text: // SPDX-License-Identifier: BSD-2-Clause
  
  // This code is part of the sfizz library and is licensed under a BSD 2-clause
  // license. You should have receive a LICENSE.md file along with the code.
  // If not, contact the sfizz maintainers at https://github.com/sfztools/sfizz
  
  #include "TestHelpers.h"
  #include "sfizz/Synth.h"
  #include "sfizz/Voice.h"
  #include "sfizz/SfzHelpers.h"
  #include "sfizz/parser/Parser.h"
  #include "sfizz/modulations/ModId.h"
  #include "sfizz/modulations/ModKey.h"
  #include "catch2/catch.hpp"
  #include "ghc/fs_std.hpp"
  #if defined(__APPLE__)
  #include <unistd.h> // pathconf
  #endif
  using namespace Catch::literals;
  using namespace sfz::literals;
  using namespace sfz;
  
  TEST_CASE("[Files] Single region (regions_one.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Regions/regions_one.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
  }
  
  
  TEST_CASE("[Files] Multiple regions (regions_many.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Regions/regions_many.sfz");
      REQUIRE(synth.getNumRegions() == 3);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy.1.wav");
      REQUIRE(synth.getRegionView(2)->sampleId->filename() == "dummy.2.wav");
  }
  
  TEST_CASE("[Files] Basic opcodes (regions_opcodes.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Regions/regions_opcodes.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->keyRange == Range<uint8_t>(2, 14));
  }
  
  TEST_CASE("[Files] Underscore opcodes (underscore_opcodes.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Regions/underscore_opcodes.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->loopMode == LoopMode::loop_sustain);
  }
  
  TEST_CASE("[Files] (regions_bad.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Regions/regions_bad.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy.wav");
  }
  
  TEST_CASE("[Files] Local include")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/root_local.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
  }
  
  TEST_CASE("[Files] Multiple includes")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/multiple_includes.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy2.wav");
  }
  
  TEST_CASE("[Files] Multiple includes with comments")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/multiple_includes_with_comments.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy2.wav");
  }
  
  TEST_CASE("[Files] Subdir include")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/root_subdir.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy_subdir.wav");
  }
  
  TEST_CASE("[Files] Subdir include Win")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/root_subdir_win.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy_subdir.wav");
  }
  
  TEST_CASE("[Files] Recursive include (with include guard)")
  {
      Synth synth;
      Parser& parser = synth.getParser();
      parser.setRecursiveIncludeGuardEnabled(true);
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/root_recursive.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy_recursive2.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy_recursive1.wav");
  }
  
  TEST_CASE("[Files] Include loops (with include guard)")
  {
      Synth synth;
      Parser& parser = synth.getParser();
      parser.setRecursiveIncludeGuardEnabled(true);
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/Includes/root_loop.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy_loop2.wav");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "dummy_loop1.wav");
  }
  
  TEST_CASE("[Files] Define test")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/defines.sfz");
      REQUIRE(synth.getNumRegions() == 4);
      REQUIRE(synth.getRegionView(0)->keyRange == Range<uint8_t>(36, 36));
      REQUIRE(synth.getRegionView(1)->keyRange == Range<uint8_t>(38, 38));
      REQUIRE(synth.getRegionView(2)->keyRange == Range<uint8_t>(42, 42));
      REQUIRE(synth.getRegionView(3)->volume == -12.0f);
  }
  
  TEST_CASE("[Files] Group from AVL")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/groups_avl.sfz");
      REQUIRE(synth.getNumRegions() == 5);
      for (int i = 0; i < synth.getNumRegions(); ++i) {
          REQUIRE(synth.getRegionView(i)->volume == 6.0f);
          REQUIRE(synth.getRegionView(i)->keyRange == Range<uint8_t>(36, 36));
      }
  
      almostEqualRanges(synth.getRegionView(0)->velocityRange, { 1_norm, std::nextafter(27_norm, 0.0f) });
      almostEqualRanges(synth.getRegionView(1)->velocityRange, { 27_norm, std::nextafter(53_norm, 0.0f) });
      almostEqualRanges(synth.getRegionView(2)->velocityRange, { 53_norm, std::nextafter(78_norm, 0.0f) });
      almostEqualRanges(synth.getRegionView(3)->velocityRange, { 78_norm, std::nextafter(103_norm, 0.0f) });
      almostEqualRanges(synth.getRegionView(4)->velocityRange, { 103_norm, 127_norm });
  }
  
