Bug 1407987 Part 2: Add a test of finding offscreen text.
MozReview-Commit-ID: ATQRdHB0Q9j
--- a/toolkit/modules/tests/browser/browser.ini
+++ b/toolkit/modules/tests/browser/browser.ini
@@ -22,16 +22,17 @@ support-files =
WebRequest_dynamic.sjs
WebRequest_redirection.sjs
[browser_AsyncPrefs.js]
[browser_Battery.js]
[browser_Deprecated.js]
[browser_Finder.js]
[browser_Finder_hidden_textarea.js]
+[browser_Finder_offscreen_text.js]
[browser_FinderHighlighter.js]
skip-if = debug || os = "linux"
support-files = file_FinderSample.html
[browser_Geometry.js]
[browser_InlineSpellChecker.js]
[browser_WebNavigation.js]
skip-if = true # Superseded by WebExtension tests
[browser_WebRequest.js]
new file mode 100644
--- /dev/null
+++ b/toolkit/modules/tests/browser/browser_Finder_offscreen_text.js
@@ -0,0 +1,60 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function test_offscreen_text() {
+
+ // Generate URI of a big DOM that contains the target text at several
+ // line positions (to force some targets to be offscreen).
+ const linesToGenerate = 155;
+ const linesToInsertTargetText = [5, 50, 150];
+ let targetCount = linesToInsertTargetText.length;
+ let t = 0;
+ const TARGET_TEXT = "findthis";
+
+ let URI = "<body>";
+ for (let i = 0; i < linesToGenerate; i++) {
+ URI += i + "<br>";
+ if (t < targetCount && linesToInsertTargetText[t] == i) {
+ URI += TARGET_TEXT;
+ t++;
+ }
+ }
+ URI += "</body>";
+
+ await BrowserTestUtils.withNewTab({ gBrowser, url: "data:text/html;charset=utf-8," + encodeURIComponent(URI) },
+ async function(browser) {
+ let finder = browser.finder;
+ let listener = {
+ onFindResult() {
+ ok(false, "callback wasn't replaced");
+ }
+ };
+ finder.addResultListener(listener);
+
+ function waitForFind() {
+ return new Promise(resolve => {
+ listener.onFindResult = resolve;
+ })
+ }
+
+ // Find each of the targets.
+ for (let t = 0; t < targetCount; ++t) {
+ let promiseFind = waitForFind();
+ if (t == 0) {
+ finder.fastFind(TARGET_TEXT, false, false);
+ } else {
+ finder.findAgain(false, false, false);
+ }
+ let findResult = await promiseFind;
+ is(findResult.result, Ci.nsITypeAheadFind.FIND_FOUND, "Found target " + t);
+ }
+
+ // Find one more time and make sure we wrap.
+ let promiseFind = waitForFind();
+ finder.findAgain(false, false, false);
+ let findResult = await promiseFind;
+ is(findResult.result, Ci.nsITypeAheadFind.FIND_WRAPPED, "Wrapped to first target");
+
+ finder.removeResultListener(listener);
+ });
+});