ersatztv/ErsatzTV.Core.Tests/Scheduling/FillerExpressionTests.cs

using ErsatzTV.Core.Domain;
using ErsatzTV.Core.Domain.Filler;
using ErsatzTV.Core.Scheduling;
using NUnit.Framework;
using Shouldly;

namespace ErsatzTV.Core.Tests.Scheduling;

[TestFixture]
public class FillerExpressionTests
{
    [Test]
    public void Two_Points_In_30_Minute_Content()
    {
        // 30 min content
        var playoutItem = new PlayoutItem { Start = DateTimeOffset.Now.UtcDateTime };
        playoutItem.Finish = playoutItem.Start + TimeSpan.FromMinutes(30);

        // chapters every 5 min
        var chapters = new List<MediaChapter>
        {
            new() { ChapterId = 1, StartTime = TimeSpan.Zero, EndTime = TimeSpan.FromMinutes(5) },
            new() { ChapterId = 2, StartTime = TimeSpan.FromMinutes(5), EndTime = TimeSpan.FromMinutes(10) },
            new() { ChapterId = 3, StartTime = TimeSpan.FromMinutes(10), EndTime = TimeSpan.FromMinutes(15) },
            new() { ChapterId = 4, StartTime = TimeSpan.FromMinutes(15), EndTime = TimeSpan.FromMinutes(20) },
            new() { ChapterId = 5, StartTime = TimeSpan.FromMinutes(20), EndTime = TimeSpan.FromMinutes(25) },
            new() { ChapterId = 6, StartTime = TimeSpan.FromMinutes(25), EndTime = TimeSpan.FromMinutes(30) }
        };

        // skip first 5 min of content, wait at least 5 min between points, only match up to 2 points
        var fillerPreset = new FillerPreset
        {
            FillerKind = FillerKind.MidRoll,
            Expression = "(point > 5 * 60) and (last_mid_filler > 5 * 60) and (matched_points < 2)"
        };

        List<MediaChapter> result = FillerExpression.FilterChapters(fillerPreset.Expression, chapters, playoutItem);

        result.Count.ShouldBe(3);
        result[0].EndTime.ShouldBe(TimeSpan.FromMinutes(10));
        result[1].EndTime.ShouldBe(TimeSpan.FromMinutes(20));
        result[2].EndTime.ShouldBe(TimeSpan.FromMinutes(30));
    }

    [Test]
    public void Two_Points_In_30_Minute_Content_Another_Expression()
    {
        // 30 min content
        var playoutItem = new PlayoutItem { Start = DateTimeOffset.Now.UtcDateTime };
        playoutItem.Finish = playoutItem.Start + TimeSpan.FromMinutes(30);

        // chapters every 5 min
        var chapters = new List<MediaChapter>
        {
            new() { ChapterId = 1, StartTime = TimeSpan.Zero, EndTime = TimeSpan.FromMinutes(5) },
            new() { ChapterId = 2, StartTime = TimeSpan.FromMinutes(5), EndTime = TimeSpan.FromMinutes(10) },
            new() { ChapterId = 3, StartTime = TimeSpan.FromMinutes(10), EndTime = TimeSpan.FromMinutes(15) },
            new() { ChapterId = 4, StartTime = TimeSpan.FromMinutes(15), EndTime = TimeSpan.FromMinutes(20) },
            new() { ChapterId = 5, StartTime = TimeSpan.FromMinutes(20), EndTime = TimeSpan.FromMinutes(25) },
            new() { ChapterId = 6, StartTime = TimeSpan.FromMinutes(25), EndTime = TimeSpan.FromMinutes(30) }
        };

        // skip first 5 min of content, wait at least 5 min between points, only match up to 2 points
        var fillerPreset = new FillerPreset
        {
            FillerKind = FillerKind.MidRoll,
            Expression =
                "(total_progress >= 0.2 and matched_points = 0) or (total_progress >= 0.6 and matched_points = 1)"
        };

        List<MediaChapter> result = FillerExpression.FilterChapters(fillerPreset.Expression, chapters, playoutItem);

        result.Count.ShouldBe(3);
        result[0].EndTime.ShouldBe(TimeSpan.FromMinutes(10));
        result[1].EndTime.ShouldBe(TimeSpan.FromMinutes(20));
        result[2].EndTime.ShouldBe(TimeSpan.FromMinutes(30));
    }
}