Encrypted Media: DecryptingXxx::SetDecryptor() accepts NULL decryptor.

media/filters/decrypting_demuxer_stream_unittest.cc

 // Copyright (c) 2012 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 <string>
 #include <vector>
 
 #include "base/bind.h"
 #include "base/callback_helpers.h"
 #include "base/message_loop.h"
@@ skipping 240 matching lines @@
   EXPECT_EQ(input_config.visible_rect(), output_config.visible_rect());
   EXPECT_EQ(input_config.natural_size(), output_config.natural_size());
   ASSERT_EQ(input_config.extra_data_size(), output_config.extra_data_size());
   if (input_config.extra_data_size() > 0) {
     EXPECT_FALSE(output_config.extra_data());
     EXPECT_EQ(0, memcmp(output_config.extra_data(), input_config.extra_data(),
                         input_config.extra_data_size()));
   }
 }
 
+TEST_F(DecryptingDemuxerStreamTest, Initialize_NullDecryptor) {
+  EXPECT_CALL(*this, RequestDecryptorNotification(_))
+      .WillRepeatedly(RunCallbackIfNotNull(static_cast<Decryptor*>(NULL)));
+
+  AudioDecoderConfig input_config(kCodecVorbis, kSampleFormatPlanarF32,
+                                  CHANNEL_LAYOUT_STEREO, 44100, NULL, 0, true);
+  InitializeAudioAndExpectStatus(input_config, DECODER_ERROR_NOT_SUPPORTED);
+}
+
 // Test normal read case.
 TEST_F(DecryptingDemuxerStreamTest, Read_Normal) {
   Initialize();
   EnterNormalReadingState();
 }
 
 // Test the case where the decryptor returns error during read.
 TEST_F(DecryptingDemuxerStreamTest, Read_DecryptError) {
   Initialize();
 
@@ skipping 138 matching lines @@
   input_audio_stream_->set_audio_decoder_config(new_config);
 
   EXPECT_CALL(*input_audio_stream_, Read(_))
       .WillOnce(RunCallback<0>(DemuxerStream::kConfigChanged,
                                scoped_refptr<DecoderBuffer>()));
 
   ReadAndExpectBufferReadyWith(DemuxerStream::kConfigChanged, NULL);
 }
 
 }  // namespace media