public void ShouldReturnVisible_WhenIsCheckedEqualsTrue()
        {
            //arrange
            var converter = new IsCheckedToVisibleConverter();

            //act
            var result = converter.Convert(true, null, null, CultureInfo.InvariantCulture);

            //assert
            Assert.AreEqual(Visibility.Visible, result);
        }
        public void ShouldReturnHidden_WhenIsCheckedEqualsNull()
        {
            //arrange
            var converter = new IsCheckedToVisibleConverter();

            //act
            var result = converter.Convert(null, null, null, CultureInfo.InvariantCulture);

            //assert
            Assert.AreEqual(Visibility.Collapsed, result);
        }