public void ConvertBack_ValidStringToBoolean_ReturnsExpected(object value, bool expectedResult, string whenTrue, string whenFalse)
{
var uut = new BooleanToStringValueConverterAndValidationRule()
{
WhenTrue = whenTrue,
WhenFalse = whenFalse
};
var targetType = typeof(bool);
var parameter = (object)null;
var culture = (CultureInfo)null;
uut.ConvertBack(value, targetType, parameter, culture).ShouldBe(expectedResult);
}
public void ConvertBack_ConversionIsInvalid_ThrowsException(object value, Type targetType)
{
var uut = new BooleanToStringValueConverterAndValidationRule();
var parameter = (object)null;
var culture = (CultureInfo)null;
var result = Should.Throw <NotSupportedException>(() =>
{
uut.ConvertBack(value, targetType, parameter, culture);
});
result.ShouldSatisfyAllConditions(
() => result.Message.ShouldContain(value?.GetType().Name ?? "null"),
() => result.Message.ShouldContain(targetType.Name));
}
public void ConvertBack_TargetTypeIsNull_ThrowsException()
{
var uut = new BooleanToStringValueConverterAndValidationRule();
var value = false;
var targetType = (Type)null;
var parameter = (object)null;
var culture = (CultureInfo)null;
var result = Should.Throw <ArgumentNullException>(() =>
{
uut.ConvertBack(value, targetType, parameter, culture);
});
result.ParamName.ShouldBe(nameof(targetType));
}
public void ConvertBack_InvalidStringToBoolean_ThrowsException(object value, string whenTrue, string whenFalse)
{
var uut = new BooleanToStringValueConverterAndValidationRule()
{
WhenTrue = whenTrue,
WhenFalse = whenFalse
};
var targetType = typeof(bool);
var parameter = (object)null;
var culture = (CultureInfo)null;
var result = Should.Throw <ArgumentException>(() =>
{
uut.ConvertBack(value, targetType, parameter, culture);
});
result.ShouldSatisfyAllConditions(
() => result.ParamName.ShouldBe(nameof(value)),
() => result.Message.ShouldContain(whenTrue),
() => result.Message.ShouldContain(whenFalse));
}