  TEST_CASE("[Files] Full hierarchy")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/basic_hierarchy.sfz");
      REQUIRE(synth.getNumRegions() == 8);
      for (int i = 0; i < synth.getNumRegions(); ++i) {
          REQUIRE(synth.getRegionView(i)->width == 0.4_a);
      }
      REQUIRE(synth.getRegionView(0)->pan == 0.3_a);
      REQUIRE(synth.getRegionView(0)->delay == 67);
      REQUIRE(synth.getRegionView(0)->keyRange == Range<uint8_t>(60, 60));
  
      REQUIRE(synth.getRegionView(1)->pan == 0.3_a);
      REQUIRE(synth.getRegionView(1)->delay == 67);
      REQUIRE(synth.getRegionView(1)->keyRange == Range<uint8_t>(61, 61));
  
      REQUIRE(synth.getRegionView(2)->pan == 0.3_a);
      REQUIRE(synth.getRegionView(2)->delay == 56);
      REQUIRE(synth.getRegionView(2)->keyRange == Range<uint8_t>(50, 50));
  
      REQUIRE(synth.getRegionView(3)->pan == 0.3_a);
      REQUIRE(synth.getRegionView(3)->delay == 56);
      REQUIRE(synth.getRegionView(3)->keyRange == Range<uint8_t>(51, 51));
  
      REQUIRE(synth.getRegionView(4)->pan == -0.1_a);
      REQUIRE(synth.getRegionView(4)->delay == 47);
      REQUIRE(synth.getRegionView(4)->keyRange == Range<uint8_t>(40, 40));
  
      REQUIRE(synth.getRegionView(5)->pan == -0.1_a);
      REQUIRE(synth.getRegionView(5)->delay == 47);
      REQUIRE(synth.getRegionView(5)->keyRange == Range<uint8_t>(41, 41));
  
      REQUIRE(synth.getRegionView(6)->pan == -0.1_a);
      REQUIRE(synth.getRegionView(6)->delay == 36);
      REQUIRE(synth.getRegionView(6)->keyRange == Range<uint8_t>(30, 30));
  
      REQUIRE(synth.getRegionView(7)->pan == -0.1_a);
      REQUIRE(synth.getRegionView(7)->delay == 36);
      REQUIRE(synth.getRegionView(7)->keyRange == Range<uint8_t>(31, 31));
  }
  
  TEST_CASE("[Files] Reloading files")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/basic_hierarchy.sfz");
      REQUIRE(synth.getNumRegions() == 8);
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/basic_hierarchy.sfz");
      REQUIRE(synth.getNumRegions() == 8);
  }
  
  TEST_CASE("[Files] Full hierarchy with antislashes")
  {
      {
          Synth synth;
          synth.loadSfzFile(fs::current_path() / "tests/TestFiles/basic_hierarchy.sfz");
          REQUIRE(synth.getNumRegions() == 8);
          REQUIRE(synth.getRegionView(0)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(1)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(2)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(3)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(4)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(5)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(6)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(7)->sampleId->filename() == "Regions/dummy.1.wav");
      }
  
      {
          Synth synth;
          synth.loadSfzFile(fs::current_path() / "tests/TestFiles/basic_hierarchy_antislash.sfz");
          REQUIRE(synth.getNumRegions() == 8);
          REQUIRE(synth.getRegionView(0)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(1)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(2)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(3)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(4)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(5)->sampleId->filename() == "Regions/dummy.1.wav");
          REQUIRE(synth.getRegionView(6)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(7)->sampleId->filename() == "Regions/dummy.1.wav");
      }
  }
  
