C++ GMock-用另一个实现模拟抽象类

我正在尝试模拟

IAudioMeterInformation

windowsapi（我只需要GetPeakValue（）方法）

我遇到了一个错误：

错误C2259'AudioMeterInformationMock'：无法实例化抽象类

因此，我尝试在模拟中创建

GetPeakValue（）

的自定义实现：

#include <gmock/gmock.h>

class AudioMeterInformationMock : public IAudioMeterInformation
{
public:
   MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetPeakValueMod, HRESULT(float *pfPeak));

   virtual HRESULT STDMETHODCALLTYPE GetPeakValue(float *pfPeak)
   {
    *pfPeak = 1.0;
    GetPeakValueMod(pfPeak);
    return S_OK;
   }
};

---

它现在按预期工作。

更新：

事实证明，我必须“实现”所有其他纯虚拟函数才能使其工作

    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetPeakValueMod, HRESULT(float *pfPeak));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetMeteringChannelCount, HRESULT(_Out_  UINT *pnChannelCount));
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, GetChannelsPeakValues, HRESULT(UINT32 u32ChannelCount, float *afPeakValues));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryHardwareSupport, HRESULT(_Out_  DWORD *pdwHardwareSupportMask));

And IUnknown methods:
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, AddRef, ULONG()); \
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, Release, ULONG()); \
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryInterface, HRESULT(const IID&, void**));

    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetPeakValueMod, HRESULT(float *pfPeak));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetMeteringChannelCount, HRESULT(_Out_  UINT *pnChannelCount));
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, GetChannelsPeakValues, HRESULT(UINT32 u32ChannelCount, float *afPeakValues));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryHardwareSupport, HRESULT(_Out_  DWORD *pdwHardwareSupportMask));

And IUnknown methods:
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, AddRef, ULONG()); \
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, Release, ULONG()); \
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryInterface, HRESULT(const IID&, void**));

---

它现在按预期工作。

更新：

事实证明，我必须“实现”所有其他纯虚拟函数才能使其工作

    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetPeakValueMod, HRESULT(float *pfPeak));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetMeteringChannelCount, HRESULT(_Out_  UINT *pnChannelCount));
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, GetChannelsPeakValues, HRESULT(UINT32 u32ChannelCount, float *afPeakValues));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryHardwareSupport, HRESULT(_Out_  DWORD *pdwHardwareSupportMask));

And IUnknown methods:
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, AddRef, ULONG()); \
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, Release, ULONG()); \
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryInterface, HRESULT(const IID&, void**));

    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetPeakValueMod, HRESULT(float *pfPeak));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, GetMeteringChannelCount, HRESULT(_Out_  UINT *pnChannelCount));
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, GetChannelsPeakValues, HRESULT(UINT32 u32ChannelCount, float *afPeakValues));
    MOCK_METHOD1_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryHardwareSupport, HRESULT(_Out_  DWORD *pdwHardwareSupportMask));

And IUnknown methods:
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, AddRef, ULONG()); \
    MOCK_METHOD0_WITH_CALLTYPE(STDMETHODCALLTYPE, Release, ULONG()); \
    MOCK_METHOD2_WITH_CALLTYPE(STDMETHODCALLTYPE, QueryInterface, HRESULT(const IID&, void**));

---

它现在正按预期工作。

不要添加已解决或类似的答案，而是在2天内发布答案并标记为正确，这是操作系统注意问题已解决的方式。不要添加已解决或类似的答案，而是在2天内发布答案并标记为正确，这是操作系统注意问题已解决的方式