Immutable.js examples with Map and List, fromJS, getIn, and get

I stumbled across Immutable.js in the code base today.  Here's a run down of how to set up an Immutable map/list, create a Immutable map/list using Immutable.fromJS() and how to use the getIn/get functions.

Environment:
immutable 3.8.2
assert 1.4.1
jest 20.0.3

describe('Immutable Map / List and fromJS Examples', function() {
  it('Immutable Map / List Example', function() {

    const immutableObj = Immutable.Map({
      property1: 'property1',
      property2: Immutable.List(['Cherry']),
      property3: 'property3',
      propertyMap: Immutable.Map({
        propertyMapProperty: 'Shoe',
      }),
    });
    let result = immutableObj.getIn(['propertyMap', 'propertyMapProperty'])
    let expectedResult = "Shoe";

    assert.equal(expectedResult, result);

    let immutableList = immutableObj.get('property2');
    result = immutableList.get(0);
    expectedResult = "Cherry";
    assert.equal(expectedResult, result);
  });

  it('Immutable fromJS Example', function() {

    const immutableObj = Immutable.fromJS({
      property1: 'property1',
      property2: ['Cherry'],
      property3: 'property3',
      propertyMap: {propertyMapProperty: "Shoe"},
    });

    let result = immutableObj.getIn(['propertyMap', 'propertyMapProperty'])
    let expectedResult = "Shoe";

    assert.equal(expectedResult, result);

    let immutableList = immutableObj.get('property2');
    result = immutableList.get(0);
    expectedResult = "Cherry";
    assert.equal(expectedResult, result);
  });
});

This article helped a lot.