Carl BenderandCarl Bender
c38ce2b5a2
Fix VisibilityTimer visibilitychange listener typo Co-authored-by: Carl Bender <mvpcarl@gmail.com>
47 lines
1.3 KiB
TypeScript
47 lines
1.3 KiB
TypeScript
// Copyright (c) 2026 The Brave Authors. All rights reserved.
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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import VisibilityTimer from './visibilityTimer'
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describe('VisibilityTimer', () => {
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function setVisibilityState(state: DocumentVisibilityState) {
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Object.defineProperty(document, 'visibilityState', {
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configurable: true,
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value: state,
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})
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}
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beforeEach(() => {
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jest.useFakeTimers()
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setVisibilityState('visible')
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})
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afterEach(() => {
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jest.useRealTimers()
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})
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it('does not fire while hidden and resumes after visible', () => {
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const onTimerExpired = jest.fn()
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const timer = new VisibilityTimer(onTimerExpired, 1000)
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timer.startTracking()
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setVisibilityState('hidden')
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document.dispatchEvent(new Event('visibilitychange'))
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jest.advanceTimersByTime(1500)
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expect(onTimerExpired).not.toHaveBeenCalled()
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setVisibilityState('visible')
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document.dispatchEvent(new Event('visibilitychange'))
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jest.advanceTimersByTime(999)
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expect(onTimerExpired).not.toHaveBeenCalled()
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jest.advanceTimersByTime(1)
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expect(onTimerExpired).toHaveBeenCalledTimes(1)
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timer.stopTracking()
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})
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})
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