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author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
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committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-07 19:33:14 +0000 |
commit | 36d22d82aa202bb199967e9512281e9a53db42c9 (patch) | |
tree | 105e8c98ddea1c1e4784a60a5a6410fa416be2de /toolkit/modules/tests/xpcshell/test_PromiseUtils.js | |
parent | Initial commit. (diff) | |
download | firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.tar.xz firefox-esr-36d22d82aa202bb199967e9512281e9a53db42c9.zip |
Adding upstream version 115.7.0esr.upstream/115.7.0esrupstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'toolkit/modules/tests/xpcshell/test_PromiseUtils.js')
-rw-r--r-- | toolkit/modules/tests/xpcshell/test_PromiseUtils.js | 141 |
1 files changed, 141 insertions, 0 deletions
diff --git a/toolkit/modules/tests/xpcshell/test_PromiseUtils.js b/toolkit/modules/tests/xpcshell/test_PromiseUtils.js new file mode 100644 index 0000000000..cc80248f00 --- /dev/null +++ b/toolkit/modules/tests/xpcshell/test_PromiseUtils.js @@ -0,0 +1,141 @@ +/* Any copyright is dedicated to the Public Domain. + * http://creativecommons.org/publicdomain/zero/1.0/ */ +/* eslint-disable mozilla/no-arbitrary-setTimeout */ + +"use strict"; + +const { PromiseUtils } = ChromeUtils.importESModule( + "resource://gre/modules/PromiseUtils.sys.mjs" +); +const { setTimeout } = ChromeUtils.importESModule( + "resource://gre/modules/Timer.sys.mjs" +); +const { PromiseTestUtils } = ChromeUtils.importESModule( + "resource://testing-common/PromiseTestUtils.sys.mjs" +); + +// Tests for PromiseUtils.sys.mjs + +// Tests for PromiseUtils.defer() + +/* Tests for checking the resolve method of the Deferred object + * returned by PromiseUtils.defer() */ +add_task(async function test_resolve_string() { + let def = PromiseUtils.defer(); + let expected = "The promise is resolved " + Math.random(); + def.resolve(expected); + let result = await def.promise; + Assert.equal(result, expected, "def.resolve() resolves the promise"); +}); + +/* Test for the case when undefined is passed to the resolve method + * of the Deferred object */ +add_task(async function test_resolve_undefined() { + let def = PromiseUtils.defer(); + def.resolve(); + let result = await def.promise; + Assert.equal(result, undefined, "resolve works with undefined as well"); +}); + +/* Test when a pending promise is passed to the resolve method + * of the Deferred object */ +add_task(async function test_resolve_pending_promise() { + let def = PromiseUtils.defer(); + let expected = 100 + Math.random(); + let p = new Promise((resolve, reject) => { + setTimeout(() => resolve(expected), 100); + }); + def.resolve(p); + let result = await def.promise; + Assert.equal( + result, + expected, + "def.promise assumed the state of the passed promise" + ); +}); + +/* Test when a resovled promise is passed + * to the resolve method of the Deferred object */ +add_task(async function test_resolve_resolved_promise() { + let def = PromiseUtils.defer(); + let expected = "Yeah resolved" + Math.random(); + let p = new Promise((resolve, reject) => resolve(expected)); + def.resolve(p); + let result = await def.promise; + Assert.equal( + result, + expected, + "Resolved promise is passed to the resolve method" + ); +}); + +/* Test for the case when a rejected promise is + * passed to the resolve method */ +add_task(async function test_resolve_rejected_promise() { + let def = PromiseUtils.defer(); + let p = new Promise((resolve, reject) => + reject(new Error("There its an rejection")) + ); + def.resolve(p); + await Assert.rejects( + def.promise, + /There its an rejection/, + "Settled rejection promise passed to the resolve method" + ); +}); + +/* Test for the checking the reject method of + * the Deferred object returned by PromiseUtils.defer() */ +add_task(async function test_reject_Error() { + let def = PromiseUtils.defer(); + def.reject(new Error("This one rejects")); + await Assert.rejects( + def.promise, + /This one rejects/, + "reject method with Error for rejection" + ); +}); + +/* Test for the case when a pending Promise is passed to + * the reject method of Deferred object */ +add_task(async function test_reject_pending_promise() { + let def = PromiseUtils.defer(); + let p = new Promise((resolve, reject) => { + setTimeout(() => resolve(100), 100); + }); + def.reject(p); + await Assert.rejects( + def.promise, + Promise, + "Rejection with a pending promise uses the passed promise itself as the reason of rejection" + ); +}); + +/* Test for the case when a resolved Promise + * is passed to the reject method */ +add_task(async function test_reject_resolved_promise() { + let def = PromiseUtils.defer(); + let p = new Promise((resolve, reject) => resolve("This resolved")); + def.reject(p); + await Assert.rejects( + def.promise, + Promise, + "Rejection with a resolved promise uses the passed promise itself as the reason of rejection" + ); +}); + +/* Test for the case when a rejected Promise is + * passed to the reject method */ +add_task(async function test_reject_resolved_promise() { + PromiseTestUtils.expectUncaughtRejection(/This one rejects/); + let def = PromiseUtils.defer(); + let p = new Promise((resolve, reject) => + reject(new Error("This one rejects")) + ); + def.reject(p); + await Assert.rejects( + def.promise, + Promise, + "Rejection with a rejected promise uses the passed promise itself as the reason of rejection" + ); +}); |