Added a bit flip fuzz test to the voice engine.

Extracted encryption classes to a new test library.

BUG=
TEST=

Review URL: https://webrtc-codereview.appspot.com/564009

git-svn-id: http://webrtc.googlecode.com/svn/trunk@2256 4adac7df-926f-26a2-2b94-8c16560cd09d

src/test/libtest/helpers/bit_flip_encryption.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "video_engine/test/libvietest/include/bit_flip_encryption.h"
+#include "test/libtest/include/bit_flip_encryption.h"
 
 #include <cstdlib>
 

src/test/libtest/helpers/random_encryption.cc

@@ -8,7 +8,7 @@
  *  be found in the AUTHORS file in the root of the source tree.
  */
 
-#include "video_engine/test/libvietest/include/random_encryption.h"
+#include "test/libtest/include/random_encryption.h"
 
 #include <algorithm>
 #include <cstdlib>

src/test/libtest/include/bit_flip_encryption.h

@@ -11,7 +11,7 @@
 #ifndef SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_BIT_FLIP_ENCRYPTION_H_
 #define SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_BIT_FLIP_ENCRYPTION_H_
 
-#include "video_engine/include/vie_encryption.h"
+#include "common_types.h"
 
 // This encryption scheme will randomly flip bits every now and then in the
 // input data.

src/test/libtest/include/random_encryption.h

@@ -11,7 +11,7 @@
 #ifndef SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_RANDOM_ENCRYPTION_H_
 #define SRC_VIDEO_ENGINE_TEST_AUTO_TEST_HELPERS_RANDOM_ENCRYPTION_H_
 
-#include "video_engine/include/vie_encryption.h"
+#include "common_types.h"
 
 // These algorithms attempt to create an uncrackable encryption
 // scheme by completely disregarding the input data.

src/test/libtest/libtest.gyp

@@ -0,0 +1,26 @@
+# Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+#
+# Use of this source code is governed by a BSD-style license
+# that can be found in the LICENSE file in the root of the source
+# tree. An additional intellectual property rights grant can be found
+# in the file PATENTS.  All contributing project authors may
+# be found in the AUTHORS file in the root of the source tree.
+{
+  'includes': [
+    '../../build/common.gypi'
+  ],
+  'targets': [
+    {
+      'target_name': 'libtest',
+      'type': '<(library)',
+      'sources': [
+        # Helper classes
+        'include/bit_flip_encryption.h',
+        'include/random_encryption.h',
+
+        'helpers/bit_flip_encryption.cc',
+        'helpers/random_encryption.cc',
+      ],
+    },
+  ],
+}

src/video_engine/test/auto_test/automated/vie_rtp_fuzz_test.cc

@@ -12,12 +12,12 @@
 
 #include "gtest/gtest.h"
 #include "gflags/gflags.h"
+#include "test/libtest/include/bit_flip_encryption.h"
+#include "test/libtest/include/random_encryption.h"
 #include "video_engine/test/auto_test/automated/two_windows_fixture.h"
 #include "video_engine/test/auto_test/interface/vie_window_creator.h"
 #include "video_engine/test/auto_test/interface/vie_autotest_window_manager_interface.h"
 #include "video_engine/test/auto_test/primitives/general_primitives.h"
-#include "video_engine/test/libvietest/include/bit_flip_encryption.h"
-#include "video_engine/test/libvietest/include/random_encryption.h"
 #include "video_engine/test/libvietest/include/tb_capture_device.h"
 #include "video_engine/test/libvietest/include/tb_interfaces.h"
 #include "video_engine/test/libvietest/include/tb_video_channel.h"

src/video_engine/test/auto_test/vie_auto_test.gypi

@@ -20,6 +20,7 @@
         '<(webrtc_root)/../third_party/google-gflags/google-gflags.gyp:google-gflags',
         '<(webrtc_root)/../test/metrics.gyp:metrics',
         '<(webrtc_root)/../test/test.gyp:test_support',
+        '<(webrtc_root)/test/libtest/libtest.gyp:libtest',
         'video_engine_core',
         'libvietest',
       ],

src/video_engine/test/libvietest/libvietest.gypi

@@ -27,14 +27,10 @@
       ],
       'sources': [
         # Helper classes
-        'include/bit_flip_encryption.h',
-        'include/random_encryption.h',
         'include/vie_fake_camera.h',
         'include/vie_file_capture_device.h',
         'include/vie_to_file_renderer.h',
 
