public void ShouldThrowIfTargetIsNotABool()
{
var ibc = new InverseBooleanConverter();
Assert.Throws <InvalidOperationException>(() => ibc.Convert(false, null, null, null));
Assert.Throws <InvalidOperationException>(() => ibc.ConvertBack(false, null, null, null));
Assert.Throws <InvalidOperationException>(() => ibc.Convert(false, typeof(string), null, null));
Assert.Throws <InvalidOperationException>(() => ibc.ConvertBack(false, typeof(string), null, null));
}
public void ConvertBackTest()
{
var inverse = testConverter.ConvertBack(!TestValue, null, null, null);
Assert.IsInstanceOfType(inverse, typeof(bool));
Assert.AreEqual(inverse, TestValue);
}
public void InverseBooleanConverter_ConvertBack_ThrowsNotImplementedException()
{
// Action
Action convertBackAction = () => inverseBooleanConverter.ConvertBack(null, null, null, null);
// Assert
convertBackAction.Should().Throw <NotImplementedException>();
}
private void CheckConvertBack(object value, bool target, InverseBooleanConverter converter)
{
var result = converter.ConvertBack(value, null, null, CultureInfo.CurrentCulture);
if (result is bool boolean)
{
Assert.AreEqual(target, boolean);
}
else
{
Assert.Fail($"The result should be a boolean but actually is '{result?.GetType().Name ?? "[UNKNOWN]"}'.");
}
}
public void ShouldInverseABool()
{
var ibc = new InverseBooleanConverter();
var result = ibc.Convert(false, typeof(bool), null, null);
Assert.IsType <bool>(result);
Assert.True((bool)result);
result = ibc.ConvertBack(result, typeof(bool), null, null);
Assert.IsType <bool>(result);
Assert.False((bool)result);
}
public void ConvertBack_ValueIsNotBoolean_ReturnsFalse()
{
var result = _target.ConvertBack("hans", typeof(bool), null, CultureInfo.InvariantCulture);
Assert.IsTrue((bool)result);
}
public void TestConvertBack(bool value, bool expected)
{
var actual = _inverseBooleanConverter.ConvertBack(value, null, null, null);
Assert.AreEqual(expected, actual);
}
public void VerifyConverterConvertsBackThrows()
{
var converter = new InverseBooleanConverter();
Assert.Throws <NotSupportedException>(() => converter.ConvertBack(null, null, null, null));
}