Flatten-test.js

import expect from 'expect';
import { flatten, unflatten } from 'src/flatten';

describe('Flatten', () => {
  it('flattens an object, prefixed by original keys', () => {
    const input = {
      foo: {
        bar: 'baz',
        qux: 'zip',
      },
      bar: {
        bar: 'baz',
        qux: 'zip',
      },
    };

    const expected = {
      foo_bar: 'baz',
      foo_qux: 'zip',
      bar_bar: 'baz',
      bar_qux: 'zip',
    };

    expect(flatten(input)).toEqual(expected);
  });
});

describe('Unflatten', () => {
  it('Unflattens an object, prefixed by original keys', () => {
    const input = {
      foo_bar: 'baz',
      foo_qux: 'zip',
      bar_bar: 'baz',
      bar_qux: 'zip',
    };

    const expected = {
      foo: {
        bar: 'baz',
        qux: 'zip',
      },
      bar: {
        bar: 'baz',
        qux: 'zip',
      },
    };

    expect(unflatten(input)).toEqual(expected);
  });
});