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ImageTests.cs
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ImageTests.cs
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// Copyright (c) The Avalonia Project. All rights reserved.
// Licensed under the MIT license. See licence.md file in the project root for full license information.
using Moq;
using Avalonia.Media;
using Avalonia.Media.Imaging;
using Xunit;
namespace Avalonia.Controls.UnitTests
{
public class ImageTests
{
[Fact]
public void Measure_Should_Return_Correct_Size_For_No_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.None;
target.Source = bitmap;
target.Measure(new Size(50, 50));
Assert.Equal(new Size(50, 50), target.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_Fill_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.Fill;
target.Source = bitmap;
target.Measure(new Size(50, 50));
Assert.Equal(new Size(50, 50), target.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_Uniform_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.Uniform;
target.Source = bitmap;
target.Measure(new Size(50, 50));
Assert.Equal(new Size(25, 50), target.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_UniformToFill_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.UniformToFill;
target.Source = bitmap;
target.Measure(new Size(50, 50));
Assert.Equal(new Size(50, 50), target.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_With_StretchDirection_DownOnly()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.StretchDirection = StretchDirection.DownOnly;
target.Source = bitmap;
target.Measure(new Size(150, 150));
Assert.Equal(new Size(50, 100), target.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_Infinite_Height()
{
var bitmap = CreateBitmap(50, 100);
var image = new Image();
image.Source = bitmap;
image.Measure(new Size(200, double.PositiveInfinity));
Assert.Equal(new Size(200, 400), image.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_Infinite_Width()
{
var bitmap = CreateBitmap(50, 100);
var image = new Image();
image.Source = bitmap;
image.Measure(new Size(double.PositiveInfinity, 400));
Assert.Equal(new Size(200, 400), image.DesiredSize);
}
[Fact]
public void Measure_Should_Return_Correct_Size_For_Infinite_Width_Height()
{
var bitmap = CreateBitmap(50, 100);
var image = new Image();
image.Source = bitmap;
image.Measure(new Size(double.PositiveInfinity, double.PositiveInfinity));
Assert.Equal(new Size(50, 100), image.DesiredSize);
}
[Fact]
public void Arrange_Should_Return_Correct_Size_For_No_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.None;
target.Source = bitmap;
target.Measure(new Size(50, 50));
target.Arrange(new Rect(0, 0, 100, 400));
Assert.Equal(new Size(50, 100), target.Bounds.Size);
}
[Fact]
public void Arrange_Should_Return_Correct_Size_For_Fill_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.Fill;
target.Source = bitmap;
target.Measure(new Size(50, 50));
target.Arrange(new Rect(0, 0, 25, 100));
Assert.Equal(new Size(25, 100), target.Bounds.Size);
}
[Fact]
public void Arrange_Should_Return_Correct_Size_For_Uniform_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.Uniform;
target.Source = bitmap;
target.Measure(new Size(50, 50));
target.Arrange(new Rect(0, 0, 25, 100));
Assert.Equal(new Size(25, 50), target.Bounds.Size);
}
[Fact]
public void Arrange_Should_Return_Correct_Size_For_UniformToFill_Stretch()
{
var bitmap = CreateBitmap(50, 100);
var target = new Image();
target.Stretch = Stretch.UniformToFill;
target.Source = bitmap;
target.Measure(new Size(50, 50));
target.Arrange(new Rect(0, 0, 25, 100));
Assert.Equal(new Size(25, 100), target.Bounds.Size);
}
private IBitmap CreateBitmap(int width, int height)
{
return Mock.Of<IBitmap>(x => x.Size == new Size(width, height));
}
}
}