private static void Test(double progress, IBrush oldBrush, IBrush newBrush)
{
var clock = new TestClock();
var border = new Border()
{
Background = oldBrush
};
BrushTransition sut = new BrushTransition
{
Duration = TimeSpan.FromSeconds(1),
Property = Border.BackgroundProperty
};
sut.Apply(border, clock, oldBrush, newBrush);
clock.Pulse(TimeSpan.Zero);
clock.Pulse(sut.Duration * progress);
Assert.NotNull(border.Background);
Assert.Equal(oldBrush.Opacity + (newBrush.Opacity - oldBrush.Opacity) * progress, border.Background.Opacity);
}
public void Check_Transitions_Interpolation_Positive_Bounds_Clamp()
{
var clock = new TestClock();
var border = new Border
{
Transitions = new Transitions
{
new DoubleTransition
{
Duration = TimeSpan.FromSeconds(1),
Property = Border.OpacityProperty,
}
}
};
border.Opacity = 0;
clock.Pulse(TimeSpan.FromSeconds(0));
clock.Pulse(TimeSpan.FromMilliseconds(1001));
Assert.Equal(0, border.Opacity);
}
public void TransitionInstance_With_Zero_Duration_Is_Completed_On_First_Tick()
{
var clock = new TestClock();
int i = 0;
var inst = new TransitionInstance(clock, TimeSpan.Zero, TimeSpan.Zero).Subscribe(nextValue =>
{
switch (i++)
{
case 0: Assert.Equal(0, nextValue); break;
case 1: Assert.Equal(1d, nextValue); break;
}
});
clock.Pulse(TimeSpan.FromMilliseconds(10));
}
public void TransitionInstance_Properly_Calculates_Delay_And_Duration_Values()
{
var clock = new TestClock();
int i = -1;
var inst = new TransitionInstance(clock, TimeSpan.FromMilliseconds(30), TimeSpan.FromMilliseconds(70)).Subscribe(nextValue =>
{
switch (i++)
{
case 0: Assert.Equal(0, nextValue); break;
case 1: Assert.Equal(0, nextValue); break;
case 2: Assert.Equal(0, nextValue); break;
case 3: Assert.Equal(0, nextValue); break;
case 4: Assert.Equal(Math.Round(10d / 70d, 4), Math.Round(nextValue, 4)); break;
case 5: Assert.Equal(Math.Round(20d / 70d, 4), Math.Round(nextValue, 4)); break;
case 6: Assert.Equal(Math.Round(30d / 70d, 4), Math.Round(nextValue, 4)); break;
case 7: Assert.Equal(Math.Round(40d / 70d, 4), Math.Round(nextValue, 4)); break;
case 8: Assert.Equal(Math.Round(50d / 70d, 4), Math.Round(nextValue, 4)); break;
case 9: Assert.Equal(Math.Round(60d / 70d, 4), Math.Round(nextValue, 4)); break;
case 10: Assert.Equal(1d, nextValue); break;
}
});
for (int z = 0; z <= 10; z++)
{
clock.Pulse(TimeSpan.FromMilliseconds(10));
}
}