1 files changed, 77 insertions, 0 deletions
diff --git a/toolkit/content/tests/browser/browser_bug982298.js b/toolkit/content/tests/browser/browser_bug982298.js
new file mode 100644
index 0000000000..94846ff1cd
--- /dev/null
+++ b/toolkit/content/tests/browser/browser_bug982298.js
@@ -0,0 +1,77 @@
+const scrollHtml =
+  '<textarea id="textarea1" row=2>Firefox\n\nFirefox\n\n\n\n\n\n\n\n\n\n' +
+  '</textarea><a href="about:blank">blank</a>';
+
+add_task(async function () {
+  let url = "data:text/html;base64," + btoa(scrollHtml);
+  await BrowserTestUtils.withNewTab(
+    { gBrowser, url },
+    async function (browser) {
+      let awaitFindResult = new Promise(resolve => {
+        let listener = {
+          onFindResult(aData) {
+            info("got find result");
+            browser.finder.removeResultListener(listener);
+
+            ok(
+              aData.result == Ci.nsITypeAheadFind.FIND_FOUND,
+              "should find string"
+            );
+            resolve();
+          },
+          onCurrentSelection() {},
+          onMatchesCountResult() {},
+        };
+        info(
+          "about to add results listener, open find bar, and send 'F' string"
+        );
+        browser.finder.addResultListener(listener);
+      });
+      await gFindBarPromise;
+      gFindBar.onFindCommand();
+      EventUtils.sendString("F");
+      info("added result listener and sent string 'F'");
+      await awaitFindResult;
+
+      // scroll textarea to bottom
+      await SpecialPowers.spawn(browser, [], () => {
+        let textarea = content.document.getElementById("textarea1");
+        textarea.scrollTop = textarea.scrollHeight;
+      });
+      BrowserTestUtils.loadURIString(browser, "about:blank");
+      await BrowserTestUtils.browserLoaded(browser);
+
+      ok(
+        browser.currentURI.spec == "about:blank",
+        "got load event for about:blank"
+      );
+
+      let awaitFindResult2 = new Promise(resolve => {
+        let listener = {
+          onFindResult(aData) {
+            info("got find result #2");
+            browser.finder.removeResultListener(listener);
+            resolve();
+          },
+          onCurrentSelection() {},
+          onMatchesCountResult() {},
+        };
+
+        browser.finder.addResultListener(listener);
+        info("added result listener");
+      });
+      // find again needs delay for crash test
+      setTimeout(function () {
+        // ignore exception if occured
+        try {
+          info("about to send find again command");
+          gFindBar.onFindAgainCommand(false);
+          info("sent find again command");
+        } catch (e) {
+          info("got exception from onFindAgainCommand: " + e);
+        }
+      }, 0);
+      await awaitFindResult2;
+    }
+  );
+});