Adding physical webcam tests for WebRTC.

These tests are meant to run on special webcam-equipped bots and test
WebRTC's capturer paths.

BUG=332781

Review URL: https://codereview.chromium.org/216423004

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@261745 0039d316-1c4b-4281-b951-d872f2087c98

3 files changed, 130 insertions, 0 deletions

diff --git a/chrome/browser/media/chrome_webrtc_webcam_browsertest.cc b/chrome/browser/media/chrome_webrtc_webcam_browsertest.cc
new file mode 100644
index 0000000..d8f6449
--- /dev/null
+++ b/chrome/browser/media/chrome_webrtc_webcam_browsertest.cc
@@ -0,0 +1,80 @@
+// Copyright 2014 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 "base/command_line.h"
+#include "chrome/browser/media/webrtc_browsertest_base.h"
+#include "chrome/browser/media/webrtc_browsertest_common.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/browser/ui/browser_tabstrip.h"
+#include "chrome/browser/ui/tabs/tab_strip_model.h"
+#include "chrome/common/chrome_switches.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "chrome/test/base/ui_test_utils.h"
+#include "content/public/test/browser_test_utils.h"
+#include "net/test/embedded_test_server/embedded_test_server.h"
+
+static const char kMainWebrtcTestHtmlPage[] =
+    "/webrtc/webrtc_jsep01_test.html";
+
+// These tests runs on real webcams and ensure WebRTC can acquire webcams
+// correctly. They will do nothing if there are no webcams on the system.
+// The webcam on the system must support up to 1080p, or the test will fail.
+class WebRtcWebcamBrowserTest : public WebRtcTestBase {
+ public:
+  virtual void SetUpCommandLine(CommandLine* command_line) OVERRIDE {
+    EXPECT_FALSE(command_line->HasSwitch(
+        switches::kUseFakeDeviceForMediaStream));
+    EXPECT_FALSE(command_line->HasSwitch(
+        switches::kUseFakeUIForMediaStream));
+  }
+
+  virtual void SetUpInProcessBrowserTestFixture() OVERRIDE {
+    DetectErrorsInJavaScript();  // Look for errors in our rather complex js.
+  }
+};
+
+IN_PROC_BROWSER_TEST_F(WebRtcWebcamBrowserTest,
+                       TestAcquiringAndReacquiringWebcam) {
+  ASSERT_TRUE(embedded_test_server()->InitializeAndWaitUntilReady());
+  GURL url(embedded_test_server()->GetURL(kMainWebrtcTestHtmlPage));
+  ui_test_utils::NavigateToURL(browser(), url);
+  content::WebContents* tab =
+      browser()->tab_strip_model()->GetActiveWebContents();
+
+  if (!HasWebcamAvailableOnSystem(tab)) {
+    LOG(INFO) << "No webcam found on bot: skipping...";
+    return;
+  }
+
+  GetUserMediaWithSpecificConstraintsAndAccept(tab,
+                                               kAudioVideoCallConstraintsVGA);
+  StartDetectingVideo(tab, "local-view");
+  WaitForVideoToPlay(tab);
+  EXPECT_EQ("640x480", GetStreamSize(tab, "local-view"));
+  CloseLastLocalStream(tab);
+  GetUserMediaWithSpecificConstraintsAndAccept(tab,
+                                               kAudioVideoCallConstraintsQVGA);
+  StartDetectingVideo(tab, "local-view");
+  WaitForVideoToPlay(tab);
+  EXPECT_EQ("320x240", GetStreamSize(tab, "local-view"));
+  CloseLastLocalStream(tab);
+  GetUserMediaWithSpecificConstraintsAndAccept(tab,
+                                               kAudioVideoCallConstraints360p);
+  StartDetectingVideo(tab, "local-view");
+  WaitForVideoToPlay(tab);
+  EXPECT_EQ("640x360", GetStreamSize(tab, "local-view"));
+  CloseLastLocalStream(tab);
+  GetUserMediaWithSpecificConstraintsAndAccept(tab,
+                                               kAudioVideoCallConstraints720p);
+  StartDetectingVideo(tab, "local-view");
+  WaitForVideoToPlay(tab);
+  EXPECT_EQ("1280x720", GetStreamSize(tab, "local-view"));
+  CloseLastLocalStream(tab);
+  GetUserMediaWithSpecificConstraintsAndAccept(tab,
+                                               kAudioVideoCallConstraints1080p);
+  StartDetectingVideo(tab, "local-view");
+  WaitForVideoToPlay(tab);
+  EXPECT_EQ("1920x1080", GetStreamSize(tab, "local-view"));
+  CloseLastLocalStream(tab);
+}
diff --git a/chrome/browser/media/webrtc_browsertest_base.cc b/chrome/browser/media/webrtc_browsertest_base.cc
index 294c18f..6c1f823 100644
--- a/chrome/browser/media/webrtc_browsertest_base.cc
+++ b/chrome/browser/media/webrtc_browsertest_base.cc
@@ -5,6 +5,7 @@
 #include "chrome/browser/media/webrtc_browsertest_base.h"
 
