public void ShouldReturnNullStringForNullValue()
{
object converted = new NullValueConverter().Convert(null, null, null, null);
Assert.IsInstanceOfType(converted, typeof(string));
Assert.AreEqual<string>(NullValueConverter.NullString, (string)converted);
}
public void ShouldConvertProvidedValue()
{
object converted = new NullValueConverter().Convert("test", null, null, null);
Assert.IsInstanceOfType(converted, typeof(string));
Assert.AreEqual<string>("test", (string)converted);
}
public void ShouldConvertNullToParameterValue()
{
object converted = new NullValueConverter().Convert(null, null, "<null>", null);
Assert.IsInstanceOfType(converted, typeof(string));
Assert.AreEqual("<null>", converted);
}
public void ShouldConvertBackNullString()
{
object converted = new NullValueConverter().ConvertBack(NullValueConverter.NullString, null, null, null);
Assert.IsNull(converted);
}
public void ShouldConvertBackEmptyString()
{
object converted = new NullValueConverter().ConvertBack(string.Empty, null, null, null);
Assert.IsNull(converted);
}