iOS: Add resource files for tests and implement OutputPath

webrtc/modules/audio_coding/neteq/audio_decoder_unittest.cc

 /*
  *  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.
  */
 
@@ skipping 78 matching lines @@
     squared_sum += (input[n] - output[channels * n + delay]) *
                    (input[n] - output[channels * n + delay]);
   }
   return squared_sum / (num_samples - delay);
 }
 }  // namespace
 
 class AudioDecoderTest : public ::testing::Test {
  protected:
   AudioDecoderTest()
-      : input_audio_(webrtc::test::ProjectRootPath() +
-                         "resources/audio_coding/testfile32kHz.pcm",
-                     32000),
+      : input_audio_(
+            webrtc::test::ResourcePath("audio_coding/testfile32kHz", "pcm"),
+            32000),
         codec_input_rate_hz_(32000),  // Legacy default value.
         encoded_(NULL),
         frame_size_(0),
         data_length_(0),
         encoded_bytes_(0),
         channels_(1),
         payload_type_(17),
         decoder_(NULL) {}
 
   virtual ~AudioDecoderTest() {}
@@ skipping 630 matching lines @@
   EXPECT_TRUE(CodecSupported(NetEqDecoder::kDecoderCNGnb));
   EXPECT_TRUE(CodecSupported(NetEqDecoder::kDecoderCNGwb));
   EXPECT_TRUE(CodecSupported(NetEqDecoder::kDecoderCNGswb32kHz));
   EXPECT_TRUE(CodecSupported(NetEqDecoder::kDecoderCNGswb48kHz));
   EXPECT_TRUE(CodecSupported(NetEqDecoder::kDecoderArbitrary));
   EXPECT_EQ(has_opus, CodecSupported(NetEqDecoder::kDecoderOpus));
   EXPECT_EQ(has_opus, CodecSupported(NetEqDecoder::kDecoderOpus_2ch));
 }
 
 }  // namespace webrtc