-        'helpers/bit_flip_encryption.cc',
-        'helpers/random_encryption.cc',
         'helpers/vie_fake_camera.cc',
         'helpers/vie_file_capture_device.cc',
         'helpers/vie_to_file_renderer.cc',

src/voice_engine/main/test/auto_test/fuzz/rtp_fuzz_test.cc

@@ -0,0 +1,48 @@
+/*
+ *  Copyright (c) 2012 The WebRTC project authors. All Rights Reserved.
+ *
+ *  Use of this source code is governed by a BSD-style license
+ *  that can be found in the LICENSE file in the root of the source
+ *  tree. An additional intellectual property rights grant can be found
+ *  in the file PATENTS.  All contributing project authors may
+ *  be found in the AUTHORS file in the root of the source tree.
+ */
+
+#include <ctime>
+
+#include "test/libtest/include/bit_flip_encryption.h"
+#include "voice_engine/main/test/auto_test/fixtures/after_streaming_fixture.h"
+
+class RtpFuzzTest : public AfterStreamingFixture {
+ protected:
+  void BitFlipFuzzTest(float flip_probability) {
+    BitFlipEncryption bit_flip_encryption(std::time(NULL), flip_probability);
+
+    TEST_LOG("Starting to flip bits in RTP/RTCP packets.\n");
+    voe_encrypt_->RegisterExternalEncryption(channel_, bit_flip_encryption);
+
+    Sleep(5000);
+
+    voe_encrypt_->DeRegisterExternalEncryption(channel_);
+
+    TEST_LOG("Flipped %d bits. Back to normal.\n",
+             static_cast<int>(bit_flip_encryption.flip_count()));
+    Sleep(2000);
+  }
+};
+
+TEST_F(RtpFuzzTest, VoiceEngineDealsWithASmallNumberOfTamperedRtpPackets) {
+  BitFlipFuzzTest(0.00005f);
+}
+
+TEST_F(RtpFuzzTest, VoiceEngineDealsWithAMediumNumberOfTamperedRtpPackets) {
+  BitFlipFuzzTest(0.0005f);
+}
+
+TEST_F(RtpFuzzTest, VoiceEngineDealsWithALargeNumberOfTamperedRtpPackets) {
+  BitFlipFuzzTest(0.05f);
+}
+
+TEST_F(RtpFuzzTest, VoiceEngineDealsWithAHugeNumberOfTamperedRtpPackets) {
+  BitFlipFuzzTest(0.5f);
+}

src/voice_engine/main/test/voice_engine_tests.gypi

@@ -18,6 +18,7 @@
         '<(webrtc_root)/../test/test.gyp:test_support',
         '<(webrtc_root)/../testing/gtest.gyp:gtest',
         '<(webrtc_root)/../testing/gmock.gyp:gmock',
+        '<(webrtc_root)/test/libtest/libtest.gyp:libtest',
       ],
       'include_dirs': [
         'auto_test',
@@ -38,6 +39,7 @@
         'auto_test/fixtures/after_streaming_fixture.h',
         'auto_test/fixtures/before_initialization_fixture.cc',
         'auto_test/fixtures/before_initialization_fixture.h',
+        'auto_test/fuzz/rtp_fuzz_test.cc',
         'auto_test/standard/audio_processing_test.cc',
         'auto_test/standard/call_report_test.cc',
         'auto_test/standard/codec_before_streaming_test.cc',