1 files changed, 23 insertions, 0 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_bg_bad_url.js b/toolkit/components/thumbnails/test/browser_thumbnails_bg_bad_url.js
new file mode 100644
index 0000000000..df8ef8d965
--- /dev/null
+++ b/toolkit/components/thumbnails/test/browser_thumbnails_bg_bad_url.js
@@ -0,0 +1,23 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+function* runTests() {
+  let url = "invalid-protocol://ffggfsdfsdf/";
+  ok(!thumbnailExists(url), "Thumbnail should not be cached already.");
+  let numCalls = 0;
+  BackgroundPageThumbs.capture(url, {
+    onDone: function onDone(capturedURL) {
+      is(capturedURL, url, "Captured URL should be URL passed to capture");
+      is(numCalls++, 0, "onDone should be called only once");
+      ok(!thumbnailExists(url),
+         "Capture failed so thumbnail should not be cached");
+      next();
+    },
+  });
+  yield new Promise(resolve => {
+    bgAddPageThumbObserver(url).catch(function(err) {
+      ok(true, "page-thumbnail error produced");
+      resolve();
+    });
+  });
+}