1 files changed, 24 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/browser/browser_user_agent_input.js b/devtools/client/responsive/test/browser/browser_user_agent_input.js
new file mode 100644
index 0000000000..cd7b843790
--- /dev/null
+++ b/devtools/client/responsive/test/browser/browser_user_agent_input.js
@@ -0,0 +1,24 @@
+/* Any copyright is dedicated to the Public Domain.
+http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+const TEST_URL = "data:text/html;charset=utf-8,";
+const NEW_USER_AGENT = "Mozilla/5.0 (Mobile; rv:39.0) Gecko/39.0 Firefox/39.0";
+
+addRDMTask(TEST_URL, async function ({ ui }) {
+  reloadOnUAChange(true);
+
+  info("Check the default state of the user agent input");
+  await testUserAgent(ui, DEFAULT_UA);
+
+  info(`Change the user agent input to ${NEW_USER_AGENT}`);
+  await changeUserAgentInput(ui, NEW_USER_AGENT);
+  await testUserAgent(ui, NEW_USER_AGENT);
+
+  info("Reset the user agent input back to the default UA");
+  await changeUserAgentInput(ui, "");
+  await testUserAgent(ui, DEFAULT_UA);
+
+  reloadOnUAChange(false);
+});