ng2-pipes/src/app/pipes/object/values.spec.ts

Useful angular2 pipes

import {ValuesPipe} from './values';

describe('Values Pipe', () => {
  let pipe: ValuesPipe;

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

  it('should keep the element the same way if its not an object', () => {
    expect(pipe.transform([1, 2, 3])).toEqual([1, 2, 3]);
    expect(pipe.transform([])).toEqual([]);
    expect(pipe.transform('foo')).toEqual('foo');
    expect(pipe.transform(null)).toEqual(null);
    expect(pipe.transform(undefined)).toEqual(undefined);
  });

  it('should return array of values', () => {
    expect(pipe.transform({})).toEqual([]);
    expect(pipe.transform({foo: 'bar'})).toEqual(['bar']);
    expect(pipe.transform({foo: 1, bar: 42})).toEqual([1, 42]);
  });
});