import FIREFOX_52_6_0esr_RELEASE from mozilla-esr52 hg repo

devtools/client/responsive.html/test/unit/test_update_device_displayed.js

@@ -0,0 +1,37 @@
+/* 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("devtools/client/responsive.html/actions/devices");
+
+add_task(function* () {
+  let store = Store();
+  const { getState, dispatch } = store;
+
+  let 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");
+});