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ScaleTests.cs
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ScaleTests.cs
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using System;
using System.Collections;
using System.Threading.Tasks;
using NUnit.Framework;
using AView = Android.Views.View;
namespace Xamarin.Forms.Platform.Android.UnitTests
{
[TestFixture]
public class ScaleTests : PlatformTestFixture
{
static IEnumerable ScaleXCases
{
get
{
foreach (var element in BasicElements)
{
element.ScaleX = 0.45;
yield return CreateTestCase(element);
}
}
}
static IEnumerable ScaleYCases
{
get
{
foreach (var element in BasicElements)
{
element.ScaleY = 1.23;
yield return CreateTestCase(element);
}
}
}
void AssertScaleConsistent(View view, Func<View, double> getScale,
Func<AView, double> getNativeScale)
{
using (var renderer = GetRenderer(view))
{
var expected = getScale(view);
var nativeView = renderer.View;
ParentView(nativeView);
Assert.That(getNativeScale(nativeView), Is.EqualTo(expected).Within(0.01));
UnparentView(nativeView);
}
}
[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 => ver.View.ScaleX, requiresParent: true);
Assert.That((double)actual, Is.EqualTo(expected).Within(0.01d));
}
[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 => ver.View.ScaleY, requiresParent: true);
Assert.That((double)actual, Is.EqualTo(expected).Within(0.01d));
}
}
}