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/* Any copyright is dedicated to the Public Domain.
* http://creativecommons.org/publicdomain/zero/1.0/ */
// Test that top-level await expressions work as expected.
"use strict";
const TEST_URI =
"data:text/html;charset=utf-8,<!DOCTYPE html>Web Console test top-level await bindings";
add_task(async function () {
// Enable await mapping.
await pushPref("devtools.debugger.features.map-await-expression", true);
const hud = await openNewTabAndConsole(TEST_URI);
info("Check that declaring a let variable does not create a global property");
await executeAndWaitForResultMessage(
hud,
`let bazA = await new Promise(r => setTimeout(() => r("local-bazA"), 10))`,
"local-bazA"
);
await checkVariable(hud, "bazA");
info(
"Check that declaring a const variable does not create a global property"
);
await executeAndWaitForResultMessage(
hud,
`const bazB = await new Promise(r => setTimeout(() => r("local-bazB"), 10))`,
"local-bazB"
);
await checkVariable(hud, "bazB");
info("Check that complex variable declarations work as expected");
await executeAndWaitForResultMessage(
hud,
`
let bazC = "local-bazC", bazD, bazE = "local-bazE";
bazD = await new Promise(r => setTimeout(() => r("local-bazD"), 10));
let {
a: bazF,
b: {
c: {
bazG = "local-bazG",
d: bazH,
e: [bazI, bazJ = "local-bazJ"]
},
d: bazK = "local-bazK"
}
} = await ({
a: "local-bazF",
b: {
c: {
d: "local-bazH",
e: ["local-bazI"]
}
}
});`,
""
);
await checkVariable(hud, "bazC");
await checkVariable(hud, "bazD");
await checkVariable(hud, "bazE");
await checkVariable(hud, "bazF");
await checkVariable(hud, "bazG");
await checkVariable(hud, "bazH");
await checkVariable(hud, "bazI");
await checkVariable(hud, "bazJ");
await checkVariable(hud, "bazK");
});
async function checkVariable(hud, varName) {
await executeAndWaitForResultMessage(hud, `window.${varName}`, `undefined`);
ok(true, `The ${varName} assignment did not create a global variable`);
await executeAndWaitForResultMessage(hud, varName, `"local-${varName}"`);
ok(true, `"${varName}" has the expected value`);
}
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