Range(0, 1100), -1, take])!;
        Assert.Equal(expected, rows.Count);
        Assert.Equal(0, rows[0]);
    }
}