58 lines
2.4 KiB
Plaintext
58 lines
2.4 KiB
Plaintext
"use strict";
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var assert = require("chai").assert
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, isIterable = require("../../iterable/is");
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describe("iterable/is", function () {
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it("Should return true on array", function () { assert.equal(isIterable([]), true); });
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it("Should return true on arguments", function () {
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assert.equal(isIterable((function () { return arguments; })()), true);
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});
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it("Should by default return false on string", function () {
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assert.equal(isIterable("foo"), false);
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});
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it("Should accept strings if specified", function () {
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assert.equal(isIterable("foo", { allowString: true }), true);
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});
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it("Should support denyEmpty option", function () {
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assert.equal(isIterable([], { denyEmpty: true }), false);
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assert.equal(isIterable([null], { denyEmpty: true }), true);
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assert.equal(isIterable("", { allowString: true, denyEmpty: true }), false);
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assert.equal(isIterable("foo", { allowString: true, denyEmpty: true }), true);
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});
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if (typeof Set === "function") {
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it("Should return true on set", function () { assert.equal(isIterable(new Set()), true); });
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}
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if (typeof Map === "function") {
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it("Should return true on set", function () { assert.equal(isIterable(new Map()), true); });
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}
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it("Should return false on plain object", function () { assert.equal(isIterable({}), false); });
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it("Should return false on function", function () {
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assert.equal(isIterable(function () { return true; }), false);
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});
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if (typeof Object.create === "function") {
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it("Should return false on object with no prototype", function () {
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assert.equal(isIterable(Object.create(null)), false);
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});
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}
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it("Should return false on string", function () { assert.equal(isIterable("foo"), false); });
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it("Should return false on empty string", function () { assert.equal(isIterable(""), false); });
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it("Should return false on number", function () { assert.equal(isIterable(123), false); });
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it("Should return false on NaN", function () { assert.equal(isIterable(NaN), false); });
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it("Should return false on boolean", function () { assert.equal(isIterable(true), false); });
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if (typeof Symbol === "function") {
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it("Should return false on symbol", function () {
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assert.equal(isIterable(Symbol("foo")), false);
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});
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}
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it("Should return false on null", function () { assert.equal(isIterable(null), false); });
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it("Should return false on undefined", function () {
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assert.equal(isIterable(void 0), false);
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});
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});
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