From e2daf7f81789c54b23ade72bd164492e7304d375 Mon Sep 17 00:00:00 2001
From: Armand Philippot <git@armandphilippot.com>
Date: Thu, 2 Nov 2023 15:33:29 +0100
Subject: feat(hooks): add an useTimeout hook

---
 src/utils/hooks/use-timeout/use-timeout.test.ts | 50 +++++++++++++++++++++++++
 1 file changed, 50 insertions(+)
 create mode 100644 src/utils/hooks/use-timeout/use-timeout.test.ts

(limited to 'src/utils/hooks/use-timeout/use-timeout.test.ts')

diff --git a/src/utils/hooks/use-timeout/use-timeout.test.ts b/src/utils/hooks/use-timeout/use-timeout.test.ts
new file mode 100644
index 0000000..296b320
--- /dev/null
+++ b/src/utils/hooks/use-timeout/use-timeout.test.ts
@@ -0,0 +1,50 @@
+import {
+  afterEach,
+  beforeEach,
+  describe,
+  expect,
+  it,
+  jest,
+} from '@jest/globals';
+import { renderHook } from '@testing-library/react';
+import { useTimeout } from './use-timeout';
+
+describe('useTimeout', () => {
+  beforeEach(() => {
+    jest.useFakeTimers();
+  });
+
+  afterEach(() => {
+    jest.runOnlyPendingTimers();
+    jest.useRealTimers();
+  });
+
+  it('executes the given callback with default delay', () => {
+    // When less than 1ms, setTimeout use 1. Default delay is 0ms.
+    const defaultTimeoutDelay = 1;
+    const callback = jest.fn();
+    renderHook(() => useTimeout(callback));
+
+    expect(callback).not.toHaveBeenCalled();
+
+    jest.advanceTimersByTime(defaultTimeoutDelay);
+
+    expect(callback).toHaveBeenCalledTimes(1);
+  });
+
+  it('executes the given callback with custom delay', () => {
+    const customDelay = 1500;
+    const callback = jest.fn();
+    renderHook(() => useTimeout(callback, customDelay));
+
+    expect(callback).not.toHaveBeenCalled();
+
+    jest.advanceTimersByTime(1);
+
+    expect(callback).not.toHaveBeenCalled();
+
+    jest.advanceTimersByTime(customDelay);
+
+    expect(callback).toHaveBeenCalledTimes(1);
+  });
+});
-- 
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