browser_dbg-stepping.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/>. */

"use strict";

// This test can be really slow on debug platforms

requestLongerTimeout(5);

add_task(async function test() {

  await pushPref("devtools.debugger.map-scopes-enabled", true);

  const dbg = await initDebugger(

    "big-sourcemap.html",

    "bundle.js",

    "step-in-test.js"

);

  invokeInTab("hitDebugStatement");

  // Bug 1829860 - The sourcemap for this file is broken and we couldn't resolve the paused location

  // to the related original file. The debugger fallbacks to the generated source,

  // but that highlights a bug in the example page.

  await waitForPaused(dbg, "bundle.js");

  assertPausedAtSourceAndLine(dbg, findSource(dbg, "bundle.js").id, 52411);

  await stepIn(dbg);

  const whyPaused = await waitFor(

    () => dbg.win.document.querySelector(".why-paused")?.innerText

);

  is(whyPaused, `Paused while stepping`);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  await stepIn(dbg);

  // Note that we are asserting against an original source here,

  // See earlier comment about paused in bundle.js

  assertPausedAtSourceAndLine(dbg, findSource(dbg, "step-in-test.js").id, 7679);

});