public void Push_InputIsValid_AddObjectToTheStack()
{
var stack = new TestNinja.Fundamentals.Stack <string>();
stack.Push("a");
Assert.That(stack.Count, Is.EqualTo(1));
}
public void Peek_StackWithObjects_ReturnObjectOnTheTop()
{
// arrange
var stack = new TestNinja.Fundamentals.Stack <string>();
stack.Push("a"); stack.Push("b"); stack.Push("c");
// act
var result = stack.Peek();
//assert
Assert.That(result, Is.EqualTo("c"));
}
public void Pop_StackWithObject_RemoveObjectOnTheTop()
{
// arrange
var stack = new TestNinja.Fundamentals.Stack <string>();
stack.Push("a"); stack.Push("b"); stack.Push("c");
// act
stack.Pop();
//assert
Assert.That(stack.Count, Is.EqualTo(2));
}
public void Peek_EmptyStack_ThrowInvalidOperationException()
{
var stack = new TestNinja.Fundamentals.Stack <string>();
Assert.That(() => stack.Peek(), Throws.InvalidOperationException);
}
public void Push_InputIsNull_ThrowArgumentNullException()
{
var stack = new TestNinja.Fundamentals.Stack <string>();
Assert.That(() => stack.Push(null), Throws.ArgumentNullException);
}
public void Count_EmptyStack_ReturnZero()
{
var stack = new TestNinja.Fundamentals.Stack <string>();
Assert.That(stack.Count, Is.EqualTo(0));
}
