[ChromeDriver] Support mobile emulation on desktop Chrome.

chrome/test/chromedriver/capabilities_unittest.cc

 // Copyright (c) 2013 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/test/chromedriver/capabilities.h"
 
 #include "base/values.h"
 #include "chrome/test/chromedriver/chrome/log.h"
 #include "chrome/test/chromedriver/chrome/status.h"
 #include "testing/gtest/include/gtest/gtest.h"
@@ skipping 343 matching lines @@
 TEST(ParseCapabilities, UseExistingBrowser) {
   Capabilities capabilities;
   base::DictionaryValue caps;
   caps.SetString("chromeOptions.debuggerAddress", "abc:123");
   Status status = capabilities.Parse(caps);
   ASSERT_TRUE(status.IsOk());
   ASSERT_TRUE(capabilities.IsExistingBrowser());
   ASSERT_EQ("abc", capabilities.debugger_address.host());
   ASSERT_EQ(123, capabilities.debugger_address.port());
 }
+
+TEST(ParseCapabilities, MobileEmulationUserAgent) {
+  Capabilities capabilities;
+  base::DictionaryValue mobile_emulation;
+  mobile_emulation.SetString("userAgent", "Agent Smith");
+  base::DictionaryValue caps;
+  caps.Set("chromeOptions.mobileEmulation", mobile_emulation.DeepCopy());
+  Status status = capabilities.Parse(caps);
+  ASSERT_TRUE(status.IsOk());
+
+  ASSERT_EQ(1u, capabilities.switches.GetSize());
+  ASSERT_TRUE(capabilities.switches.HasSwitch("user-agent"));
+  ASSERT_EQ("'Agent Smith'",
+            capabilities.switches.GetSwitchValue("user-agent"));
+}
+
+TEST(ParseCapabilities, MobileEmulationDeviceMetrics) {
+  Capabilities capabilities;
+  base::DictionaryValue mobile_emulation;
+  mobile_emulation.SetInteger("deviceMetrics.width", 360);
+  mobile_emulation.SetInteger("deviceMetrics.height", 640);
+  mobile_emulation.SetDouble("deviceMetrics.pixelRatio", 3.0);
+  base::DictionaryValue caps;
+  caps.Set("chromeOptions.mobileEmulation", mobile_emulation.DeepCopy());
+  Status status = capabilities.Parse(caps);
+  ASSERT_TRUE(status.IsOk());
+
+  ASSERT_EQ(360, capabilities.device_metrics.width);
+  ASSERT_EQ(640, capabilities.device_metrics.height);
+  ASSERT_EQ(3.0, capabilities.device_metrics.device_scale_factor);
+}
+
+TEST(ParseCapabilities, MobileEmulationDeviceName) {
+  Capabilities capabilities;
+  base::DictionaryValue mobile_emulation;
+  mobile_emulation.SetString("deviceName", "Google Nexus 5");
+  base::DictionaryValue caps;
+  caps.Set("chromeOptions.mobileEmulation", mobile_emulation.DeepCopy());
+  Status status = capabilities.Parse(caps);
+  ASSERT_TRUE(status.IsOk());
+
+  ASSERT_EQ(1u, capabilities.switches.GetSize());
+  ASSERT_TRUE(capabilities.switches.HasSwitch("user-agent"));
+  ASSERT_EQ("'Mozilla/5.0 (Linux; Android 4.2.1; en-us; Nexus 5 Build/JOP40D) AppleWebKit/535.19 (KHTML, like Gecko) Chrome/18.0.1025.166 Mobile Safari/535.19'", capabilities.switches.GetSwitchValue("user-agent"));
+
+  ASSERT_EQ(360, capabilities.device_metrics.width);
+  ASSERT_EQ(640, capabilities.device_metrics.height);
+  ASSERT_EQ(3.0, capabilities.device_metrics.device_scale_factor);
+}