public void ConvertWithEmptyValuesShouldReturnTypesDefault(
int index)
{
var converter = new AlternationConverter<int>();
var asNonGeneric = converter as IValueConverter;
Assert.Equal(0, converter.Convert(index, CultureInfo.InvariantCulture));
Assert.Equal(0, asNonGeneric.Convert(index, typeof(int), null, CultureInfo.InvariantCulture));
}
public void ConvertWithSingleValueShouldAlwaysReturnIt(
int index)
{
var converter = new AlternationConverter<int>();
converter.Values.Add(42);
var asNonGeneric = converter as IValueConverter;
Assert.Equal(42, converter.Convert(index, CultureInfo.InvariantCulture));
Assert.Equal(42, asNonGeneric.Convert(index, typeof(int), null, CultureInfo.InvariantCulture));
}
public void ConvertWithTwoValuesShouldAlternateThose(
int index,
bool expected)
{
var converter = new AlternationConverter<bool>();
converter.Values.Add(true);
converter.Values.Add(false);
var asNonGeneric = converter as IValueConverter;
Assert.Equal(expected, converter.Convert(index, CultureInfo.InvariantCulture));
Assert.Equal(expected, asNonGeneric.Convert(index, typeof(bool), null, CultureInfo.InvariantCulture));
}
private void InitPalette()
{
var brushes = from prop in typeof(Brushes).GetProperties()
let brush = (SolidColorBrush)prop.GetValue(null, null)
let hsbColor = HsbColor.FromArgbColor(brush.Color)
orderby hsbColor.Hue
select new SolidColorBrush(hsbColor.ToArgbColor());
AlternationConverter converter = new AlternationConverter();
foreach (var brush in brushes)
{
converter.Values.Add(brush);
}
Resources.Add("fillsConverter", converter);
}
public void ConvertWithThreeValuesWorksAsExpected(
int index,
Visibility expected)
{
var converter = new AlternationConverter<Visibility>();
converter.Values.Add(Visibility.Visible);
converter.Values.Add(Visibility.Collapsed);
converter.Values.Add(Visibility.Hidden);
var asNonGeneric = converter as IValueConverter;
Assert.Equal(
expected,
converter.Convert(index, CultureInfo.InvariantCulture));
Assert.Equal(
expected,
asNonGeneric.Convert(index, typeof(Visibility), null, CultureInfo.InvariantCulture));
}
public void ConvertBackWorksAsExpected(
Visibility value,
int expectedIndex)
{
var converter = new AlternationConverter<Visibility>();
converter.Values.Add(Visibility.Visible);
converter.Values.Add(Visibility.Collapsed);
converter.Values.Add(Visibility.Hidden);
Assert.Equal(expectedIndex, converter.ConvertBack(value, CultureInfo.InvariantCulture));
}
public void ConvertBackWithValueNotFoundShouldReturnMinus1(
Visibility value)
{
var converter = new AlternationConverter<Visibility>();
Assert.Equal(-1, converter.ConvertBack(value, CultureInfo.InvariantCulture));
}
