src/chrome/browser/media/webrtc_browsertest_common.cc

   1 // Copyright 2013 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 "chrome/browser/media/webrtc_browsertest_common.h"
   6
   7 #include "base/command_line.h"
   8 #include "base/file_util.h"
   9 #include "base/path_service.h"
  10 #include "base/process/launch.h"
  11 #include "base/strings/stringprintf.h"
  12 #include "base/test/test_timeouts.h"
  13 #include "base/time/time.h"
  14 #include "chrome/browser/profiles/profile.h"
  15 #include "chrome/browser/ui/browser_tabstrip.h"
  16 #include "content/public/test/browser_test_utils.h"
  17
  18 const int kDefaultPollIntervalMsec = 250;
  19
  20 bool SleepInJavascript(content::WebContents* tab_contents, int timeout_msec) {
  21   const std::string javascript = base::StringPrintf(
  22       "setTimeout(function() {"
  23       "  window.domAutomationController.send('sleep-ok');"
  24       "}, %d)", timeout_msec);
  25
  26   std::string result;
  27   bool ok = content::ExecuteScriptAndExtractString(
  28       tab_contents, javascript, &result);
  29   return ok && result == "sleep-ok";
  30 }
  31
  32 bool PollingWaitUntil(const std::string& javascript,
  33                       const std::string& evaluates_to,
  34                       content::WebContents* tab_contents) {
  35   return PollingWaitUntil(javascript, evaluates_to, tab_contents,
  36                           kDefaultPollIntervalMsec);
  37 }
  38
  39 bool PollingWaitUntil(const std::string& javascript,
  40                       const std::string& evaluates_to,
  41                       content::WebContents* tab_contents,
  42                       int poll_interval_msec) {
  43   base::Time start_time = base::Time::Now();
  44   base::TimeDelta timeout = TestTimeouts::action_max_timeout();
  45   std::string result;
  46
  47   while (base::Time::Now() - start_time < timeout) {
  48     std::string result;
  49     if (!content::ExecuteScriptAndExtractString(tab_contents, javascript,
  50                                                 &result)) {
  51       LOG(ERROR) << "Failed to execute javascript " << javascript;
  52       return false;
  53     }
  54
  55     if (evaluates_to == result)
  56       return true;
  57
  58     // Sleep a bit here to keep this loop from spinlocking too badly.
  59     if (!SleepInJavascript(tab_contents, poll_interval_msec)) {
  60       // TODO(phoglund): Figure out why this fails every now and then.
  61       // It's not a huge deal if it does though.
  62       LOG(ERROR) << "Failed to sleep.";
  63     }
  64   }
  65   LOG(ERROR) << "Timed out while waiting for " << javascript <<
  66       " to evaluate to " << evaluates_to << "; last result was '" << result <<
  67       "'";
  68   return false;
  69 }
  70
  71 static base::FilePath::CharType kServerExecutable[] =
  72 #if defined(OS_WIN)
  73     FILE_PATH_LITERAL("peerconnection_server.exe");
  74 #else
  75     FILE_PATH_LITERAL("peerconnection_server");
  76 #endif
  77
  78 const char PeerConnectionServerRunner::kDefaultPort[] = "7778";
  79
  80 bool PeerConnectionServerRunner::Start() {
  81   base::FilePath peerconnection_server;
  82   if (!PathService::Get(base::DIR_MODULE, &peerconnection_server)) {
  83     LOG(ERROR) << "Failed retrieving base::DIR_MODULE!";
  84     return false;
  85   }
  86   peerconnection_server = peerconnection_server.Append(kServerExecutable);
  87
  88   if (!base::PathExists(peerconnection_server)) {
  89     LOG(ERROR) << "Missing " << kServerExecutable << ". You must build "
  90         "it so it ends up next to the browser test binary.";
  91     return false;
  92   }
  93
  94   CommandLine command_line(peerconnection_server);
  95   command_line.AppendSwitchASCII("port", kDefaultPort);
  96   LOG(INFO) << "Running " << command_line.GetCommandLineString();
  97   return base::LaunchProcess(command_line,
  98                              base::LaunchOptions(),
  99                              &server_pid_);
 100 }
 101
 102 bool PeerConnectionServerRunner::Stop() {
 103   return base::KillProcess(server_pid_, 0, false);
 104 }
 105
 106 void PeerConnectionServerRunner::KillAllPeerConnectionServersOnCurrentSystem() {
 107   if (!base::KillProcesses(kServerExecutable, -1, NULL)) {
 108     LOG(ERROR) << "Failed to kill instances of " << kServerExecutable << ".";
 109     return;
 110   }
 111   base::WaitForProcessesToExit(kServerExecutable,
 112                                base::TimeDelta::FromSeconds(5), NULL);
 113 }