// Copyright Dirk Lemstra https://github.com/dlemstra/Magick.NET.
// Licensed under the Apache License, Version 2.0.

using ImageMagick;
using Xunit;

namespace Magick.NET.Tests;

public partial class MagickImageTests
{
    [Collection(nameof(RunTestsSeparately))]
    public class TheAddNoiseMethod
    {
        [Fact]
        public void ShouldCreateDifferentImagesEachRun()
        {
            using var imageA = new MagickImage(MagickColors.Black, 10, 10);
            using var imageB = new MagickImage(MagickColors.Black, 10, 10);
            imageA.AddNoise(NoiseType.Random);
            imageB.AddNoise(NoiseType.Random);

            Assert.NotEqual(0.0, imageA.Compare(imageB, ErrorMetric.RootMeanSquared));
        }

        [Fact]
        public void ShouldUseTheRandomSeed()
        {
            MagickNET.SetRandomSeed(1337);

            using var first = new MagickImage(Files.Builtin.Logo);
            first.AddNoise(NoiseType.Laplacian);

            ColorAssert.NotEqual(MagickColors.White, first, 46, 62);

            using var second = new MagickImage(Files.Builtin.Logo);
            second.AddNoise(NoiseType.Laplacian, 2.0);

            ColorAssert.NotEqual(MagickColors.White, first, 46, 62);
            Assert.False(first.Equals(second));

            MagickNET.ResetRandomSeed();
        }
    }
}
