Add the whispernet proxy.

chrome/browser/copresence/chrome_whispernet_client_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 "chrome/browser/copresence/chrome_whispernet_client.h"
+
+#include <cstdlib>
+#include <string>
+
+#include "base/bind.h"
+#include "base/memory/scoped_ptr.h"
+#include "base/run_loop.h"
+#include "chrome/browser/extensions/api/copresence_private/copresence_private_api.h"
+#include "chrome/browser/extensions/extension_browsertest.h"
+#include "chrome/browser/profiles/profile.h"
+#include "chrome/browser/ui/browser.h"
+#include "chrome/test/base/in_process_browser_test.h"
+#include "media/base/audio_bus.h"
+
+namespace {
+
+// Copied from src/components/copresence/mediums/audio/audio_recorder.cc
+std::string AudioBusToString(scoped_refptr<media::AudioBusRefCounted> source) {
+  std::string buffer;
+  buffer.resize(source->frames() * source->channels() * sizeof(float));
+  float* buffer_view = reinterpret_cast<float*>(string_as_array(&buffer));

[xiyuan, 2014/07/31 19:22:22]

nit: #include "base/stl_util.h" for string_as_array

[rkc, 2014/07/31 23:12:52]

Done.

+
+  const int channels = source->channels();
+  for (int ch = 0; ch < channels; ++ch) {
+    for (int si = 0, di = ch; si < source->frames(); ++si, di += channels)
+      buffer_view[di] = source->channel(ch)[si];
+  }
+
+  return buffer;
+}
+
+}  // namespace
+
+class ChromeWhispernetClientTest : public ExtensionBrowserTest {
+ public:
+  ChromeWhispernetClientTest() : initialized_(false) {}
+
+  virtual ~ChromeWhispernetClientTest() {
+    if (client_)
+      extensions::SetWhispernetClientForTesting(NULL);
+  }
+
+  void InitializeWhispernet() {
+    run_loop_.reset(new base::RunLoop());
+    client_.reset(new ChromeWhispernetClient(browser()->profile()));
+    extensions::SetWhispernetClientForTesting(client_.get());
+
+    client_->Initialize(base::Bind(&ChromeWhispernetClientTest::InitCallback,
+                                   base::Unretained(this)));
+    run_loop_->Run();
+
+    EXPECT_TRUE(initialized_);
+  }
+
+  void EncodeTokenAndSaveSamples() {
+    ASSERT_TRUE(client_);
+
+    // This is the base64 encoding for 000000.
+    const std::string kZeroToken = "MDAwMDAw";
+
+    run_loop_.reset(new base::RunLoop());
+    client_->RegisterSamplesCallback(base::Bind(
+        &ChromeWhispernetClientTest::SamplesCallback, base::Unretained(this)));
+    expected_token_ = kZeroToken;
+
+    client_->EncodeToken(kZeroToken);
+    run_loop_->Run();
+
+    EXPECT_GT(saved_samples_->frames(), 0);
+  }
+
+  void DecodeSamplesAndVerifyToken() {
+    ASSERT_TRUE(client_);
+
+    const std::string kZeroToken = "MDAwMDAw";
+
+    run_loop_.reset(new base::RunLoop());
+    client_->RegisterTokensCallback(base::Bind(
+        &ChromeWhispernetClientTest::TokensCallback, base::Unretained(this)));
+    expected_token_ = kZeroToken;
+
+    ASSERT_GT(saved_samples_->frames(), 0);
+
+    // Convert our single channel samples to two channel. Decode samples
+    // expects 2 channel data.
+    scoped_refptr<media::AudioBusRefCounted> samples_bus =
+        media::AudioBusRefCounted::Create(2, saved_samples_->frames());
+    memcpy(samples_bus->channel(0),
+           saved_samples_->channel(0),
+           sizeof(float) * saved_samples_->frames());
+    memcpy(samples_bus->channel(1),
+           saved_samples_->channel(0),
+           sizeof(float) * saved_samples_->frames());
+
+    client_->DecodeSamples(AudioBusToString(samples_bus));
+    run_loop_->Run();
+  }
+
+  void DetectBroadcast() {
+    ASSERT_TRUE(client_);
+
+    run_loop_.reset(new base::RunLoop());
+    client_->RegisterDetectBroadcastCallback(
+        base::Bind(&ChromeWhispernetClientTest::DetectBroadcastCallback,
+                   base::Unretained(this)));
+    client_->DetectBroadcast();
+    run_loop_->Run();
+  }
+
+ protected:
+  void InitCallback(bool success) {
+    EXPECT_TRUE(success);
+    initialized_ = true;
+    ASSERT_TRUE(run_loop_);
+    run_loop_->Quit();
+  }
+
+  void SamplesCallback(
+      const std::string& token,
+      const scoped_refptr<media::AudioBusRefCounted>& samples) {
+    EXPECT_EQ(expected_token_, token);
+    saved_samples_ = samples;
+    ASSERT_TRUE(run_loop_);
+    run_loop_->Quit();
+  }
+
+  void TokensCallback(const std::vector<std::string>& tokens) {
+    ASSERT_TRUE(run_loop_);
+    run_loop_->Quit();
+
+    EXPECT_EQ(expected_token_, tokens[0]);
+  }
+
+  void DetectBroadcastCallback(bool success) {
+    EXPECT_TRUE(success);
+    ASSERT_TRUE(run_loop_);
+    run_loop_->Quit();
+  }
+

[xiyuan, 2014/07/31 19:22:22]

nit: private:

[rkc, 2014/07/31 23:12:52]

Done.

+  scoped_ptr<base::RunLoop> run_loop_;
+  scoped_ptr<ChromeWhispernetClient> client_;
+
+  std::string expected_token_;
+  scoped_refptr<media::AudioBusRefCounted> saved_samples_;
+
+  bool initialized_;
+};

[xiyuan, 2014/07/31 19:22:22]

nit: DISALLOW_COPY_ASSIGN

[rkc, 2014/07/31 23:12:52]

Done.

+
+IN_PROC_BROWSER_TEST_F(ChromeWhispernetClientTest, Initialize) {
+  InitializeWhispernet();
+}
+
+IN_PROC_BROWSER_TEST_F(ChromeWhispernetClientTest, EncodeToken) {
+  InitializeWhispernet();
+  EncodeTokenAndSaveSamples();
+}
+
+IN_PROC_BROWSER_TEST_F(ChromeWhispernetClientTest, DecodeSamples) {
+  InitializeWhispernet();
+  EncodeTokenAndSaveSamples();
+  DecodeSamplesAndVerifyToken();
+}
+
+IN_PROC_BROWSER_TEST_F(ChromeWhispernetClientTest, DetectBroadcast) {
+  InitializeWhispernet();
+  EncodeTokenAndSaveSamples();
+  DecodeSamplesAndVerifyToken();
+  DetectBroadcast();
+}