File size: 4,568 Bytes
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* @license
* Copyright 2025 Google LLC
* SPDX-License-Identifier: Apache-2.0
*/
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest';
import {
ActivityDetector,
getActivityDetector,
recordUserActivity,
isUserActive,
} from './activity-detector.js';
describe('ActivityDetector', () => {
let detector: ActivityDetector;
beforeEach(() => {
detector = new ActivityDetector(1000); // 1 second idle threshold for testing
});
describe('constructor', () => {
it('should initialize with default idle threshold', () => {
const defaultDetector = new ActivityDetector();
expect(defaultDetector).toBeInstanceOf(ActivityDetector);
});
it('should initialize with custom idle threshold', () => {
const customDetector = new ActivityDetector(5000);
expect(customDetector).toBeInstanceOf(ActivityDetector);
});
});
describe('recordActivity', () => {
beforeEach(() => {
vi.useFakeTimers();
});
afterEach(() => {
vi.useRealTimers();
});
it('should update last activity time', () => {
const beforeTime = detector.getLastActivityTime();
vi.advanceTimersByTime(100);
detector.recordActivity();
const afterTime = detector.getLastActivityTime();
expect(afterTime).toBeGreaterThan(beforeTime);
});
});
describe('isUserActive', () => {
beforeEach(() => {
vi.useFakeTimers();
});
afterEach(() => {
vi.useRealTimers();
});
it('should return true immediately after construction', () => {
expect(detector.isUserActive()).toBe(true);
});
it('should return true within idle threshold', () => {
detector.recordActivity();
expect(detector.isUserActive()).toBe(true);
});
it('should return false after idle threshold', () => {
// Advance time beyond idle threshold
vi.advanceTimersByTime(2000); // 2 seconds, threshold is 1 second
expect(detector.isUserActive()).toBe(false);
});
it('should return true again after recording new activity', () => {
// Go idle
vi.advanceTimersByTime(2000);
expect(detector.isUserActive()).toBe(false);
// Record new activity
detector.recordActivity();
expect(detector.isUserActive()).toBe(true);
});
});
describe('getTimeSinceLastActivity', () => {
beforeEach(() => {
vi.useFakeTimers();
});
afterEach(() => {
vi.useRealTimers();
});
it('should return time elapsed since last activity', () => {
detector.recordActivity();
vi.advanceTimersByTime(500);
const timeSince = detector.getTimeSinceLastActivity();
expect(timeSince).toBe(500);
});
});
describe('getLastActivityTime', () => {
it('should return the timestamp of last activity', () => {
const before = Date.now();
detector.recordActivity();
const activityTime = detector.getLastActivityTime();
const after = Date.now();
expect(activityTime).toBeGreaterThanOrEqual(before);
expect(activityTime).toBeLessThanOrEqual(after);
});
});
});
describe('Global Activity Detector Functions', () => {
describe('global instance', () => {
it('should expose a global ActivityDetector via getActivityDetector', () => {
const detector = getActivityDetector();
expect(detector).toBeInstanceOf(ActivityDetector);
});
});
describe('getActivityDetector', () => {
it('should always return the global instance', () => {
const detector = getActivityDetector();
const detectorAgain = getActivityDetector();
expect(detectorAgain).toBe(detector);
});
});
describe('recordUserActivity', () => {
beforeEach(() => {
vi.useFakeTimers();
});
afterEach(() => {
vi.useRealTimers();
});
it('should record activity on existing detector', () => {
const detector = getActivityDetector();
const beforeTime = detector.getLastActivityTime();
vi.advanceTimersByTime(100);
recordUserActivity();
const afterTime = detector.getLastActivityTime();
expect(afterTime).toBeGreaterThan(beforeTime);
});
});
describe('isUserActive', () => {
beforeEach(() => {
vi.useFakeTimers();
});
afterEach(() => {
vi.useRealTimers();
});
it('should reflect global detector state', () => {
expect(isUserActive()).toBe(true);
// Default idle threshold is 30s; advance beyond it
vi.advanceTimersByTime(31000);
expect(isUserActive()).toBe(false);
});
});
});
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