Merge pull request #120 from wmoooid/test-useQueue

[test]: useQueue

src/hooks/useQueue/useQueue.test.ts

@@ -0,0 +1,133 @@
+import { act, renderHook } from '@testing-library/react';
+
+import { useQueue } from './useQueue';
+
+it('Should use queue', () => {
+  const { result } = renderHook(() => useQueue());
+
+  expect(Array.isArray(result.current.queue)).toBeTruthy();
+  expect(result.current.first).toBeUndefined();
+  expect(result.current.last).toBeUndefined();
+  expect(result.current.size).toBe(0);
+  expect(result.current.add).toBeTypeOf('function');
+  expect(result.current.remove).toBeTypeOf('function');
+  expect(result.current.clear).toBeTypeOf('function');
+});
+
+it('Should initialize the queue with initial value', () => {
+  const initialQueue = [1, 2, 3];
+  const { result } = renderHook(() => useQueue(initialQueue));
+
+  expect(result.current.queue).toEqual(initialQueue);
+  expect(result.current.first).toBe(1);
+  expect(result.current.last).toBe(3);
+  expect(result.current.size).toBe(3);
+});
+
+it('Should add an element to the queue', () => {
+  const { result } = renderHook(() => useQueue());
+
+  act(() => result.current.add(1));
+
+  expect(result.current.queue).toEqual([1]);
+  expect(result.current.first).toBe(1);
+  expect(result.current.last).toBe(1);
+  expect(result.current.size).toBe(1);
+
+  act(() => result.current.add(2));
+
+  expect(result.current.queue).toEqual([1, 2]);
+  expect(result.current.first).toBe(1);
+  expect(result.current.last).toBe(2);
+  expect(result.current.size).toBe(2);
+});
+
+it('Should remove an element from the queue and return it value', () => {
+  const { result } = renderHook(() => useQueue([1, 2, 3]));
+
+  let removedElement;
+
+  act(() => {
+    removedElement = result.current.remove();
+  });
+
+  expect(removedElement).toBe(1);
+  expect(result.current.queue).toEqual([2, 3]);
+  expect(result.current.first).toBe(2);
+  expect(result.current.last).toBe(3);
+  expect(result.current.size).toBe(2);
+
+  act(() => {
+    removedElement = result.current.remove();
+  });
+
+  expect(removedElement).toBe(2);
+  expect(result.current.queue).toEqual([3]);
+  expect(result.current.first).toBe(3);
+  expect(result.current.last).toBe(3);
+  expect(result.current.size).toBe(1);
+});
+
+it('Should clear the queue', () => {
+  const { result } = renderHook(() => useQueue([1, 2, 3]));
+
+  act(() => result.current.clear());
+
+  expect(result.current.queue).toEqual([]);
+  expect(result.current.first).toBeUndefined();
+  expect(result.current.last).toBeUndefined();
+  expect(result.current.size).toBe(0);
+});
+
+it('Should handle removing from an empty queue', () => {
+  const { result } = renderHook(() => useQueue());
+
+  let removedElement;
+
+  act(() => {
+    removedElement = result.current.remove();
+  });
+
+  expect(removedElement).toBeUndefined();
+  expect(result.current.queue).toEqual([]);
+  expect(result.current.first).toBeUndefined();
+  expect(result.current.last).toBeUndefined();
+  expect(result.current.size).toBe(0);
+});
+
+it('Should maintain correct state across multiple operations', () => {
+  const { result } = renderHook(() => useQueue());
+
+  act(() => {
+    result.current.add(1);
+    result.current.add(2);
+    result.current.add(3);
+    result.current.add(4);
+  });
+
+  expect(result.current.queue).toEqual([1, 2, 3, 4]);
+  expect(result.current.first).toBe(1);
+  expect(result.current.last).toBe(4);
+  expect(result.current.size).toBe(4);
+
+  let removedElementArray;
+
+  act(() => {
+    const removed1 = result.current.remove();
+    const removed2 = result.current.remove();
+    removedElementArray = [removed1, removed2];
+  });
+
+  expect(removedElementArray).toEqual([1, 2]);
+  expect(result.current.queue).toEqual([3, 4]);
+  expect(result.current.first).toBe(3);
+  expect(result.current.last).toBe(4);
+  expect(result.current.size).toBe(2);
+
+  act(() => result.current.clear());
+
+  expect(result.current.queue).toEqual([]);
+  expect(result.current.first).toBeUndefined();
+  expect(result.current.last).toBeUndefined();
+  expect(result.current.size).toBe(0);
+});