1 files changed, 59 insertions, 0 deletions
diff --git a/browser/components/extensions/test/browser/browser_ext_commands_onChanged.js b/browser/components/extensions/test/browser/browser_ext_commands_onChanged.js
new file mode 100644
index 0000000000..2b44d472cc
--- /dev/null
+++ b/browser/components/extensions/test/browser/browser_ext_commands_onChanged.js
@@ -0,0 +1,59 @@
+"use strict";
+
+add_task(async function () {
+  let extension = ExtensionTestUtils.loadExtension({
+    useAddonManager: "permanent",
+    manifest: {
+      browser_specific_settings: { gecko: { id: "commands@mochi.test" } },
+      commands: {
+        foo: {
+          suggested_key: {
+            default: "Ctrl+Shift+V",
+          },
+          description: "The foo command",
+        },
+      },
+    },
+    background: async function () {
+      const { commands } = browser.runtime.getManifest();
+
+      const originalFoo = commands.foo;
+
+      let resolver = {};
+      resolver.promise = new Promise(resolve => (resolver.resolve = resolve));
+
+      browser.commands.onChanged.addListener(update => {
+        browser.test.assertDeepEq(
+          update,
+          {
+            name: "foo",
+            newShortcut: "Ctrl+Shift+L",
+            oldShortcut: originalFoo.suggested_key.default,
+          },
+          `The name should match what was provided in the manifest.
+           The new shortcut should match what was provided in the update.
+           The old shortcut should match what was provided in the manifest
+          `
+        );
+        browser.test.assertFalse(
+          resolver.hasResolvedAlready,
+          `resolver was not resolved yet`
+        );
+        resolver.resolve();
+        resolver.hasResolvedAlready = true;
+      });
+
+      await browser.commands.update({ name: "foo", shortcut: "Ctrl+Shift+L" });
+      // We're checking that nothing emits when
+      // the new shortcut is identical to the old one
+      await browser.commands.update({ name: "foo", shortcut: "Ctrl+Shift+L" });
+
+      await resolver.promise;
+
+      browser.test.notifyPass("commands");
+    },
+  });
+  await extension.startup();
+  await extension.awaitFinish("commands");
+  await extension.unload();
+});