metamask-extension/shared/modules/string-utils.test.js

import { isEqualCaseInsensitive, prependZero } from './string-utils';

describe('string-utils', () => {
  describe('isEqualCaseInsensitive', () => {
    it('should return true for FOO and foo', () => {
      expect(isEqualCaseInsensitive('FOO', 'foo')).toBeTruthy();
    });

    it('should return false for foo and Bar', () => {
      expect(isEqualCaseInsensitive('foo', 'Bar')).toBeFalsy();
    });

    it('should return false for number and string comparision', () => {
      expect(isEqualCaseInsensitive('foo', 123)).toBeFalsy();
    });
  });

  describe('prependZero', () => {
    it('should return number to given max length string when digit is smaller than maxLength', () => {
      expect(prependZero(123, 4)).toStrictEqual('0123');
    });

    it('should return number to given max length string when digit is large than maxLength', () => {
      expect(prependZero(123, 2)).toStrictEqual('123');
    });
  });
});