89 lines
2.5 KiB
TypeScript
89 lines
2.5 KiB
TypeScript
import { describe, it, expect, vi, beforeEach, beforeAll, afterAll, afterEach } from 'vitest';
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import { __setMocked, persistentWritable } from './persistentStore';
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import { get } from 'svelte/store';
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describe('persistentWritable', () => {
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let _storage: Record<string, string> = {};
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const storageMock = {
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setItem: vi.fn(),
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getItem: vi.fn()
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};
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beforeEach(() => {
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vi.resetAllMocks();
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vi.stubGlobal('localStorage', storageMock);
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_storage = {};
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storageMock.setItem.mockImplementation((key: string, value: string) => {
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_storage[key] = value;
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});
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storageMock.getItem.mockImplementation((key: string) => {
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const res = _storage[key];
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if (res) {
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return res;
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}
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return null;
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});
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});
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describe('in browser', () => {
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beforeAll(() => {
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__setMocked(true);
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});
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afterAll(() => {
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__setMocked(false);
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});
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it('should not create multiple stores', () => {
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const firstStore = persistentWritable<number>('browser-multiple', 0);
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const secondStore = persistentWritable<number>('browser-multiple', 1);
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expect(firstStore).toStrictEqual(secondStore);
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expect(get(secondStore)).toEqual(0);
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expect(storageMock.getItem).toHaveBeenCalledOnce();
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expect(storageMock.getItem.mock.calls[0]).toEqual(['browser-multiple']);
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expect(storageMock.setItem).toHaveBeenCalledTimes(0);
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});
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it('should update localStorage', () => {
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const store = persistentWritable<string>('browser-update', 'foo');
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expect(storageMock.getItem).toHaveBeenCalledOnce();
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store.set('bar');
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expect(storageMock.setItem.mock.calls[0]).toEqual(['browser-update', '"bar"']);
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expect(_storage['browser-update']).toEqual('"bar"');
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});
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it('should initialize from localStorage', () => {
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_storage['browser-existing'] = '"bar"';
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const store = persistentWritable<string>('browser-existing', 'foo');
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expect(get(store)).toEqual('bar');
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});
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});
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describe('in server', () => {
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beforeAll(() => {
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__setMocked(false);
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});
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afterEach(() => {
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expect(storageMock.setItem).toHaveBeenCalledTimes(0);
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expect(storageMock.getItem).toHaveBeenCalledTimes(0);
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});
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it('should not create multiple stores', () => {
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const firstStore = persistentWritable<number>('server-multiple', 0);
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const secondStore = persistentWritable<number>('server-multiple', 0);
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expect(firstStore).toStrictEqual(secondStore);
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expect(get(secondStore)).toEqual(0);
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});
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it('should not update localStorage', () => {
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const store = persistentWritable<string>('server-update', 'foo');
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store.set('foobar');
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expect(get(store)).toEqual('foobar');
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});
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});
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});
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