public void GetMultipleFreeArgumentSets_ArgumentIsNull_ThrowsArgumentNullException()
{
// Arrange
PseudoList pseudoList = null;
// Act
var ex = Assert.Throws <ArgumentNullException>(() => pseudoList.GetMultipleFreeArgumentSets());
// Assert
Assert.That(ex.ParamName, Is.EqualTo("shouldBePseudoList"));
}