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

using ImageMagick;
using Xunit;

#if Q8
using QuantumType = System.Byte;
#elif Q16
using QuantumType = System.UInt16;
#elif Q16HDRI
using QuantumType = System.Single;
#else
#error Not implemented!
#endif

namespace Magick.NET.Tests
{
    public partial class ColorRGBTests
    {
        public class TheFuzzyEqualsMethod
        {
            [Fact]
            public void ShouldReturnFalseWhenOtherIsNull()
            {
                var color = new ColorRGB(Quantum.Max, Quantum.Max, Quantum.Max);

                Assert.False(color.FuzzyEquals(null, (Percentage)0));
            }

            [Fact]
            public void ShouldReturnTrueWhenOtherIsSame()
            {
                var color = new ColorRGB(Quantum.Max, Quantum.Max, Quantum.Max);

                Assert.True(color.FuzzyEquals(color, (Percentage)0));
            }

            [Fact]
            public void ShouldReturnTrueWhenOtherIsEqual()
            {
                var first = new ColorRGB(Quantum.Max, Quantum.Max, Quantum.Max);
                ColorRGB second = new MagickColor(Quantum.Max, Quantum.Max, Quantum.Max);

                Assert.True(first.FuzzyEquals(second, (Percentage)0));
            }

            [Fact]
            public void ShouldUseThePercentage()
            {
                var first = new ColorRGB(Quantum.Max, Quantum.Max, Quantum.Max);
                var second = new ColorRGB(Quantum.Max, (QuantumType)(Quantum.Max / 2.0), Quantum.Max);

                Assert.False(first.FuzzyEquals(second, (Percentage)0));
                Assert.False(first.FuzzyEquals(second, (Percentage)10));
                Assert.False(first.FuzzyEquals(second, (Percentage)20));
                Assert.True(first.FuzzyEquals(second, (Percentage)30));
            }
        }
    }
}
