@technobuddha/library/src/unescape-java.test.ts

A large library of useful functions

import { unescapeJava } from './unescape-java.ts';
import { space } from './unicode.ts';

describe('unescapeJava', () => {
  test('should unescape standard sequences', () => {
    expect(unescapeJava('\\b\\f\\n\\r\\t\\\\\\\'\\"')).toBe('\b\f\n\r\t\\\'"');
  });

  test('should support non-standard sequences', () => {
    expect(unescapeJava('\\j\\q\\z')).toBe('\\j\\q\\z');
  });

  test('should unescape octal', () => {
    expect(unescapeJava('\\0')).toBe('\0');
    expect(unescapeJava('\\00')).toBe('\0');
    expect(unescapeJava('\\000')).toBe('\0');
    expect(unescapeJava('\\0000')).toBe('\u00000');
  });

  test('should unescape unicode', () => {
    expect(unescapeJava('\\u0000')).toBe('\0');
    expect(unescapeJava('\\u00000')).toBe('\u00000');
    expect(unescapeJava('\\u0000X')).toBe('\0X');
  });

  test('should return ASCII, Latin1, BMP and ASTRAL as-is', () => {
    expect(unescapeJava(space)).toBe(space);
    expect(unescapeJava('ABCabc[~]')).toBe('ABCabc[~]');
    expect(unescapeJava('abcdef')).toBe('abcdef');
    expect(unescapeJava('¡¢£ýþÿ')).toBe('¡¢£ýþÿ');
    //cspell:ignore ΑΒΓΔΕΖ
    expect(unescapeJava('ΑΒΓΔΕΖ')).toBe('ΑΒΓΔΕΖ');
    expect(unescapeJava('😀😁😂😺😸😹')).toBe('😀😁😂😺😸😹');
  });
});