1 files changed, 26 insertions, 0 deletions
diff --git a/toolkit/components/pdfjs/test/browser_pdfjs_not_default.js b/toolkit/components/pdfjs/test/browser_pdfjs_not_default.js
new file mode 100644
index 0000000000..ea05348bc9
--- /dev/null
+++ b/toolkit/components/pdfjs/test/browser_pdfjs_not_default.js
@@ -0,0 +1,26 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function test_pdfjs_not_default() {
+  var oldAction = changeMimeHandler(Ci.nsIHandlerInfo.useSystemDefault, true);
+  let dirFileObj = getChromeDir(getResolvedURI(gTestPath));
+  dirFileObj.append("file_pdfjs_test.pdf");
+
+  let tab = await BrowserTestUtils.openNewForegroundTab(
+    gBrowser,
+    dirFileObj.path
+  );
+
+  // If we don't have the Pdfjs actor loaded, this will throw
+  await getPdfjsActor();
+
+  changeMimeHandler(oldAction[0], oldAction[1]);
+
+  gBrowser.removeTab(tab);
+});
+
+function getPdfjsActor() {
+  let win = Services.wm.getMostRecentWindow("navigator:browser");
+  let selectedBrowser = win.gBrowser.selectedBrowser;
+  return selectedBrowser.browsingContext.currentWindowGlobal.getActor("Pdfjs");
+}