37 lines
1.3 KiB
JavaScript
37 lines
1.3 KiB
JavaScript
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"use strict";
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var assert = require("chai").assert
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, random = require("../../string/random");
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var isValidFormat = RegExp.prototype.test.bind(/^[a-z0-9]+$/);
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describe("string/random", function () {
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it("Should return string", function () { assert.equal(typeof random(), "string"); });
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it("Should return by default string of length 10", function () {
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assert.equal(random().length, 10);
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});
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it("Should support custom charset", function () {
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var charset = "abc";
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var result = random({ charset: charset });
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assert.equal(result.length, 10);
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for (var i = 0; i < result.length; ++i) {
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assert.isAtLeast(charset.indexOf(result.charAt(i)), 0);
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}
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});
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it("Should ensure unique string with `isUnique` option", function () {
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assert.notEqual(random({ isUnique: true }), random({ isUnique: true }));
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});
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it("Should contain only ascii chars", function () { assert(isValidFormat(random())); });
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it("Should support `length` option", function () {
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assert.equal(random({ length: 4 }).length, 4);
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assert.equal(random({ length: 100 }).length, 100);
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assert.equal(random({ length: 0 }).length, 0);
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});
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it("Should crash if unable to generate unique string with `isUnique` optin", function () {
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random({ length: 0, isUnique: true });
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assert["throws"](function () {
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random({ length: 0, isUnique: true });
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}, "Cannot generate random string");
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});
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});
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