using Xunit;

namespace Avalonia.Controls.UnitTests
{
    public class WrapPanelTests
    {
        [Fact]
        public void Lays_Out_Horizontally_On_Separate_Lines()
        {
            var target = new WrapPanel()
                         {
                             Width = 100,
                             Children = new Controls
                                        {
                                            new Border { Height = 50, Width = 100 },
                                            new Border { Height = 50, Width = 100 },
                                        }
                         };

            target.Measure(Size.Infinity);
            target.Arrange(new Rect(target.DesiredSize));

            Assert.Equal(new Size(100, 100), target.Bounds.Size);
            Assert.Equal(new Rect(0, 0, 100, 50), target.Children[0].Bounds);
            Assert.Equal(new Rect(0, 50, 100, 50), target.Children[1].Bounds);
        }

        [Fact]
        public void Lays_Out_Horizontally_On_A_Single_Line()
        {
            var target = new WrapPanel()
                         {
                             Width = 200,
                             Children = new Controls
                                        {
                                            new Border { Height = 50, Width = 100 },
                                            new Border { Height = 50, Width = 100 },
                                        }
                         };

            target.Measure(Size.Infinity);
            target.Arrange(new Rect(target.DesiredSize));

            Assert.Equal(new Size(200, 50), target.Bounds.Size);
            Assert.Equal(new Rect(0, 0, 100, 50), target.Children[0].Bounds);
            Assert.Equal(new Rect(100, 0, 100, 50), target.Children[1].Bounds);
        }

        [Fact]
        public void Lays_Out_Vertically_Children_On_A_Single_Line()
        {
            var target = new WrapPanel()
                         {
                             Orientation = Orientation.Vertical,
                             Height = 120,
                             Children = new Controls
                                        {
                                            new Border { Height = 50, Width = 100 },
                                            new Border { Height = 50, Width = 100 },
                                        }
                         };

            target.Measure(Size.Infinity);
            target.Arrange(new Rect(target.DesiredSize));

            Assert.Equal(new Size(100, 120), target.Bounds.Size);
            Assert.Equal(new Rect(0, 0, 100, 50), target.Children[0].Bounds);
            Assert.Equal(new Rect(0, 50, 100, 50), target.Children[1].Bounds);
        }

        [Fact]
        public void Lays_Out_Vertically_On_Separate_Lines()
        {
            var target = new WrapPanel()
                         {
                             Orientation = Orientation.Vertical,
                             Height = 60,
                             Children = new Controls
                                        {
                                            new Border { Height = 50, Width = 100 },
                                            new Border { Height = 50, Width = 100 },
                                        }
                         };

            target.Measure(Size.Infinity);
            target.Arrange(new Rect(target.DesiredSize));

            Assert.Equal(new Size(200, 60), target.Bounds.Size);
            Assert.Equal(new Rect(0, 0, 100, 50), target.Children[0].Bounds);
            Assert.Equal(new Rect(100, 0, 100, 50), target.Children[1].Bounds);
        }
    }
}