  TEST_CASE("[Files] Pizz basic")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/SpecificBugs/MeatBassPizz/Programs/pizz.sfz");
      REQUIRE(synth.getNumRegions() == 4);
      for (int i = 0; i < synth.getNumRegions(); ++i) {
          REQUIRE(synth.getRegionView(i)->keyRange == Range<uint8_t>(12, 22));
          almostEqualRanges(synth.getRegionView(i)->velocityRange, { 97_norm, 127_norm });
          REQUIRE(synth.getRegionView(i)->pitchKeycenter == 21);
          almostEqualRanges(synth.getRegionView(i)->ccConditions.getWithDefault(107),
              { 0_norm, std::nextafter(14_norm, 0.0f) }); // Fill in the gap from 13_norm to "almost 14_norm"
      }
      almostEqualRanges(synth.getRegionView(0)->randRange, { 0, 0.25 });
      almostEqualRanges(synth.getRegionView(1)->randRange, { 0.25, 0.5 });
      almostEqualRanges(synth.getRegionView(2)->randRange, { 0.5, 0.75 });
      almostEqualRanges(synth.getRegionView(3)->randRange, { 0.75, 1.0 });
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == R"(../Samples/pizz/a0_vl4_rr1.wav)");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == R"(../Samples/pizz/a0_vl4_rr2.wav)");
      REQUIRE(synth.getRegionView(2)->sampleId->filename() == R"(../Samples/pizz/a0_vl4_rr3.wav)");
      REQUIRE(synth.getRegionView(3)->sampleId->filename() == R"(../Samples/pizz/a0_vl4_rr4.wav)");
  }
  
  TEST_CASE("[Files] Channels (channels.sfz)")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/channels.sfz");
      REQUIRE(synth.getNumRegions() == 2);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == "mono_sample.wav");
      REQUIRE(!synth.getRegionView(0)->isStereo());
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == "stereo_sample.wav");
      REQUIRE(synth.getRegionView(1)->isStereo());
  }
  
  TEST_CASE("[Files] Generators and wavetables")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/wavetables.sfz");
      REQUIRE(synth.getNumRegions() == 12);
  
      int regionNumber = 0;
      const Region* region = nullptr;
  
      // generator only
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "*sine");
      REQUIRE(!region->isStereo());
      REQUIRE(region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // generator with multi
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "*sine");
      REQUIRE(region->isStereo());
      REQUIRE(region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // explicit wavetable
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::On);
  
      // explicit wavetable with multi
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::On);
  
      // explicit disabled wavetable
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Off);
  
      // explicit disabled wavetable with multi
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Off);
  
      // implicit wavetable (sound file < 3000 frames and wavetable tags)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "wavetables/surge.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // Parse oscillator=auto and same as above
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "wavetables/surge.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // implicit non wavetable (sound file < 3000 frames but no wavetable tags)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "short_non_wavetable.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // implicit non-wavetable (sound file >= 3000 frames)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "snare.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // generator with multi=1 (single)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "*sine");
      REQUIRE(!region->isStereo());
      REQUIRE(region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // generator with multi=2 (ring modulation)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "*sine");
      REQUIRE(!region->isStereo());
      REQUIRE(region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  }
  
  TEST_CASE("[Files] Embedded wavetables")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/wavetables_embedded.sfz");
      REQUIRE(synth.getNumRegions() == 7);
  
      int regionNumber = 0;
      const Region* region = nullptr;
  
      // explicit wavetable
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::On);
  
      // explicit wavetable with multi
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::On);
  
      // explicit disabled wavetable
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Off);
  
      // explicit disabled wavetable with multi
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "ramp_wave.wav");
      REQUIRE(!region->isStereo());
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Off);
  
      // implicit wavetable (sound file < 3000 frames and wavetable tags)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "wavetables/surge.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // Parse oscillator=auto and same as above
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "wavetables/surge.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  
      // implicit non wavetable (sound file < 3000 frames but no wavetable tags)
      region = synth.getRegionView(regionNumber++);
      REQUIRE(region->sampleId->filename() == "short_non_wavetable.wav");
      REQUIRE(!region->isGenerator());
      REQUIRE(!region->isOscillator());
      REQUIRE(region->oscillatorEnabled == OscillatorEnabled::Auto);
  }
  
