mirror of
https://github.com/n8n-io/n8n.git
synced 2024-12-26 21:19:43 -08:00
293 lines
7.8 KiB
TypeScript
293 lines
7.8 KiB
TypeScript
import { ALPHABET } from '@/Constants';
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import { ApplicationError } from '@/errors/application.error';
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import {
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jsonParse,
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jsonStringify,
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deepCopy,
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isObjectEmpty,
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fileTypeFromMimeType,
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randomInt,
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randomString,
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} from '@/utils';
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describe('isObjectEmpty', () => {
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it('should handle null and undefined', () => {
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expect(isObjectEmpty(null)).toEqual(true);
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expect(isObjectEmpty(undefined)).toEqual(true);
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});
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it('should handle arrays', () => {
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expect(isObjectEmpty([])).toEqual(true);
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expect(isObjectEmpty([1, 2, 3])).toEqual(false);
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});
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it('should handle Set and Map', () => {
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expect(isObjectEmpty(new Set())).toEqual(true);
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expect(isObjectEmpty(new Set([1, 2, 3]))).toEqual(false);
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expect(isObjectEmpty(new Map())).toEqual(true);
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expect(
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isObjectEmpty(
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new Map([
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['a', 1],
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['b', 2],
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]),
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),
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).toEqual(false);
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});
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it('should handle Buffer, ArrayBuffer, and Uint8Array', () => {
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expect(isObjectEmpty(Buffer.from(''))).toEqual(true);
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expect(isObjectEmpty(Buffer.from('abcd'))).toEqual(false);
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expect(isObjectEmpty(Uint8Array.from([]))).toEqual(true);
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expect(isObjectEmpty(Uint8Array.from([1, 2, 3]))).toEqual(false);
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expect(isObjectEmpty(new ArrayBuffer(0))).toEqual(true);
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expect(isObjectEmpty(new ArrayBuffer(1))).toEqual(false);
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});
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it('should handle plain objects', () => {
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expect(isObjectEmpty({})).toEqual(true);
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expect(isObjectEmpty({ a: 1, b: 2 })).toEqual(false);
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});
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it('should handle instantiated classes', () => {
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expect(isObjectEmpty(new (class Test {})())).toEqual(true);
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expect(
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isObjectEmpty(
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new (class Test {
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prop = 123;
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})(),
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),
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).toEqual(false);
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});
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it('should not call Object.keys unless a plain object', () => {
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const keySpy = jest.spyOn(Object, 'keys');
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const { calls } = keySpy.mock;
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const assertCalls = (count: number) => {
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if (calls.length !== count) {
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throw new ApplicationError('`Object.keys()` was called an unexpected number of times', {
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extra: { times: calls.length },
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});
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}
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};
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assertCalls(0);
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isObjectEmpty(null);
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assertCalls(0);
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isObjectEmpty([1, 2, 3]);
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assertCalls(0);
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isObjectEmpty(Buffer.from('123'));
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assertCalls(0);
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isObjectEmpty({});
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assertCalls(1);
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});
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});
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describe('jsonParse', () => {
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it('parses JSON', () => {
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expect(jsonParse('[1, 2, 3]')).toEqual([1, 2, 3]);
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expect(jsonParse('{ "a": 1 }')).toEqual({ a: 1 });
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});
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it('optionally throws `errorMessage', () => {
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expect(() => {
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jsonParse('', { errorMessage: 'Invalid JSON' });
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}).toThrow('Invalid JSON');
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});
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it('optionally returns a `fallbackValue`', () => {
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expect(jsonParse('', { fallbackValue: { foo: 'bar' } })).toEqual({ foo: 'bar' });
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});
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});
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describe('jsonStringify', () => {
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const source: any = { a: 1, b: 2, d: new Date(1680089084200), r: new RegExp('^test$', 'ig') };
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source.c = source;
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it('should throw errors on circular references by default', () => {
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expect(() => jsonStringify(source)).toThrow('Converting circular structure to JSON');
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});
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it('should break circular references when requested', () => {
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expect(jsonStringify(source, { replaceCircularRefs: true })).toEqual(
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'{"a":1,"b":2,"d":"2023-03-29T11:24:44.200Z","r":{},"c":"[Circular Reference]"}',
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);
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});
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it('should not detect duplicates as circular references', () => {
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const y = { z: 5 };
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const x = [y, y, { y }];
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expect(jsonStringify(x, { replaceCircularRefs: true })).toEqual(
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'[{"z":5},{"z":5},{"y":{"z":5}}]',
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);
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});
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});
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describe('deepCopy', () => {
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it('should deep copy an object', () => {
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const serializable = {
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x: 1,
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y: 2,
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toJSON: () => 'x:1,y:2',
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};
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const object = {
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deep: {
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props: {
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list: [{ a: 1 }, { b: 2 }, { c: 3 }],
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},
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arr: [1, 2, 3],
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},
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serializable,
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arr: [
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{
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prop: {
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list: ['a', 'b', 'c'],
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},
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},
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],
