EXAMPLES.md

Stack Test Examples

This file summarizes and shows the test code for the generic stack implementation.

---

TestStackBasic

func TestStackBasic(t *testing.T) {
	stack := New[int]()

	if !stack.IsEmpty() {
		t.Errorf("Expected stack to be empty")
	}

	stack.Push(10)
	stack.Push(20)
	stack.Push(30)

	if stack.Size() != 3 {
		t.Errorf("Expected stack size 3, got %d", stack.Size())
	}

	val, ok := stack.PeekNthElement(0)
	if !ok || val != 30 {
		t.Errorf("PeekNthElement(0) = %v, %v; want 30, true", val, ok)
	}

	val, ok = stack.PeekNthElement(1)
	if !ok || val != 20 {
		t.Errorf("PeekNthElement(1) = %v, %v; want 20, true", val, ok)
	}

	val, ok = stack.PeekNthElement(2)
	if !ok || val != 10 {
		t.Errorf("PeekNthElement(2) = %v, %v; want 10, true", val, ok)
	}

	val, ok = stack.Pop()
	if !ok || val != 30 {
		t.Errorf("Pop() = %v, %v; want 30, true", val, ok)
	}

	val, ok = stack.Pop()
	if !ok || val != 20 {
		t.Errorf("Pop() = %v, %v; want 20, true", val, ok)
	}

	val, ok = stack.Pop()
	if !ok || val != 10 {
		t.Errorf("Pop() = %v, %v; want 10, true", val, ok)
	}

	if !stack.IsEmpty() {
		t.Errorf("Expected stack to be empty after popping all elements")
	}

	_, ok = stack.Pop()
	if ok {
		t.Errorf("Pop() on empty stack should return ok=false")
	}
}