1 files changed, 23 insertions, 0 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_bg_timeout.js b/toolkit/components/thumbnails/test/browser_thumbnails_bg_timeout.js
new file mode 100644
index 0000000000..4deabaf325
--- /dev/null
+++ b/toolkit/components/thumbnails/test/browser_thumbnails_bg_timeout.js
@@ -0,0 +1,23 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function thumbnails_bg_timeout() {
+  let url = bgTestPageURL({ wait: 30000 });
+  ok(!thumbnailExists(url), "Thumbnail should not be cached already.");
+  let numCalls = 0;
+  let thumbnailErrorPromise = bgAddPageThumbObserver(url);
+
+  await bgCapture(url, {
+    timeout: 0,
+    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 timed out so thumbnail should not be cached"
+      );
+    },
+  });
+
+  await Assert.rejects(thumbnailErrorPromise, /page-thumbnail:error/);
+});