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func: () => {},
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date: new Date(1667389172201),
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undef: undefined,
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nil: null,
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bool: true,
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num: 1,
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};
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const copy = deepCopy(object);
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expect(copy).not.toBe(object);
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expect(copy.arr).toEqual(object.arr);
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expect(copy.arr).not.toBe(object.arr);
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expect(copy.date).toBe('2022-11-02T11:39:32.201Z');
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expect(copy.serializable).toBe(serializable.toJSON());
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expect(copy.deep.props).toEqual(object.deep.props);
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expect(copy.deep.props).not.toBe(object.deep.props);
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});
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it('should avoid max call stack in case of circular deps', () => {
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const object: Record<string, any> = {
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deep: {
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props: {
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list: [{ a: 1 }, { b: 2 }, { c: 3 }],
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},
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arr: [1, 2, 3],
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},
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arr: [
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{
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prop: {
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list: ['a', 'b', 'c'],
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},
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},
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],
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func: () => {},
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date: new Date(1667389172201),
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undef: undefined,
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nil: null,
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bool: true,
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num: 1,
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};
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object.circular = object;
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object.deep.props.circular = object;
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object.deep.arr.push(object);
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const copy = deepCopy(object);
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expect(copy).not.toBe(object);
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expect(copy.arr).toEqual(object.arr);
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expect(copy.arr).not.toBe(object.arr);
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expect(copy.date).toBe('2022-11-02T11:39:32.201Z');
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expect(copy.deep.props.circular).toBe(copy);
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expect(copy.deep.props.circular).not.toBe(object);
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expect(copy.deep.arr.slice(-1)[0]).toBe(copy);
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expect(copy.deep.arr.slice(-1)[0]).not.toBe(object);
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});
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});
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describe('fileTypeFromMimeType', () => {
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it('should recognize json', () => {
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expect(fileTypeFromMimeType('application/json')).toEqual('json');
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});
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it('should recognize html', () => {
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expect(fileTypeFromMimeType('text/html')).toEqual('html');
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});
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it('should recognize image', () => {
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expect(fileTypeFromMimeType('image/jpeg')).toEqual('image');
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expect(fileTypeFromMimeType('image/png')).toEqual('image');
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expect(fileTypeFromMimeType('image/avif')).toEqual('image');
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expect(fileTypeFromMimeType('image/webp')).toEqual('image');
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});
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it('should recognize audio', () => {
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expect(fileTypeFromMimeType('audio/wav')).toEqual('audio');
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expect(fileTypeFromMimeType('audio/webm')).toEqual('audio');
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expect(fileTypeFromMimeType('audio/ogg')).toEqual('audio');
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expect(fileTypeFromMimeType('audio/mp3')).toEqual('audio');
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});
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it('should recognize video', () => {
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expect(fileTypeFromMimeType('video/mp4')).toEqual('video');
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expect(fileTypeFromMimeType('video/webm')).toEqual('video');
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expect(fileTypeFromMimeType('video/ogg')).toEqual('video');
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});
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it('should recognize text', () => {
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expect(fileTypeFromMimeType('text/plain')).toEqual('text');
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expect(fileTypeFromMimeType('text/css')).toEqual('text');
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expect(fileTypeFromMimeType('text/html')).not.toEqual('text');
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expect(fileTypeFromMimeType('text/javascript')).toEqual('text');
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expect(fileTypeFromMimeType('application/javascript')).toEqual('text');
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});
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it('should recognize pdf', () => {
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expect(fileTypeFromMimeType('application/pdf')).toEqual('pdf');
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});
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});
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const repeat = (fn: () => void, times = 10) => Array(times).fill(0).forEach(fn);
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describe('randomInt', () => {
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it('should generate random integers', () => {
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repeat(() => {
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const result = randomInt(10);
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expect(result).toBeLessThanOrEqual(10);
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expect(result).toBeGreaterThanOrEqual(0);
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});
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});
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it('should generate random in range', () => {
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repeat(() => {
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const result = randomInt(10, 100);
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expect(result).toBeLessThanOrEqual(100);
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expect(result).toBeGreaterThanOrEqual(10);
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});
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});
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});
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describe('randomString', () => {
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it('should return a random string of the specified length', () => {
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repeat(() => {
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const result = randomString(42);
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expect(result).toHaveLength(42);
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});
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});
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it('should return a random string of the in the length range', () => {
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repeat(() => {
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const result = randomString(10, 100);
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expect(result.length).toBeGreaterThanOrEqual(10);
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expect(result.length).toBeLessThanOrEqual(100);
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});
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});
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it('should only contain characters from the specified character set', () => {
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repeat(() => {
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const result = randomString(1000);
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result.split('').every((char) => ALPHABET.includes(char));
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});
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});
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});
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