  TEST_CASE("[Files] wrong (overlapping) replacement for defines")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/SpecificBugs/wrong-replacements.sfz");
  
      REQUIRE( synth.getNumRegions() == 3 );
  
      // Note: test checked to be wrong under Sforzando 1.961
      //       It is the shorter matching $-variable which matches among both.
      //       The rest of the variable name creates some trailing junk text
      //       which Sforzando accepts without warning. (eg. `key=57Edge`)
      REQUIRE( synth.getRegionView(0)->keyRange.getStart() == 57 );
      REQUIRE( synth.getRegionView(0)->keyRange.getEnd() == 57 );
  
      REQUIRE( synth.getRegionView(1)->keyRange.getStart() == 57 );
      REQUIRE( synth.getRegionView(1)->keyRange.getEnd() == 57 );
  
      const ModKey target = ModKey::createNXYZ(ModId::Amplitude, synth.getRegionView(2)->getId());
      const RegionCCView view(*synth.getRegionView(2), target);
      REQUIRE(!view.empty());
      REQUIRE(view.valueAt(10) == Approx(0.34f).margin(1e-3));
  }
  
  TEST_CASE("[Files] Specific bug: relative path with backslashes")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/SpecificBugs/win_backslashes.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == R"(Xylo/Subfolder/closedhat.wav)");
  }
  
  TEST_CASE("[Files] Default path")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/default_path.sfz");
      REQUIRE(synth.getNumRegions() == 4);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == R"(DefaultPath/SubPath1/sample1.wav)");
      REQUIRE(synth.getRegionView(1)->sampleId->filename() == R"(DefaultPath/SubPath2/sample2.wav)");
      REQUIRE(synth.getRegionView(2)->sampleId->filename() == R"(DefaultPath/SubPath1/sample1.wav)");
      REQUIRE(synth.getRegionView(3)->sampleId->filename() == R"(DefaultPath/SubPath2/sample2.wav)");
  }
  
  TEST_CASE("[Files] Default path reset when calling loadSfzFile again")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/default_path.sfz");
      REQUIRE(synth.getNumRegions() == 4);
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/default_path_reset.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == R"(DefaultPath/SubPath2/sample2.wav)");
  }
  
  TEST_CASE("[Files] Default path is ignored for generators")
  {
      Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/default_path_generator.sfz");
      REQUIRE(synth.getNumRegions() == 1);
      REQUIRE(synth.getRegionView(0)->sampleId->filename() == R"(*sine)");
  }
  
  TEST_CASE("[Files] Set CC applies properly")
  {
      Synth synth;
      const MidiState& midiState = synth.getResources().getMidiState();
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/set_cc.sfz");
      REQUIRE(midiState.getCCValue(142) == 63_norm);
      REQUIRE(midiState.getCCValue(61) == 122_norm);
  }
  
  TEST_CASE("[Files] Set HDCC applies properly")
  {
      sfz::Synth synth;
      const MidiState& midiState = synth.getResources().getMidiState();
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/set_hdcc.sfz");
      REQUIRE(midiState.getCCValue(142) == Approx(0.5678));
      REQUIRE(midiState.getCCValue(61) == Approx(0.1234));
  }
  
  TEST_CASE("[Files] Set RealCC applies properly")
  {
      sfz::Synth synth;
      const MidiState& midiState = synth.getResources().getMidiState();
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/set_realcc.sfz");
      REQUIRE(midiState.getCCValue(142) == Approx(0.5678));
      REQUIRE(midiState.getCCValue(61) == Approx(0.1234));
  }
  
  TEST_CASE("[Files] Note and octave offsets")
  {
      Synth synth;
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/note_offset.sfz", R"(
          <control> note_offset=1
          <region> key=63 sample=*sine
          <region> lokey=50 hikey=55 pitch_keycenter=50 sample=*sine
          <region> lokey=40 hikey=44 pitch_keycenter=40 xfin_lokey=36 xfin_hikey=40 xfout_lokey=44 xfout_hikey=48 sample=*sine
          <control> note_offset=-1
          <region> key=63 sw_lokey=24 sw_hikey=28 sw_last=25 sw_up=25 sw_down=25 sw_previous=62 sample=*sine
          <control> note_offset=1 octave_offset=1
          <region> key=63 sample=*sine
          <control> note_offset=-1 octave_offset=-1
          <region> key=63 sample=*sine
          <control> // Check that this does not reset either note or octave offset
          <region> key=63 sample=*sine
      )");
      REQUIRE( synth.getNumRegions() == 7 );
  
