1 files changed, 15 insertions, 0 deletions
diff --git a/browser/extensions/pdfjs/test/head.js b/browser/extensions/pdfjs/test/head.js
new file mode 100644
index 000000000..d980bceb1
--- /dev/null
+++ b/browser/extensions/pdfjs/test/head.js
@@ -0,0 +1,15 @@
+function waitForPdfJS(browser, url) {
+  // Runs tests after all 'load' event handlers have fired off
+  return ContentTask.spawn(browser, url, function* (url) {
+    yield new Promise((resolve) => {
+      // NB: Add the listener to the global object so that we receive the
+      // event fired from the new window.
+      addEventListener("documentload", function listener() {
+        removeEventListener("documentload", listener, false);
+        resolve();
+      }, false, true);
+
+      content.location = url;
+    });
+  });
+}