зеркало из https://github.com/mozilla/gecko-dev.git
105 строки
4.0 KiB
JavaScript
105 строки
4.0 KiB
JavaScript
/* Any copyright is dedicated to the Public Domain.
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* http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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Components.utils.import("resource://gre/modules/PromiseUtils.jsm");
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Components.utils.import("resource://gre/modules/Timer.jsm");
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// Tests for PromiseUtils.jsm
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function run_test() {
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run_next_test();
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}
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///////////////////////////////////////////////////////////////////////////////////////
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// Tests for PromiseUtils.defer()
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///////////////////////////////////////////////////////////////////////////////////////
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/* Tests for checking the resolve method of the Deferred object
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* returned by PromiseUtils.defer() */
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add_task(function* test_resolve_string() {
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let def = PromiseUtils.defer();
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let expected = "The promise is resolved " + Math.random();
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def.resolve(expected);
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let result = yield def.promise;
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Assert.equal(result, expected, "def.resolve() resolves the promise");
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});
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/* Test for the case when undefined is passed to the resolve method
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* of the Deferred object */
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add_task(function* test_resolve_undefined() {
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let def = PromiseUtils.defer();
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def.resolve();
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let result = yield def.promise;
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Assert.equal(result, undefined, "resolve works with undefined as well");
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});
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/* Test when a pending promise is passed to the resolve method
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* of the Deferred object */
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add_task(function* test_resolve_pending_promise() {
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let def = PromiseUtils.defer();
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let expected = 100 + Math.random();
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let p = new Promise((resolve, reject) => {
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setTimeout(() => resolve(expected), 100);
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});
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def.resolve(p);
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let result = yield def.promise;
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Assert.equal(result, expected, "def.promise assumed the state of the passed promise");
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});
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/* Test when a resovled promise is passed
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* to the resolve method of the Deferred object */
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add_task(function* test_resolve_resolved_promise() {
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let def = PromiseUtils.defer();
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let expected = "Yeah resolved" + Math.random();
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let p = new Promise((resolve, reject) => resolve(expected));
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def.resolve(p);
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let result = yield def.promise;
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Assert.equal(result, expected, "Resolved promise is passed to the resolve method");
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});
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/* Test for the case when a rejected promise is
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* passed to the resolve method */
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add_task(function* test_resolve_rejected_promise() {
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let def = PromiseUtils.defer();
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let p = new Promise((resolve, reject) => reject(new Error("There its an rejection")));
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def.resolve(p);
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yield Assert.rejects(def.promise, /There its an rejection/, "Settled rejection promise passed to the resolve method");
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});
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/* Test for the checking the reject method of
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* the Deferred object returned by PromiseUtils.defer() */
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add_task(function* test_reject_Error() {
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let def = PromiseUtils.defer();
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def.reject(new Error("This one rejects"));
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yield Assert.rejects(def.promise, /This one rejects/, "reject method with Error for rejection");
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});
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/* Test for the case when a pending Promise is passed to
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* the reject method of Deferred object */
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add_task(function* test_reject_pending_promise() {
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let def = PromiseUtils.defer();
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let p = new Promise((resolve, reject) => {
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setTimeout(() => resolve(100), 100);
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});
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def.reject(p);
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yield Assert.rejects(def.promise, Promise, "Rejection with a pending promise uses the passed promise itself as the reason of rejection");
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});
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/* Test for the case when a resolved Promise
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* is passed to the reject method */
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add_task(function* test_reject_resolved_promise() {
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let def = PromiseUtils.defer();
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let p = new Promise((resolve, reject) => resolve("This resolved"));
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def.reject(p);
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yield Assert.rejects(def.promise, Promise, "Rejection with a resolved promise uses the passed promise itself as the reason of rejection");
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});
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/* Test for the case when a rejected Promise is
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* passed to the reject method */
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add_task(function* test_reject_resolved_promise() {
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let def = PromiseUtils.defer();
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let p = new Promise((resolve, reject) => reject(new Error("This on rejects")));
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def.reject(p);
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yield Assert.rejects(def.promise, Promise, "Rejection with a rejected promise uses the passed promise itself as the reason of rejection");
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}); |