public void ConvertsToBrush()
{
var falseBrush = new SolidColorBrush(Colors.Black);
var trueBrush = new SolidColorBrush(Colors.White);
var converter = new BoolToBrushConverter()
{
FalseBrush = falseBrush, TrueBrush = trueBrush
};
using var source = new BehaviorSubject <bool?>(null);
var convertedBrush = (Brush?)converter.Convert(false, typeof(Brush), null, CultureInfo.InvariantCulture);
Assert.AreEqual(falseBrush, convertedBrush);
convertedBrush = (Brush?)converter.Convert(true, typeof(Brush), null, CultureInfo.InvariantCulture);
Assert.AreEqual(trueBrush, convertedBrush);
}
public void Cannot_Get_Brush_From_Null_Value()
{
//Arrange
BoolToBrushConverter converter = new BoolToBrushConverter();
//Act
ActualValueDelegate <object> testDelegate = () => converter.Convert(null, typeof(Brush), null, CultureInfo.CurrentCulture);
//Assert
Assert.That(testDelegate, Throws.TypeOf <NullReferenceException>());
}
public void Cannot_Get_Brush_From_Invalid_Type_Value()
{
//Arrange
var convertFrom = "string";
BoolToBrushConverter converter = new BoolToBrushConverter();
//Act
ActualValueDelegate <object> testDelegate = () => converter.Convert(convertFrom, typeof(Brush), null, CultureInfo.CurrentCulture);
//Assert
Assert.That(testDelegate, Throws.TypeOf <InvalidCastException>());
}
public void Can_Get_White_Brush_From_True_Value()
{
//Arrange
var convertFrom = false;
BoolToBrushConverter converter = new BoolToBrushConverter();
//Act
var result = converter.Convert(convertFrom, typeof(Brush), null, CultureInfo.CurrentCulture);
//Assert
Assert.AreEqual(result, Brushes.White);
}