public void TestConvertWithWrongValue()
        {
            var converter = new ListToStringConverter();

            Action action = () => converter.Convert(new [] { 1, 2, 3 }, null, null, null);

            action.Should().Throw <InvalidOperationException>();
        }
        public void ListToStringConverter(object value, object parameter, object expectedResult)
        {
            var listToStringConverter = new ListToStringConverter();

            var result = listToStringConverter.Convert(value, null, parameter, null);

            Assert.AreEqual(result, expectedResult);
        }
        public void TestConvert()
        {
            var converter = new ListToStringConverter();

            var result = converter.Convert(new [] { "one", "two", "three" }, null, null, null);

            result.Should().Be($"one{Environment.NewLine}two{Environment.NewLine}three");
        }
        public void InValidConverterParametersThrowArgumentException(object parameter)
        {
            var listToStringConverter = new ListToStringConverter();

            Assert.Throws <ArgumentException>(() => listToStringConverter.Convert(new object[0], null, parameter, null));
        }
        public void InValidConverterValuesThrowArgumentException(object value)
        {
            var listToStringConverter = new ListToStringConverter();

            Assert.Throws <ArgumentException>(() => listToStringConverter.Convert(value, null, null, null));
        }