forked from mirrors/gecko-dev
77 lines
2.2 KiB
JavaScript
77 lines
2.2 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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// Test that top-level await expressions work as expected.
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"use strict";
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const TEST_URI =
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"data:text/html;charset=utf-8,<!DOCTYPE html>Web Console test top-level await bindings";
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add_task(async function () {
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// Enable await mapping.
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await pushPref("devtools.debugger.features.map-await-expression", true);
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const hud = await openNewTabAndConsole(TEST_URI);
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info("Check that declaring a let variable does not create a global property");
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await executeAndWaitForResultMessage(
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hud,
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`let bazA = await new Promise(r => setTimeout(() => r("local-bazA"), 10))`,
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"local-bazA"
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);
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await checkVariable(hud, "bazA");
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info(
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"Check that declaring a const variable does not create a global property"
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);
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await executeAndWaitForResultMessage(
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hud,
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`const bazB = await new Promise(r => setTimeout(() => r("local-bazB"), 10))`,
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"local-bazB"
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);
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await checkVariable(hud, "bazB");
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info("Check that complex variable declarations work as expected");
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await executeAndWaitForResultMessage(
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hud,
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`
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let bazC = "local-bazC", bazD, bazE = "local-bazE";
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bazD = await new Promise(r => setTimeout(() => r("local-bazD"), 10));
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let {
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a: bazF,
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b: {
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c: {
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bazG = "local-bazG",
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d: bazH,
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e: [bazI, bazJ = "local-bazJ"]
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},
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d: bazK = "local-bazK"
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}
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} = await ({
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a: "local-bazF",
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b: {
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c: {
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d: "local-bazH",
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e: ["local-bazI"]
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}
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}
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});`,
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""
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);
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await checkVariable(hud, "bazC");
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await checkVariable(hud, "bazD");
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await checkVariable(hud, "bazE");
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await checkVariable(hud, "bazF");
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await checkVariable(hud, "bazG");
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await checkVariable(hud, "bazH");
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await checkVariable(hud, "bazI");
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await checkVariable(hud, "bazJ");
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await checkVariable(hud, "bazK");
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});
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async function checkVariable(hud, varName) {
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await executeAndWaitForResultMessage(hud, `window.${varName}`, `undefined`);
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ok(true, `The ${varName} assignment did not create a global variable`);
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await executeAndWaitForResultMessage(hud, varName, `"local-${varName}"`);
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ok(true, `"${varName}" has the expected value`);
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}
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