content/browser/media/webrtc_webcam_browsertest.cc

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "base/command_line.h"
   6 #include "base/strings/utf_string_conversions.h"
   7 #include "content/browser/web_contents/web_contents_impl.h"
   8 #include "content/public/common/content_switches.h"
   9 #include "content/public/test/browser_test_utils.h"
  10 #include "content/public/test/content_browser_test.h"
  11 #include "content/public/test/content_browser_test_utils.h"
  12 #include "content/public/test/test_utils.h"
  13 #include "content/shell/browser/shell.h"
  14 #include "media/base/media_switches.h"
  15 #include "net/test/embedded_test_server/embedded_test_server.h"
  16
  17 namespace {
  18
  19 const base::CommandLine::StringType FAKE_DEVICE_FLAG =
  20 #if defined(OS_WIN)
  21     base::ASCIIToUTF16(switches::kUseFakeDeviceForMediaStream);
  22 #else
  23     switches::kUseFakeDeviceForMediaStream;
  24 #endif
  25
  26 bool IsUseFakeDeviceForMediaStream(const base::CommandLine::StringType& arg) {
  27   return arg.find(FAKE_DEVICE_FLAG) != std::string::npos;
  28 }
  29
  30 void RemoveFakeDeviceFromCommandLine(base::CommandLine* command_line) {
  31   CommandLine::StringVector argv = command_line->argv();
  32   argv.erase(std::remove_if(argv.begin(), argv.end(),
  33                             IsUseFakeDeviceForMediaStream),
  34              argv.end());
  35   command_line->InitFromArgv(argv);
  36 }
  37
  38 }  // namespace
  39
  40 namespace content {
  41
  42 // This class doesn't inherit from WebRtcContentBrowserTestBase like the others
  43 // since we want it to actually acquire the real webcam on the system (if there
  44 // is one).
  45 class WebRtcWebcamBrowserTest: public ContentBrowserTest {
  46  public:
  47   ~WebRtcWebcamBrowserTest() override {}
  48
  49   void SetUpCommandLine(base::CommandLine* command_line) override {
  50     ASSERT_TRUE(command_line->HasSwitch(switches::kUseFakeUIForMediaStream));
  51
  52     // The content_browsertests run with this flag by default, and this test is
  53     // the only current exception to that rule, so just remove the flag
  54     // --use-fake-device-for-media-stream here. We could also have all tests
  55     // involving media streams add this flag explicitly, but it will be really
  56     // unintuitive for developers to write tests involving media stream and have
  57     // them fail on what looks like random bots, so running with fake devices
  58     // is really a reasonable default.
  59     RemoveFakeDeviceFromCommandLine(command_line);
  60   }
  61
  62   void SetUp() override {
  63     EnablePixelOutput();
  64     ContentBrowserTest::SetUp();
  65   }
  66 };
  67
  68 // The test is tagged as MANUAL since the webcam is a system-level resource; we
  69 // only want it to run on bots where we can ensure sequential execution. The
  70 // Android bots will run the test since they ignore MANUAL, but that's what we
  71 // want here since the bot runs tests sequentially on the device.
  72 IN_PROC_BROWSER_TEST_F(WebRtcWebcamBrowserTest,
  73                        MANUAL_CanAcquireVgaOnRealWebcam) {
  74   ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
  75   GURL url(embedded_test_server()->GetURL(
  76       "/media/getusermedia-real-webcam.html"));
  77   NavigateToURL(shell(), url);
  78
  79   std::string result;
  80   ASSERT_TRUE(ExecuteScriptAndExtractString(shell()->web_contents(),
  81                                             "hasVideoInputDeviceOnSystem()",
  82                                             &result));
  83   if (result != "has-video-input-device") {
  84     VLOG(0) << "No video device; skipping test...";
  85     return;
  86   }
  87
  88   // GetUserMedia should acquire VGA by default.
  89   ASSERT_TRUE(ExecuteScriptAndExtractString(
  90       shell()->web_contents(),
  91       "getUserMediaAndReturnVideoDimensions({video: true})",
  92       &result));
  93
  94   if (result == "640x480" || result == "480x640") {
  95     // Don't care if the device happens to be in landscape or portrait mode
  96     // since we don't know how it is oriented in the lab :)
  97     return;
  98   }
  99   FAIL() << "Expected resolution to be 640x480 or 480x640, got" << result;
 100 }
 101
 102 }  // namespace content