chardet/src/index.test.ts

62 lines
2.1 KiB
TypeScript
Raw Normal View History

import * as chardet from '.';
import defaultChardet from '.';
import fs from 'fs';
describe('chardet', () => {
const path = __dirname + '/test/data/encodings/utf8';
const expectedEncodingsFromPath = [
{ 'confidence': 100, 'name': 'UTF-8', 'lang': undefined },
{ 'confidence': 32, 'name': 'windows-1252', 'lang': 'fr' },
{ 'confidence': 19, 'name': 'KOI8-R', 'lang': undefined },
{ 'confidence': 10, 'name': 'Big5', 'lang': undefined },
{ 'confidence': 10, 'name': 'GB18030', 'lang': undefined },
{ 'confidence': 10, 'name': 'windows-1253', 'lang': undefined },
{ 'confidence': 6, 'name': 'windows-1250', 'lang': 'pl' },
{ 'confidence': 4, 'name': 'windows-1254', 'lang': undefined },
{ 'confidence': 2, 'name': 'windows-1251', 'lang': undefined },
];
it('has both named and default exports', () => {
expect(defaultChardet.analyse).toBe(chardet.analyse);
expect(defaultChardet.detect).toBe(chardet.detect);
expect(defaultChardet.detectFile).toBe(chardet.detectFile);
expect(defaultChardet.detectFileSync).toBe(chardet.detectFileSync);
});
describe('#detect', () => {
it('should detect encoding', () => {
expect(chardet.detect(fs.readFileSync(path))).toBe('UTF-8');
});
});
describe('#detectFile', () => {
it('should detect encoding', async () => {
const res = await chardet.detectFile(path);
expect(res).toBe('UTF-8');
});
it('should detect encoding with smaller sample size', async () => {
const res = await chardet.detectFile(path, { sampleSize: 32 });
expect(res).toBe('UTF-8');
});
});
describe('#detectFileSync', () => {
it('should detect encoding', () => {
expect(chardet.detectFileSync(path)).toBe('UTF-8');
});
it('should detect encoding with smaller sample size', () => {
expect(chardet.detectFileSync(path, { sampleSize: 32 })).toBe('UTF-8');
});
});
describe('#analyse', () => {
it('should return a list of encodings, sorted by confidence level in decending order', () => {
const matches = chardet.analyse(fs.readFileSync(path));
expect(matches).toEqual(expectedEncodingsFromPath);
});
});
});