StftFrameProviderTests.cpp

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/*  SPDX-License-Identifier: GPL-2.0-or-later */
/*!********************************************************************
 
  Audacity: A Digital Audio Editor
 
  StftFrameProviderTests.cpp
 
  Matthieu Hodgkinson
 
**********************************************************************/
#include "MirTypes.h"
#include "MirUtils.h"
#include "StftFrameProvider.h"
 
#include <catch2/catch.hpp>
 
namespace MIR
{
namespace
{
class TestMirAudioReader : public MirAudioReader
{
public:
   const long long numSamples;
 
   TestMirAudioReader(long long numSamples)
       : numSamples { numSamples }
   {
   }
   double GetSampleRate() const override
   {
      return 44100;
   };
   long long GetNumSamples() const override
   {
      return numSamples;
   };
   void
   ReadFloats(float* buffer, long long where, size_t numFrames) const override
   {
      REQUIRE(where >= 0);
      REQUIRE(where + numFrames <= numSamples);
   };
};
} // namespace
TEST_CASE("StftFrameProvider")
{
   SECTION("handles empty files")
   {
      StftFrameProvider sut { TestMirAudioReader { 0 } };
      PffftFloatVector frame;
      REQUIRE(!sut.GetNextFrame(frame));
   }
   SECTION("handles very short files")
   {
      StftFrameProvider sut { TestMirAudioReader { 1 } };
      PffftFloatVector frame;
      REQUIRE(!sut.GetNextFrame(frame));
   }
   SECTION("has power-of-two number of frames")
   {
      StftFrameProvider sut { TestMirAudioReader { 123456 } };
      REQUIRE(IsPowOfTwo(sut.GetNumFrames()));
   }
   SECTION("respects MirAudioReader boundaries")
   {
      TestMirAudioReader reader { 123456 };
      StftFrameProvider sut { reader };
      PffftFloatVector frame;
      while (sut.GetNextFrame(frame))
         ;
   }
}
} // namespace MIR