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using System;
using Moq;
using NUnit.Framework;
using NUnit.Framework.Constraints;
using Xamarin.PropertyEditing.Drawing;
using Xamarin.PropertyEditing.ViewModels;
namespace Xamarin.PropertyEditing.Tests
{
internal class SolidBrushPropertyViewModelTests : BrushPropertyViewModelTests
{
private static readonly string[] SampleColorSpaces = new[] {
"genericRGBLinear", "genericCMYK"
};
[Test]
public void ColorSpaces ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
Assert.That (vm.Solid.ColorSpaces, new CollectionEquivalentConstraint (SampleColorSpaces));
}
[Test]
public void ValueChangesTriggerSolidColorAndColorSpacePropertyChangesOnly ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
var colorChanged = false;
var colorSpaceChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
CommonColor initialColor = vm.Solid.InitialColor;
CommonColor lastColor = vm.Solid.LastColor;
CommonColor shade = vm.Solid.Shade;
CommonColor hueColor = vm.Solid.HueColor;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.ColorSpace):
colorSpaceChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
}
};
CommonColor newColor = GetNewRandomColor (Random, vm.Solid.Color);
vm.Value = new CommonSolidBrush (newColor);
Assert.IsTrue (colorChanged);
Assert.AreEqual (newColor, vm.Solid.Color);
Assert.IsTrue (colorSpaceChanged);
Assert.IsFalse (hueColorChanged);
Assert.AreEqual (hueColor, vm.Solid.HueColor);
Assert.IsFalse (shadeChanged);
Assert.AreEqual (shade, vm.Solid.Shade);
Assert.AreEqual (initialColor, vm.Solid.InitialColor);
Assert.AreEqual (lastColor, vm.Solid.LastColor);
}
[Test]
public void UpdatingHueOnGreyDoesntCauseColorToChange ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
var grey = new CommonColor (20, 20, 20);
vm.Value = new CommonSolidBrush (grey);
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
}
};
vm.Solid.HueColor = new CommonColor (0, 0, 255);
Assert.IsFalse (colorChanged);
Assert.AreEqual (grey, vm.Solid.Color);
Assert.IsTrue (hueColorChanged);
Assert.IsFalse (shadeChanged);
}
[Test]
public void UpdatingHueOnSaturatedColorsCausesColorToChange ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
var blue = new CommonColor (20, 20, 255);
vm.Value = new CommonSolidBrush (blue);
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
}
};
vm.Solid.HueColor = new CommonColor (255, 0, 0);
Assert.IsTrue (colorChanged);
Assert.IsTrue (hueColorChanged);
Assert.IsFalse (shadeChanged);
}
[Test]
public void UpdatingShadeCausesColorToChange ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
vm.Value = GetRandomTestValue (Random);
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
var alpha = vm.Solid.Color.A;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
}
};
CommonColor newShade = GetNewRandomColor (Random, vm.Solid.Shade);
vm.Solid.Shade = newShade;
Assert.IsTrue (colorChanged);
Assert.IsFalse (hueColorChanged);
Assert.IsTrue (shadeChanged);
Assert.AreEqual (alpha, vm.Solid.Color.A);
Assert.AreEqual (newShade.R, vm.Solid.Color.R);
Assert.AreEqual (newShade.G, vm.Solid.Color.G);
Assert.AreEqual (newShade.B, vm.Solid.Color.B);
}
[Test]
public void UpdatingColorCausesParentValueToChangeAndInitialColorToBeSetOnTheFirstTime ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
vm.Value = GetRandomTestValue (Random);
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
var parentChanged = false;
var alpha = vm.Solid.Color.A;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
}
};
vm.PropertyChanged += (s, e) => {
parentChanged = true;
};
CommonColor newColor = GetNewRandomColor (Random, vm.Solid.Color);
vm.Solid.Color = newColor;
Assert.IsTrue (parentChanged);
Assert.IsTrue (colorChanged);
Assert.IsFalse (hueColorChanged);
Assert.IsFalse (shadeChanged);
Assert.AreEqual (newColor, vm.Solid.Color);
Assert.AreEqual (newColor, vm.Solid.InitialColor);
}
[Test]
public void InitialAndLastColorDontChangeOnceSet ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
vm.Value = GetRandomTestValue (Random);
CommonColor initialColor = vm.Solid.InitialColor;
CommonColor lastColor = vm.Solid.LastColor;
CommonColor newColor = GetNewRandomColor (Random, vm.Solid.Color);
vm.Solid.Color = newColor;
Assert.AreEqual (initialColor, vm.Solid.InitialColor);
Assert.AreEqual (lastColor, vm.Solid.InitialColor);
}
[Test]
public void CommitLastColorChangesLastColorAndShade ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
vm.Value = GetRandomTestValue (Random);
CommonColor lastColor = vm.Solid.LastColor;
CommonColor newColor = GetNewRandomColor (Random, vm.Solid.Color);
vm.Solid.Color = newColor;
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
var lastColorChanged = false;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
case nameof (SolidBrushViewModel.LastColor):
lastColorChanged = true;
break;
}
};
vm.Solid.CommitLastColor ();
Assert.IsTrue (lastColorChanged);
Assert.IsTrue (shadeChanged);
Assert.IsFalse (colorChanged);
Assert.IsFalse (hueColorChanged);
Assert.AreEqual (newColor, vm.Solid.LastColor);
}
[Test]
public void CommitHueChangesHueOnly ()
{
BrushPropertyViewModel vm = PrepareMockViewModel ();
vm.Value = GetRandomTestValue (Random);
CommonColor hueColor = vm.Solid.HueColor;
CommonColor newColor = GetNewRandomColor (Random, vm.Solid.Color);
vm.Solid.Color = newColor;
var colorChanged = false;
var hueColorChanged = false;
var shadeChanged = false;
var lastColorChanged = false;
vm.Solid.PropertyChanged += (s, e) => {
switch (e.PropertyName) {
case nameof (SolidBrushViewModel.Color):
colorChanged = true;
break;
case nameof (SolidBrushViewModel.HueColor):
hueColorChanged = true;
break;
case nameof (SolidBrushViewModel.Shade):
shadeChanged = true;
break;
case nameof (SolidBrushViewModel.LastColor):
lastColorChanged = true;
break;
}
};
vm.Solid.CommitHue ();
Assert.IsTrue (hueColorChanged);
Assert.IsFalse (lastColorChanged);
Assert.IsFalse (shadeChanged);
Assert.IsFalse (colorChanged);
}
protected override CommonBrush GetRandomTestValue (Random rand)
{
CommonColor color = rand.NextColor ();
var colorSpace = rand.NextString ();
var opacity = rand.NextDouble ();
return new CommonSolidBrush (color, colorSpace, opacity);
}
private static CommonColor GetNewRandomColor (Random rand, CommonColor oldColor)
{
CommonColor newColor = rand.NextColor ();
while (newColor == oldColor) newColor = rand.NextColor ();
return newColor;
}
private static BrushPropertyViewModel PrepareMockViewModel ()
{
var mockProperty = new Mock<IPropertyInfo> ();
mockProperty.SetupGet (pi => pi.Type).Returns (typeof (CommonSolidBrush));
mockProperty.As<IColorSpaced> ().SetupGet (pi => pi.ColorSpaces).Returns (SampleColorSpaces);
var mockEditor = new MockObjectEditor (mockProperty.Object);
return new BrushPropertyViewModel (MockEditorProvider.MockPlatform, mockProperty.Object, new[] { mockEditor });
}
}
}
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