1 files changed, 36 insertions, 0 deletions
diff --git a/devtools/client/styleeditor/test/browser_styleeditor_loading.js b/devtools/client/styleeditor/test/browser_styleeditor_loading.js
new file mode 100644
index 000000000..4657a0dce
--- /dev/null
+++ b/devtools/client/styleeditor/test/browser_styleeditor_loading.js
@@ -0,0 +1,36 @@
+/* vim: set ts=2 et sw=2 tw=80: */
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+"use strict";
+
+// Test that style editor loads correctly.
+
+const TESTCASE_URI = TEST_BASE_HTTP + "longload.html";
+
+add_task(function* () {
+  // launch Style Editor right when the tab is created (before load)
+  // this checks that the Style Editor still launches correctly when it is
+  // opened *while* the page is still loading. The Style Editor should not
+  // signal that it is loaded until the accompanying content page is loaded.
+  let tabAdded = addTab(TESTCASE_URI);
+  let target = TargetFactory.forTab(gBrowser.selectedTab);
+  let styleEditorLoaded = gDevTools.showToolbox(target, "styleeditor");
+
+  yield Promise.all([tabAdded, styleEditorLoaded]);
+
+  let toolbox = gDevTools.getToolbox(target);
+  let panel = toolbox.getPanel("styleeditor");
+  let { panelWindow } = panel;
+
+  let root = panelWindow.document.querySelector(".splitview-root");
+  ok(!root.classList.contains("loading"),
+     "style editor root element does not have 'loading' class name anymore");
+
+  let button = panelWindow.document.querySelector(".style-editor-newButton");
+  ok(!button.hasAttribute("disabled"),
+     "new style sheet button is enabled");
+
+  button = panelWindow.document.querySelector(".style-editor-importButton");
+  ok(!button.hasAttribute("disabled"),
+     "import button is enabled");
+});