Tests for transducer protocol support for Immutable.js

ImmutableTransducerTest.js

/*global describe, it */
let {expect} = require('chai');
let {Map, List, Set, Stack} = require('immutable');
let t2 = require('transduce');

describe('Immutable Transducer support', ()=> {
    it('List supports transducer protocols', () => {
        let val = t2.into(List(), t2.filter(()=>true), ['a', 'b', 'c']).toJS();
        expect(val).to.deep.equal(['a', 'b', 'c']);
    });
    it('Set support transducer protocols', () => {
        let val = t2.into(Set(), t2.filter(()=>true), ['a', 'b', 'c', 'b']).toJS();
        expect(val).to.deep.equal(['a', 'b', 'c']);
    });
    it('Map support transducer protocols', () => {
        let val = t2.into(Map(), t2.filter(()=>true), {'a':1, 'b':2, 'c':3}).toJS();
        expect(val).to.deep.equal({'a':1, 'b':2, 'c':3});
    });
    it('Stack support transducer protocols', () => {
        let val = t2.into(Stack(), t2.filter(()=>true), ['a', 'b', 'c']).toJS();
        expect(val).to.deep.equal(['c', 'b', 'a']);
    });
});