1 files changed, 30 insertions, 0 deletions
diff --git a/devtools/client/styleeditor/test/browser_styleeditor_missing_stylesheet.js b/devtools/client/styleeditor/test/browser_styleeditor_missing_stylesheet.js
new file mode 100644
index 000000000..e7511c914
--- /dev/null
+++ b/devtools/client/styleeditor/test/browser_styleeditor_missing_stylesheet.js
@@ -0,0 +1,30 @@
+"use strict";
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Checks that the style editor manages to finalize its stylesheet loading phase
+// even if one stylesheet is missing, and that an error message is displayed.
+
+const TESTCASE_URI = TEST_BASE + "missing.html";
+
+add_task(function* () {
+  let { ui, toolbox, panel } = yield openStyleEditorForURL(TESTCASE_URI);
+
+  // Note that we're not testing for a specific number of stylesheet editors
+  // below because the test-page is loaded with chrome:// URL and, right now,
+  // that means UA stylesheets are shown. So we avoid hardcoding the number of
+  // stylesheets here.
+  ok(ui.editors.length, "The UI contains style sheets.");
+
+  let rootEl = panel.panelWindow.document.getElementById("style-editor-chrome");
+  ok(!rootEl.classList.contains("loading"), "The loading indicator is hidden");
+
+  let notifBox = toolbox.getNotificationBox();
+  let notif = notifBox.getCurrentNotification();
+  ok(notif, "The notification box contains a message");
+  ok(notif.label.indexOf("Style sheet could not be loaded") !== -1,
+    "The error message is the correct one");
+  ok(notif.label.indexOf("missing-stylesheet.css") !== -1,
+    "The error message contains the missing stylesheet's URL");
+});