1 files changed, 38 insertions, 0 deletions
diff --git a/devtools/client/responsive/test/xpcshell/test_update_device_displayed.js b/devtools/client/responsive/test/xpcshell/test_update_device_displayed.js
new file mode 100644
index 0000000000..2d04b546ba
--- /dev/null
+++ b/devtools/client/responsive/test/xpcshell/test_update_device_displayed.js
@@ -0,0 +1,38 @@
+/* Any copyright is dedicated to the Public Domain.
+   http://creativecommons.org/publicdomain/zero/1.0/ */
+
+"use strict";
+
+// Test updating the device `displayed` property
+
+const {
+  addDevice,
+  addDeviceType,
+  updateDeviceDisplayed,
+} = require("resource://devtools/client/responsive/actions/devices.js");
+
+add_task(async function () {
+  const store = Store();
+  const { getState, dispatch } = store;
+
+  const device = {
+    name: "Firefox OS Flame",
+    width: 320,
+    height: 570,
+    pixelRatio: 1.5,
+    userAgent: "Mozilla/5.0 (Mobile; rv:39.0) Gecko/39.0 Firefox/39.0",
+    touch: true,
+    firefoxOS: true,
+    os: "fxos",
+  };
+
+  dispatch(addDeviceType("phones"));
+  dispatch(addDevice(device, "phones"));
+  dispatch(updateDeviceDisplayed(device, "phones", true));
+
+  equal(getState().devices.phones.length, 1, "Correct number of phones");
+  ok(
+    getState().devices.phones[0].displayed,
+    "Device phone list contains enabled Firefox OS Flame"
+  );
+});