1 files changed, 29 insertions, 0 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_bg_crash_while_idle.js b/toolkit/components/thumbnails/test/browser_thumbnails_bg_crash_while_idle.js
new file mode 100644
index 0000000000..4808f39e1c
--- /dev/null
+++ b/toolkit/components/thumbnails/test/browser_thumbnails_bg_crash_while_idle.js
@@ -0,0 +1,29 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+add_task(async function thumbnails_bg_crash_while_idle() {
+  // make a good capture first - this ensures we have the <browser>
+  let goodUrl = bgTestPageURL();
+  await bgCapture(goodUrl);
+  ok(thumbnailExists(goodUrl), "Thumbnail should be cached after capture");
+  removeThumbnail(goodUrl);
+
+  // Nothing is pending - crash the process.
+  info("Crashing the thumbnail content process.");
+  let crash = await BrowserTestUtils.crashFrame(
+    BackgroundPageThumbs._thumbBrowser,
+    false
+  );
+  ok(crash.CrashTime, "Saw a crash from this test");
+
+  // Now queue another capture and ensure it recovers.
+  await bgCapture(goodUrl, {
+    onDone: () => {
+      ok(
+        thumbnailExists(goodUrl),
+        "We should have recovered and handled new capture requests"
+      );
+      removeThumbnail(goodUrl);
+    },
+  });
+});