public void AddFirst_should_add_data_on_first_position()
{
//Arrange
var list = new Structures.LinkedList <int>();
list.AddFirts(1);
list.AddFirts(2);
var expectedContent = "21";
//Act
var content = GetStringOfElements(list);
//Assert
Assert.AreEqual(expectedContent, content);
}
public void AddFirst_should_return_list_with_one_element_if_it_was_empty()
{
//Arrange
var list = new Structures.LinkedList <int>();
list.AddFirts(1);
var expectedLength = 1;
//Act
var length = list.Length;
//Assert
Assert.AreEqual(expectedLength, length);
}