browser_dbg-editor-scroll.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/>. */

// Tests that the editor keeps proper scroll position per document

// while also moving to the correct location upon pause/breakpoint selection

"use strict";

requestLongerTimeout(2);

add_task(async function () {

  // This test runs too slowly on linux debug. I'd like to figure out

  // which is the slowest part of this and make it run faster, but to

  // fix a frequent failure allow a longer timeout.

  const dbg = await initDebugger("doc-editor-scroll.html");

  // Set the initial breakpoint.

  await selectSource(dbg, "simple1.js");

  await addBreakpoint(dbg, "simple1.js", 26);

  const cm = getCM(dbg);

  info("Open long file, scroll down to line below the fold");

  await selectSource(dbg, "long.js");

  cm.scrollTo(0, 600);

  info("Ensure vertical scroll is the same after switching documents");

  await selectSource(dbg, "simple1.js");

  is(cm.getScrollInfo().top, 0);

  await selectSource(dbg, "long.js");

  is(cm.getScrollInfo().top, 600);

  info("Trigger a pause, click on a frame, ensure the right line is selected");

  invokeInTab("doNamedEval");

  await waitForPaused(dbg);

  findElement(dbg, "frame", 1).focus();

  await clickElement(dbg, "frame", 1);

  Assert.notEqual(

    cm.getScrollInfo().top,

0,

    "frame scrolled down to correct location"

);

  info("Navigating while paused, goes to the correct location");

  await selectSource(dbg, "long.js");

  is(cm.getScrollInfo().top, 600);

  info("Open new source, ensure it's at 0 scroll");

  await selectSource(dbg, "frames.js");

  is(cm.getScrollInfo().top, 0);

});