@guj/rif-js/src/test/rifBase.js

Simplify filter,map and such when their use should be conditionnal

const test = require("ava");
const Rif = require("../main/rif");

test('Rif should be considered arrays', t => {
    const rSut = Rif.of([1]);
    t.deepEqual(rSut, [1], `The first element of this Rif is 1`);
});

test('Rif methods should return Rifs to be chainable', t => {
    const rSut = Rif
        .of([1])
        .mapIf(true)(x=>x+1)
        .mapIf(true)(x=>x*2);
    t.deepEqual(rSut, [4], `The first element has been mapped twice`);
});

test('Muted Rif methods should return Rifs to be chainable', t => {
    const rSut = Rif
        .of([1])
        .mapIf(false)(x=>x+1)
        .mapIf(false)(x=>x*2);
    t.deepEqual(rSut, [1], `The first element has not been mapped at all`);
});

test('Array methods called on a Rif should return Rifs to be chainable', t => {
    const rSut = Rif
        .of([1])
        .map(x=>x+1)
        .mapIf(true)(x=>x*2);

    t.deepEqual(rSut, [4], `The first element has been mapped twice`);
});