1 files changed, 15 insertions, 0 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_bg_basic.js b/toolkit/components/thumbnails/test/browser_thumbnails_bg_basic.js
new file mode 100644
index 0000000000..1adb2f03f1
--- /dev/null
+++ b/toolkit/components/thumbnails/test/browser_thumbnails_bg_basic.js
@@ -0,0 +1,15 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function thumbnails_bg_basic() {
+  let url = "http://www.example.com/";
+  ok(!thumbnailExists(url), "Thumbnail should not be cached yet.");
+
+  let capturePromise = bgAddPageThumbObserver(url);
+  let [capturedURL] = await bgCapture(url);
+  is(capturedURL, url, "Captured URL should be URL passed to capture");
+  await capturePromise;
+
+  ok(thumbnailExists(url), "Thumbnail should be cached after capture");
+  removeThumbnail(url);
+});