70 lines
2.4 KiB
JavaScript
70 lines
2.4 KiB
JavaScript
/* eslint-disable @microsoft/sdl/no-insecure-url */
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/* Any copyright is dedicated to the Public Domain.
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http://creativecommons.org/publicdomain/zero/1.0/ */
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"use strict";
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const TEST_PATH = getRootDirectory(gTestPath).replace(
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"chrome://mochitests/content",
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"http://example.com"
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);
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// This test verifies that when a link is clicked from
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// within reader view, when navigating back to reader view
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// the previous scroll position of the page is restored.
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add_task(async function test_save_scroll_position() {
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await BrowserTestUtils.withNewTab(
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TEST_PATH + "readerModeArticleContainsLink.html",
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async function (browser) {
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let pageShownPromise = BrowserTestUtils.waitForContentEvent(
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browser,
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"AboutReaderContentReady"
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);
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let browserLoadedPromise = BrowserTestUtils.browserLoaded(browser);
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let readerButton = document.getElementById("reader-mode-button");
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readerButton.click();
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await Promise.all([pageShownPromise, browserLoadedPromise]);
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let scrollEventPromise = BrowserTestUtils.waitForContentEvent(
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browser,
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"scroll",
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true
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);
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// Set scroll position in reader to 200px down.
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await SpecialPowers.spawn(browser, [], async function () {
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content.document.documentElement.scrollTop = 200;
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});
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await scrollEventPromise;
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// Click linked page and check that scroll pos resets.
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await SpecialPowers.spawn(browser, [], async function () {
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let linkElement = content.document.getElementById("link");
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linkElement.click();
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});
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await BrowserTestUtils.browserLoaded(browser);
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await SpecialPowers.spawn(browser, [], async function () {
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is(
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content.document.documentElement.scrollTop,
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0,
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"vertical scroll position should reset to zero when navigating to linked page."
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);
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content.window.history.back();
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});
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// Navigate back to reader and check that scroll position is restored.
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await BrowserTestUtils.browserLoaded(browser);
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scrollEventPromise = BrowserTestUtils.waitForContentEvent(
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browser,
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"scroll",
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true
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);
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await scrollEventPromise;
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await SpecialPowers.spawn(browser, [], async function () {
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let doc = content.document;
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is(
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doc.documentElement.scrollTop,
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200,
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"should restore saved scroll position when navigating back from link."
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);
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});
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}
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);
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});
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