1 files changed, 44 insertions, 0 deletions
diff --git a/devtools/client/framework/test/browser_dynamic_tool_enabling.js b/devtools/client/framework/test/browser_dynamic_tool_enabling.js
new file mode 100644
index 0000000000..56313607cf
--- /dev/null
+++ b/devtools/client/framework/test/browser_dynamic_tool_enabling.js
@@ -0,0 +1,44 @@
+/* Any copyright is dedicated to the Public Domain.
+ * http://creativecommons.org/publicdomain/zero/1.0/ */
+
+// Tests that toggling prefs immediately (de)activates the relevant menuitem
+
+var gItemsToTest = {
+  menu_browserToolbox: [
+    "devtools.chrome.enabled",
+    "devtools.debugger.remote-enabled",
+  ],
+};
+
+function expectedAttributeValueFromPrefs(prefs) {
+  return prefs.every(pref => Services.prefs.getBoolPref(pref)) ? "" : "true";
+}
+
+function checkItem(el, prefs) {
+  const expectedValue = expectedAttributeValueFromPrefs(prefs);
+  is(
+    el.getAttribute("disabled"),
+    expectedValue,
+    "disabled attribute should match current pref state"
+  );
+  is(
+    el.getAttribute("hidden"),
+    expectedValue,
+    "hidden attribute should match current pref state"
+  );
+}
+
+function test() {
+  for (const k in gItemsToTest) {
+    const el = document.getElementById(k);
+    const prefs = gItemsToTest[k];
+    checkItem(el, prefs);
+    for (const pref of prefs) {
+      Services.prefs.setBoolPref(pref, !Services.prefs.getBoolPref(pref));
+      checkItem(el, prefs);
+      Services.prefs.setBoolPref(pref, !Services.prefs.getBoolPref(pref));
+      checkItem(el, prefs);
+    }
+  }
+  finish();
+}