browser_dbg-merge-scopes.js

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/* This Source Code Form is subject to the terms of the Mozilla Public

 * License, v. 2.0. If a copy of the MPL was not distributed with this

 * file, You can obtain one at <http://mozilla.org/MPL/2.0/>. */

// Test that adjacent scopes are merged together as expected.

"use strict";

add_task(async function () {

  const dbg = await initDebugger("doc-merge-scopes.html");

  invokeInTab("run");

  await waitForPaused(dbg, "doc-merge-scopes.html");

  // Function body and function lexical scopes are merged together.

  expectLabels(dbg, ["first", "<this>", "arguments", "x", "y", "z"]);

  await resume(dbg);

  await waitForPaused(dbg);

  // Function body and inner lexical scopes are not merged together.

  await toggleScopeNode(dbg, 4);

  expectLabels(dbg, ["Block", "<this>", "y", "second", "arguments", "x"]);

  await resume(dbg);

  await waitForPaused(dbg);

  // When there is a function body, function lexical, and inner lexical scope,

  // the first two are merged together.

  await toggleScopeNode(dbg, 4);

  expectLabels(dbg, [

    "Block",

    "<this>",

    "z",

    "third",

    "arguments",

    "v",

    "x",

    "y",

]);

});

function expectLabels(dbg, array) {

  for (let i = 0; i < array.length; i++) {

is(

      getScopeNodeLabel(dbg, i + 1),

      array[i],

      `Correct label ${array[i]} for index ${i + 1}`

);