ng2-pipes/src/app/pipes/string/trim.spec.ts

Useful angular2 pipes

import {TrimPipe} from "./trim";

describe('TrimPipe Tests', () => {
  let pipe:TrimPipe;

  beforeEach(() => {
    pipe = new TrimPipe();
  });

  it('Should trim whitespace from string', () => {
    let result = pipe.transform('   foo bar   ');
    expect(result).toEqual('foo bar');
  });

  it('Should trim other characters from string', () => {
    let result = pipe.transform('42foo bar4242', ['42']);
    expect(result).toEqual('foo bar');
  });
});