1 files changed, 20 insertions, 0 deletions
diff --git a/toolkit/components/thumbnails/test/browser_thumbnails_capture.js b/toolkit/components/thumbnails/test/browser_thumbnails_capture.js
new file mode 100644
index 0000000000..47d94d31ba
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+++ b/toolkit/components/thumbnails/test/browser_thumbnails_capture.js
@@ -0,0 +1,20 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+/**
+ * These tests ensure that capturing a sites's thumbnail, saving it and
+ * retrieving it from the cache works.
+ */
+function* runTests() {
+  // Create a tab with a red background.
+  yield addTab("data:text/html,<body bgcolor=ff0000></body>");
+  yield captureAndCheckColor(255, 0, 0, "we have a red thumbnail");
+
+  // Load a page with a green background.
+  yield navigateTo("data:text/html,<body bgcolor=00ff00></body>");
+  yield captureAndCheckColor(0, 255, 0, "we have a green thumbnail");
+
+  // Load a page with a blue background.
+  yield navigateTo("data:text/html,<body bgcolor=0000ff></body>");
+  yield captureAndCheckColor(0, 0, 255, "we have a blue thumbnail");
+}