diff options
Diffstat (limited to 'toolkit/components/reader/tests/browser/browser_bug1780350_readerModeSaveScroll.js')
-rw-r--r-- | toolkit/components/reader/tests/browser/browser_bug1780350_readerModeSaveScroll.js | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/toolkit/components/reader/tests/browser/browser_bug1780350_readerModeSaveScroll.js b/toolkit/components/reader/tests/browser/browser_bug1780350_readerModeSaveScroll.js new file mode 100644 index 0000000000..76add5511e --- /dev/null +++ b/toolkit/components/reader/tests/browser/browser_bug1780350_readerModeSaveScroll.js @@ -0,0 +1,70 @@ +/* eslint-disable @microsoft/sdl/no-insecure-url */ +/* Any copyright is dedicated to the Public Domain. + http://creativecommons.org/publicdomain/zero/1.0/ */ +"use strict"; + +const TEST_PATH = getRootDirectory(gTestPath).replace( + "chrome://mochitests/content", + "http://example.com" +); + +// This test verifies that when a link is clicked from +// within reader view, when navigating back to reader view +// the previous scroll position of the page is restored. +add_task(async function test_save_scroll_position() { + await BrowserTestUtils.withNewTab( + TEST_PATH + "readerModeArticleContainsLink.html", + async function (browser) { + let pageShownPromise = BrowserTestUtils.waitForContentEvent( + browser, + "AboutReaderContentReady" + ); + let browserLoadedPromise = BrowserTestUtils.browserLoaded(browser); + let readerButton = document.getElementById("reader-mode-button"); + readerButton.click(); + await Promise.all([pageShownPromise, browserLoadedPromise]); + let scrollEventPromise = BrowserTestUtils.waitForContentEvent( + browser, + "scroll", + true + ); + // Set scroll position in reader to 200px down. + await SpecialPowers.spawn(browser, [], async function () { + content.document.documentElement.scrollTop = 200; + }); + await scrollEventPromise; + + // Click linked page and check that scroll pos resets. + await SpecialPowers.spawn(browser, [], async function () { + let linkElement = content.document.getElementById("link"); + linkElement.click(); + }); + await BrowserTestUtils.browserLoaded(browser); + await SpecialPowers.spawn(browser, [], async function () { + is( + content.document.documentElement.scrollTop, + 0, + "vertical scroll position should reset to zero when navigating to linked page." + ); + content.window.history.back(); + }); + + // Navigate back to reader and check that scroll position is restored. + await BrowserTestUtils.browserLoaded(browser); + scrollEventPromise = BrowserTestUtils.waitForContentEvent( + browser, + "scroll", + true + ); + await scrollEventPromise; + await SpecialPowers.spawn(browser, [], async function () { + let doc = content.document; + is( + doc.documentElement.scrollTop, + 200, + "should restore saved scroll position when navigating back from link." + ); + }); + } + ); +}); |