 #include "base/lazy_instance.h"
+#include "base/strings/string_util.h"
 #include "base/strings/stringprintf.h"
 #include "chrome/browser/chrome_notification_types.h"
 #include "chrome/browser/infobars/infobar.h"
@@ -22,9 +23,21 @@
 
 const char WebRtcTestBase::kAudioVideoCallConstraints[] =
     "'{audio: true, video: true}'";
+const char WebRtcTestBase::kAudioVideoCallConstraintsQVGA[] =
+   "'{audio: true, video: {mandatory: {minWidth: 320, maxWidth: 320, "
+   " minHeight: 240, maxHeight: 240}}}'";
 const char WebRtcTestBase::kAudioVideoCallConstraints360p[] =
    "'{audio: true, video: {mandatory: {minWidth: 640, maxWidth: 640, "
    " minHeight: 360, maxHeight: 360}}}'";
+const char WebRtcTestBase::kAudioVideoCallConstraintsVGA[] =
+   "'{audio: true, video: {mandatory: {minWidth: 640, maxWidth: 640, "
+   " minHeight: 480, maxHeight: 480}}}'";
+const char WebRtcTestBase::kAudioVideoCallConstraints720p[] =
+   "'{audio: true, video: {mandatory: {minWidth: 1280, maxWidth: 1280, "
+   " minHeight: 720, maxHeight: 720}}}'";
+const char WebRtcTestBase::kAudioVideoCallConstraints1080p[] =
+    "'{audio: true, video: {mandatory: {minWidth: 1920, maxWidth: 1920, "
+    " minHeight: 1080, maxHeight: 1080}}}'";
 const char WebRtcTestBase::kAudioOnlyCallConstraints[] = "'{audio: true}'";
 const char WebRtcTestBase::kVideoOnlyCallConstraints[] = "'{video: true}'";
 const char WebRtcTestBase::kFailedWithPermissionDeniedError[] =
@@ -216,6 +229,12 @@ void WebRtcTestBase::CloseInfoBarInTab(
   infobar_removed.Wait();
 }
 
+void WebRtcTestBase::CloseLastLocalStream(
+    content::WebContents* tab_contents) const {
+  EXPECT_EQ("ok-stopped",
+            ExecuteJavascript("stopLocalStream();", tab_contents));
+}
+
 // Convenience method which executes the provided javascript in the context
 // of the provided web contents and returns what it evaluated to.
 std::string WebRtcTestBase::ExecuteJavascript(
@@ -282,3 +301,20 @@ void WebRtcTestBase::WaitForVideoToPlay(
   EXPECT_TRUE(test::PollingWaitUntil("isVideoPlaying()", "video-playing",
                                      tab_contents));
 }
+
+std::string WebRtcTestBase::GetStreamSize(
+    content::WebContents* tab_contents,
+    const std::string& video_element) const {
+  std::string javascript =
+      base::StringPrintf("getStreamSize('%s')", video_element.c_str());
+  std::string result = ExecuteJavascript(javascript, tab_contents);
+  EXPECT_TRUE(StartsWithASCII(result, "ok-", true));
+  return result.substr(3);
+}
+
+bool WebRtcTestBase::HasWebcamAvailableOnSystem(
+    content::WebContents* tab_contents) const {
+  std::string result =
+      ExecuteJavascript("HasVideoSourceOnSystem();", tab_contents);
+  return result == "has-video-source";
+}
diff --git a/chrome/browser/media/webrtc_browsertest_base.h b/chrome/browser/media/webrtc_browsertest_base.h
index 079868ce..93567e3 100644
--- a/chrome/browser/media/webrtc_browsertest_base.h
+++ b/chrome/browser/media/webrtc_browsertest_base.h
@@ -24,7 +24,11 @@ class WebRtcTestBase : public InProcessBrowserTest {
   static const char kAudioVideoCallConstraints[];
   static const char kAudioOnlyCallConstraints[];
   static const char kVideoOnlyCallConstraints[];
+  static const char kAudioVideoCallConstraintsQVGA[];
   static const char kAudioVideoCallConstraints360p[];
+  static const char kAudioVideoCallConstraintsVGA[];
+  static const char kAudioVideoCallConstraints720p[];
+  static const char kAudioVideoCallConstraints1080p[];
 
   static const char kFailedWithPermissionDeniedError[];
   static const char kFailedWithPermissionDismissedError[];
@@ -64,6 +68,9 @@ class WebRtcTestBase : public InProcessBrowserTest {
   // means and accepts the user media request.
   content::WebContents* OpenPageAndAcceptUserMedia(const GURL& url) const;
 
+  // Closes the last local stream acquired by the GetUserMedia* methods.
+  void CloseLastLocalStream(content::WebContents* tab_contents) const;
+
   void ConnectToPeerConnectionServer(const std::string& peer_name,
                                      content::WebContents* tab_contents) const;
   std::string ExecuteJavascript(const std::string& javascript,
@@ -88,6 +95,13 @@ class WebRtcTestBase : public InProcessBrowserTest {
                            const std::string& video_element) const;
   void WaitForVideoToPlay(content::WebContents* tab_contents) const;
 
+  // Returns the stream size as a string on the format <width>x<height>.
+  std::string GetStreamSize(content::WebContents* tab_contents,
+                            const std::string& video_element) const;
+
+  // Methods to check what devices we have on the system.
+  bool HasWebcamAvailableOnSystem(content::WebContents* tab_contents) const;
+
  private:
   void CloseInfoBarInTab(content::WebContents* tab_contents,
                          InfoBar* infobar) const;