package container

import (
	"testing"
)

func TestQueueDequeue(t *testing.T) {
	// Create a new queue
	q := NewQueue[int]()

	// Enqueue some elements
	q.Enqueue(1)
	q.Enqueue(2)
	q.Enqueue(3)

	// Dequeue the elements and check if they match the expected values
	value := q.Dequeue()
	if value != 1 {
		t.Errorf("Expected dequeued value to be 1, but got %v", value)
	}

	value = q.Dequeue()
	if value != 2 {
		t.Errorf("Expected dequeued value to be 2, but got %v", value)
	}

	value = q.Dequeue()
	if value != 3 {
		t.Errorf("Expected dequeued value to be 3, but got %v", value)
	}

	// Try to dequeue from an empty queue and expect a panic
	defer func() {
		if r := recover(); r == nil {
			t.Errorf("Expected Dequeue() to panic, but it didn't")
		}
	}()

	q.Dequeue()
}

func TestQueueHasElement(t *testing.T) {
	// Create a new queue
	q := NewQueue[int]()

	// Check if the queue has elements, expect false
	if q.HasElement() {
		t.Errorf("Expected HasElement() to return false, but got true")
	}

	// Enqueue an element
	q.Enqueue(1)

	// Check if the queue has elements, expect true
	if !q.HasElement() {
		t.Errorf("Expected HasElement() to return true, but got false")
	}

	// Dequeue the element
	q.Dequeue()

	// Check if the queue has elements, expect false
	if q.HasElement() {
		t.Errorf("Expected HasElement() to return false, but got true")
	}
}