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

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

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

test('Rifs should concat when allowed to', t => {
    const rSut = Rif
        .of([1,2,3])
        .concatIf(true)([4,5]);

    t.deepEqual(rSut, [1,2,3,4,5], `Since we allow the concatenation, we expect the result to be concatenated`);
});

test('Rifs should not concat when unallowed to', t => {
    const rSut = Rif
        .of([1,2,3])
        .concatIf(false)([4,5]);

    t.deepEqual(rSut, [1,2,3], `Since we forbid the concatenation, we expect the result to be left as is`);
});