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using System;
using System.Threading.Tasks;
using Moq;
using NUnit.Framework;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Tests
{
internal abstract class ConstrainedPropertyViewModelTests<T, TReal, TViewModel>
: PropertyViewModelTests<T, TReal, TViewModel>
where TReal : IComparable<TReal>
where TViewModel : ConstrainedPropertyViewModel<T>
{
[Test]
public void SelfConstrainedValues ()
{
T max, min;
T value = GetConstrainedRandomValue (Random, out max, out min);
Assume.That (max, Is.GreaterThan (min));
Assume.That (value, Is.LessThan (max));
Assume.That (value, Is.GreaterThan (min));
var mockProperty = new Mock<IPropertyInfo> ();
var constrainedMock = mockProperty.As<ISelfConstrainedPropertyInfo<T>> ();
constrainedMock.SetupGet (pi => pi.MaxValue).Returns (max);
constrainedMock.SetupGet (pi => pi.MinValue).Returns (min);
var vm = GetViewModel (mockProperty.Object, new MockObjectEditor (mockProperty.Object));
Assert.That (vm.MaximumValue, Is.EqualTo (max));
Assert.That (vm.MinimumValue, Is.EqualTo (min));
vm.Value = value;
Assume.That (vm.Value, Is.EqualTo (value));
}
[Test]
public void SelfConstrainedBelow ()
{
T max, min;
T value = GetConstrainedRandomValueBelowBounds (Random, out max, out min);
Assume.That (max, Is.GreaterThan (min));
Assume.That (value, Is.LessThan (max));
Assume.That (value, Is.LessThan (min));
var mockProperty = new Mock<IPropertyInfo> ();
var constrainedMock = mockProperty.As<ISelfConstrainedPropertyInfo<T>> ();
constrainedMock.SetupGet (pi => pi.MaxValue).Returns (max);
constrainedMock.SetupGet (pi => pi.MinValue).Returns (min);
var vm = GetViewModel (mockProperty.Object, new MockObjectEditor (mockProperty.Object));
vm.Value = value;
Assert.That (vm.Value, Is.EqualTo (min));
}
[Test]
public void SelfConstrainedAbove ()
{
T max, min;
T value = GetConstrainedRandomValueAboveBounds (Random, out max, out min);
Assume.That (max, Is.GreaterThan (min));
Assume.That (value, Is.GreaterThan (max));
Assume.That (value, Is.GreaterThan (min));
var mockProperty = new Mock<IPropertyInfo> ();
var constrainedMock = mockProperty.As<ISelfConstrainedPropertyInfo<T>> ();
constrainedMock.SetupGet (pi => pi.MaxValue).Returns (max);
constrainedMock.SetupGet (pi => pi.MinValue).Returns (min);
var vm = GetViewModel (mockProperty.Object, new MockObjectEditor (mockProperty.Object));
vm.Value = value;
Assert.That (vm.Value, Is.EqualTo (max));
}
[Test]
public void PropertyClamped ()
{
T max, min;
T value = GetConstrainedRandomValue (Random, out max, out min);
Assume.That (max, Is.GreaterThan (min));
Assume.That (value, Is.LessThan (max));
Assume.That (value, Is.GreaterThan (min));
var mockMaxProperty = new Mock<IPropertyInfo> ();
var mockMinProperty = new Mock<IPropertyInfo> ();
var mockValueProperty = new Mock<IPropertyInfo> ();
var mockConstrainedValueProperty = mockValueProperty.As<IClampedPropertyInfo> ();
mockConstrainedValueProperty.SetupGet (pi => pi.MaximumProperty).Returns (mockMaxProperty.Object);
mockConstrainedValueProperty.SetupGet (pi => pi.MinimumProperty).Returns (mockMinProperty.Object);
var mockEditor = new Mock<IObjectEditor> ();
mockEditor.Setup (oe => oe.GetValueAsync<T> (mockMaxProperty.Object, null)).Returns (Task.FromResult (new ValueInfo<T> { Value = max, Source = ValueSource.Local }));
mockEditor.Setup (oe => oe.GetValueAsync<T> (mockMinProperty.Object, null)).Returns (Task.FromResult (new ValueInfo<T> { Value = min, Source = ValueSource.Local }));
var vm = GetViewModel (mockValueProperty.Object, mockEditor.Object);
Assert.That (vm.MinimumValue, Is.EqualTo (min));
Assert.That (vm.MaximumValue, Is.EqualTo (max));
}
protected abstract Tuple<T, T> MaxMin
{
get;
}
protected abstract T GetConstrainedRandomValue (Random rand, out T max, out T min);
protected abstract T GetConstrainedRandomValueAboveBounds (Random rand, out T max, out T min);
protected abstract T GetConstrainedRandomValueBelowBounds (Random rand, out T max, out T min);
}
}
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