public void convert_back_returns_mapped_value_if_mapping_exists()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
converter.Mappings.Add(new Mapping(null, "NULL"));
converter.Mappings.Add(new Mapping(123, 123.5d));
Assert.Same("from", converter.ConvertBack("to", null, null, null));
Assert.Null(converter.ConvertBack("NULL", null, null, null));
Assert.Equal(123, converter.ConvertBack(123.5d, null, null, null));
}
public void convert_back_honors_fallback_behavior_if_conversion_fails()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(null, null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack("abc", null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnOriginalValue;
Assert.Null(converter.ConvertBack(null, null, null, null));
Assert.Same("abc", converter.ConvertBack("abc", null, null, null));
Assert.Equal(123, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnFallbackValue;
converter.FallbackValue = "my fallback value";
Assert.Equal("my fallback value", converter.ConvertBack(null, null, null, null));
Assert.Equal("my fallback value", converter.ConvertBack("abc", null, null, null));
Assert.Equal("my fallback value", converter.ConvertBack(123, null, null, null));
}
public void convert_back_honors_fallback_behavior_if_conversion_fails()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(null, null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack("abc", null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnOriginalValue;
Assert.Null(converter.ConvertBack(null, null, null, null));
Assert.Same("abc", converter.ConvertBack("abc", null, null, null));
Assert.Equal(123, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnFallbackValue;
converter.FallbackValue = "my fallback value";
Assert.Equal("my fallback value", converter.ConvertBack(null, null, null, null));
Assert.Equal("my fallback value", converter.ConvertBack("abc", null, null, null));
Assert.Equal("my fallback value", converter.ConvertBack(123, null, null, null));
}
public void convert_back_returns_default_value_if_no_mapping_exists()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
converter.FallbackBehavior = FallbackBehavior.ReturnUnsetValue;
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(null, null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack("abc", null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnOriginalValue;
Assert.Null(converter.ConvertBack(null, null, null, null));
Assert.Same("abc", converter.ConvertBack("abc", null, null, null));
Assert.Equal(123, converter.ConvertBack(123, null, null, null));
}
public void convert_back_returns_mapped_value_if_mapping_exists()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
converter.Mappings.Add(new Mapping(null, "NULL"));
converter.Mappings.Add(new Mapping(123, 123.5d));
Assert.Same("from", converter.ConvertBack("to", null, null, null));
Assert.Null(converter.ConvertBack("NULL", null, null, null));
Assert.Equal(123, converter.ConvertBack(123.5d, null, null, null));
}
public void convert_back_returns_default_value_if_no_mapping_exists()
{
var converter = new MapConverter();
converter.Mappings.Add(new Mapping("from", "to"));
converter.FallbackBehavior = FallbackBehavior.ReturnUnsetValue;
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(null, null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack("abc", null, null, null));
Assert.Same(DependencyProperty.UnsetValue, converter.ConvertBack(123, null, null, null));
converter.FallbackBehavior = FallbackBehavior.ReturnOriginalValue;
Assert.Null(converter.ConvertBack(null, null, null, null));
Assert.Same("abc", converter.ConvertBack("abc", null, null, null));
Assert.Equal(123, converter.ConvertBack(123, null, null, null));
}