Add browser test for getusermedia and unavailable audio device.

content/browser/webrtc/webrtc_getusermedia_browsertest.cc

 // 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 <stddef.h>
 
 #include "base/command_line.h"
 #include "base/json/json_reader.h"
 #include "base/memory/ref_counted_memory.h"
 #include "base/strings/stringprintf.h"
 #include "base/test/trace_event_analyzer.h"
 #include "base/threading/thread_restrictions.h"
 #include "base/trace_event/trace_event_impl.h"
 #include "base/values.h"
 #include "build/build_config.h"
 #include "content/browser/browser_main_loop.h"
 #include "content/browser/renderer_host/media/media_stream_manager.h"
 #include "content/browser/web_contents/web_contents_impl.h"
 #include "content/browser/webrtc/webrtc_content_browsertest_base.h"
 #include "content/browser/webrtc/webrtc_internals.h"
 #include "content/public/common/content_switches.h"
 #include "content/public/test/browser_test_utils.h"
 #include "content/public/test/content_browser_test_utils.h"
 #include "content/public/test/test_utils.h"
 #include "content/shell/browser/shell.h"
+#include "media/audio/audio_manager.h"
 #include "net/test/embedded_test_server/embedded_test_server.h"
 #include "testing/perf/perf_test.h"
 
 #if defined(OS_WIN)
 #include "base/win/windows_version.h"
 #endif
 
 using trace_analyzer::TraceAnalyzer;
 using trace_analyzer::Query;
 using trace_analyzer::TraceEventVector;
@@ skipping 536 matching lines @@
                                               large_value,
                                               large_value,
                                               large_value,
                                               large_value);
   NavigateToURL(shell(), url);
 
   EXPECT_EQ("ConstraintNotSatisfiedError",
             ExecuteJavascriptAndReturnResult(call));
 }
 
+#if defined(OS_ANDROID)
+// Disabled until http://crbug.com/679302 is fixed.
+#define MAYBE_GetUserMediaFailToAccessAudioDevice \
+    DISABLED_GetUserMediaFailToAccessAudioDevice
+#else
+#define MAYBE_GetUserMediaFailToAccessAudioDevice \
+    GetUserMediaFailToAccessAudioDevice
+#endif
+IN_PROC_BROWSER_TEST_F(WebRtcGetUserMediaBrowserTest,
+                       MAYBE_GetUserMediaFailToAccessAudioDevice) {
+  ASSERT_TRUE(embedded_test_server()->Start());
+
+  GURL url(embedded_test_server()->GetURL("/media/getusermedia.html"));
+  NavigateToURL(shell(), url);
+
+  media::AudioManager::Get()->SetMaxStreamCountForTesting(0, 0);

[henrika (OOO until Aug 14), 2017/01/16 09:13:27]

Perhaps a comment explaining why we know the test should fail after calling this
method. Just an idea.

[tommi (sloooow) - chröme, 2017/01/16 12:37:01]

Done.

+
+  const std::string call = base::StringPrintf(
+      "%s({video: false, audio: true});", kGetUserMediaAndExpectFailure);
+  EXPECT_EQ("TrackStartError",
+            ExecuteJavascriptAndReturnResult(call));
+}
+
 // This test makes two getUserMedia requests, one with impossible constraints
 // that should trigger an error, and one with valid constraints. The test
 // verifies getUserMedia can succeed after being given impossible constraints.
 IN_PROC_BROWSER_TEST_F(WebRtcGetUserMediaBrowserTest,
                        TwoGetUserMediaAndCheckCallbackAfterFailure) {
   ASSERT_TRUE(embedded_test_server()->Start());
 
   GURL url(embedded_test_server()->GetURL("/media/getusermedia.html"));
   NavigateToURL(shell(), url);
 
@@ skipping 165 matching lines @@
       base::Bind(&VerifyDisableLocalEcho, true));
   call = GenerateGetUserMediaWithDisableLocalEcho(
       "getUserMediaAndExpectSuccess", "true");
   ExecuteJavascriptAndWaitForOk(call);
 
   manager->SetGenerateStreamCallbackForTesting(
       MediaStreamManager::GenerateStreamTestCallback());
 }
 
 }  // namespace content