Injectable audio encoders: WebRtcVoiceEngine and company

webrtc/modules/audio_coding/codecs/mock/mock_audio_encoder_factory.h

+/*
+ *  Copyright (c) 2017 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.
+ */
+
+#ifndef WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_FACTORY_H_
+#define WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_FACTORY_H_
+
+#include <memory>
+#include <vector>
+
+#include "webrtc/base/scoped_ref_ptr.h"
+#include "webrtc/modules/audio_coding/codecs/audio_encoder_factory.h"
+#include "webrtc/test/gmock.h"
+
+namespace webrtc {
+
+class MockAudioEncoderFactory : public AudioEncoderFactory {
+ public:
+  MOCK_METHOD0(GetSupportedEncoders, std::vector<AudioCodecSpec>());
+  MOCK_METHOD1(QueryAudioEncoder,
+               rtc::Optional<AudioCodecInfo>(const SdpAudioFormat& format));
+
+  std::unique_ptr<AudioEncoder> MakeAudioEncoder(int payload_type,
+                                                 const SdpAudioFormat& format) {
+    std::unique_ptr<AudioEncoder> return_value;
+    MakeAudioEncoderMock(payload_type, format, &return_value);
+    return return_value;
+  }
+  MOCK_METHOD3(MakeAudioEncoderMock,
+               void(int payload_type,
+                    const SdpAudioFormat& format,
+                    std::unique_ptr<AudioEncoder>* return_value));
+
+  // Creates a MockAudioEncoderFactory with no formats and that may not be
+  // invoked to create a codec - useful for initializing a voice engine, for
+  // example.
+  static rtc::scoped_refptr<webrtc::MockAudioEncoderFactory>
+  CreateUnusedFactory() {
+    using testing::_;
+    using testing::AnyNumber;
+    using testing::Return;
+
+    rtc::scoped_refptr<webrtc::MockAudioEncoderFactory> factory =
+        new rtc::RefCountedObject<webrtc::MockAudioEncoderFactory>;
+    ON_CALL(*factory.get(), GetSupportedEncoders())
+        .WillByDefault(Return(std::vector<webrtc::AudioCodecSpec>()));
+    ON_CALL(*factory.get(), QueryAudioEncoder(_))
+        .WillByDefault(Return(rtc::Optional<AudioCodecInfo>()));
+
+    EXPECT_CALL(*factory.get(), GetSupportedEncoders()).Times(AnyNumber());
+    EXPECT_CALL(*factory.get(), QueryAudioEncoder(_)).Times(AnyNumber());
+    EXPECT_CALL(*factory.get(), MakeAudioEncoderMock(_, _, _)).Times(0);
+    return factory;
+  }
+
+  // Creates a MockAudioEncoderFactory with no formats that may be invoked to
+  // create a codec any number of times. It will, though, return nullptr on each
+  // call, since it supports no codecs.
+  static rtc::scoped_refptr<webrtc::MockAudioEncoderFactory>
+  CreateEmptyFactory() {
+    using testing::_;
+    using testing::AnyNumber;
+    using testing::Return;
+    using testing::SetArgPointee;
+
+    rtc::scoped_refptr<webrtc::MockAudioEncoderFactory> factory =
+        new rtc::RefCountedObject<webrtc::MockAudioEncoderFactory>;
+    ON_CALL(*factory.get(), GetSupportedEncoders())
+        .WillByDefault(Return(std::vector<webrtc::AudioCodecSpec>()));
+    ON_CALL(*factory.get(), QueryAudioEncoder(_))
+        .WillByDefault(Return(rtc::Optional<AudioCodecInfo>()));
+    ON_CALL(*factory.get(), MakeAudioEncoderMock(_, _, _))
+        .WillByDefault(SetArgPointee<2>(nullptr));
+
+    EXPECT_CALL(*factory.get(), GetSupportedEncoders()).Times(AnyNumber());
+    EXPECT_CALL(*factory.get(), QueryAudioEncoder(_)).Times(AnyNumber());
+    EXPECT_CALL(*factory.get(), MakeAudioEncoderMock(_, _, _))
+        .Times(AnyNumber());
+    return factory;
+  }
+};
+
+}  // namespace webrtc
+
+#endif  // WEBRTC_MODULES_AUDIO_CODING_CODECS_MOCK_MOCK_AUDIO_ENCODER_FACTORY_H_