go-types/test/isBlankTest.js

Type-checking utilities for JavaScript

"use strict";

var assert = require("chai").assert;
var isBlank = require("../src/isBlank");

suite("#isBlank", function () {

    test("blank", function () {
        assert.equal(isBlank(), true);
        assert.equal(isBlank(undefined), true);
        assert.equal(isBlank(null), true);
        assert.equal(isBlank(""), true);
        assert.equal(isBlank(" "), true);
        assert.equal(isBlank(" \t\n "), true);
        assert.equal(isBlank([]), true);
        assert.equal(isBlank({}), true);
        assert.equal(isBlank([undefined, null]), true);
        assert.equal(isBlank({a: undefined, b: null}), true);
        assert.equal(isBlank(new Set([undefined, null])), true);
    });

    test("not blank", function () {
        assert.equal(isBlank(0), false);
        assert.equal(isBlank(NaN), false);
        assert.equal(isBlank("a"), false);
        assert.equal(isBlank(" a "), false);
        assert.equal(isBlank([""]), false);
        assert.equal(isBlank([0]), false);
        assert.equal(isBlank({a: ""}), false);
        assert.equal(isBlank({a: 0}), false);
        assert.equal(isBlank(new Set([0])), false);
    });
});