/
ScaleTests.cs
98 lines (88 loc) · 2.44 KB
/
ScaleTests.cs
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using System;
using System.Collections;
using System.Threading.Tasks;
using NUnit.Framework;
using Windows.UI.Xaml;
using Windows.UI.Xaml.Media;
namespace Xamarin.Forms.Platform.UAP.UnitTests
{
[TestFixture]
public class ScaleTests : PlatformTestFixture
{
static IEnumerable ScaleXCases
{
get
{
foreach (var element in BasicViews)
{
element.ScaleX = 0.45;
yield return CreateTestCase(element);
}
}
}
static IEnumerable ScaleYCases
{
get
{
foreach (var element in BasicViews)
{
element.ScaleY = 1.23;
yield return CreateTestCase(element);
}
}
}
static IEnumerable ScaleCases
{
get
{
foreach (var element in BasicViews)
{
element.Scale = 0.5;
yield return CreateTestCase(element);
}
}
}
[Test, Category("ScaleX"), TestCaseSource(nameof(ScaleXCases))]
[Description("View X scale should match renderer X scale")]
public async Task ScaleXConsistent(View view)
{
var expected = view.ScaleX;
var actual = await GetRendererProperty(view, ver => GetScaleX(ver.ContainerElement));
Assert.That(actual, Is.EqualTo(expected).Within(0.001d));
}
[Test, Category("ScaleY"), TestCaseSource(nameof(ScaleYCases))]
[Description("View Y scale should match renderer Y scale")]
public async Task ScaleYConsistent(View view)
{
var expected = view.ScaleY;
var actual = await GetRendererProperty(view, ver => GetScaleY(ver.ContainerElement));
Assert.That(actual, Is.EqualTo(expected).Within(0.001d));
}
[Test, Category("Scale"), TestCaseSource(nameof(ScaleCases))]
[Description("View scale should match renderer scale")]
public async Task ScaleConsistent(View view)
{
var expected = view.Scale;
var actualX = await GetRendererProperty(view, ver => GetScaleY(ver.ContainerElement));
var actualY = await GetRendererProperty(view, ver => GetScaleY(ver.ContainerElement));
Assert.That(actualX, Is.EqualTo(expected).Within(0.001d));
Assert.That(actualY, Is.EqualTo(expected).Within(0.001d));
}
double GetScaleX(FrameworkElement fe)
{
if (fe.RenderTransform is CompositeTransform compositeTransform)
{
return compositeTransform.ScaleX;
}
throw new Exception("Could not determine ScaleX");
}
double GetScaleY(FrameworkElement fe)
{
if (fe.RenderTransform is CompositeTransform compositeTransform)
{
return compositeTransform.ScaleY;
}
throw new Exception("Could not determine ScaleY");
}
}
}