      REQUIRE(synth.getRegionView(0)->keyRange == Range<uint8_t>(64, 64));
      REQUIRE( synth.getRegionView(0)->pitchKeycenter == 64 );
      REQUIRE(synth.getRegionView(0)->crossfadeKeyInRange == Default::crossfadeKeyInRange);
      REQUIRE(synth.getRegionView(0)->crossfadeKeyOutRange == Default::crossfadeKeyOutRange);
  
      REQUIRE(synth.getRegionView(1)->keyRange == Range<uint8_t>(51, 56));
      REQUIRE( synth.getRegionView(1)->pitchKeycenter == 51 );
  
      REQUIRE(synth.getRegionView(2)->keyRange == Range<uint8_t>(41, 45));
      REQUIRE( synth.getRegionView(2)->pitchKeycenter == 41 );
      REQUIRE(synth.getRegionView(2)->crossfadeKeyInRange == Range<uint8_t>(37, 41));
      REQUIRE(synth.getRegionView(2)->crossfadeKeyOutRange == Range<uint8_t>(45, 49));
  
      REQUIRE(synth.getRegionView(3)->keyRange == Range<uint8_t>(62, 62));
      REQUIRE( synth.getRegionView(3)->lastKeyswitch );
      REQUIRE( *synth.getRegionView(3)->lastKeyswitch == 24 );
      REQUIRE( synth.getRegionView(3)->upKeyswitch );
      REQUIRE( *synth.getRegionView(3)->upKeyswitch == 24 );
      REQUIRE( synth.getRegionView(3)->downKeyswitch );
      REQUIRE( *synth.getRegionView(3)->downKeyswitch == 24 );
      REQUIRE( synth.getRegionView(3)->previousKeyswitch );
      REQUIRE( *synth.getRegionView(3)->previousKeyswitch == 61 );
  
      REQUIRE(synth.getRegionView(4)->keyRange == Range<uint8_t>(76, 76));
      REQUIRE( synth.getRegionView(4)->pitchKeycenter == 76 );
  
      REQUIRE(synth.getRegionView(5)->keyRange == Range<uint8_t>(50, 50));
      REQUIRE( synth.getRegionView(5)->pitchKeycenter == 50 );
  
      REQUIRE(synth.getRegionView(6)->keyRange == Range<uint8_t>(50, 50));
      REQUIRE( synth.getRegionView(6)->pitchKeycenter == 50 );
  }
  
  TEST_CASE("[Files] Off modes")
  {
      Synth synth;
      AudioBuffer<float> buffer { 2, 256 };
      synth.setSamplesPerBlock(256);
  
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/off_mode.sfz");
      REQUIRE( synth.getNumRegions() == 3 );
  
      synth.noteOn(0, 64, 63);
      synth.renderBlock(buffer);
      REQUIRE( synth.getNumActiveVoices() == 2 );
      const auto* fastVoice =
          synth.getVoiceView(0)->getRegion()->offMode == OffMode::fast ?
              synth.getVoiceView(0) :
              synth.getVoiceView(1) ;
      const auto* normalVoice =
          synth.getVoiceView(0)->getRegion()->offMode == OffMode::fast ?
              synth.getVoiceView(1) :
              synth.getVoiceView(0) ;
      synth.noteOn(100, 63, 63);
      synth.renderBlock(buffer);
  
      REQUIRE( synth.getNumActiveVoices() == 3 );
      REQUIRE( numPlayingVoices(synth) == 1 );
      for (unsigned i = 0; i < 20; ++i) // Not enough for the "normal" voice to die
          synth.renderBlock(buffer);
      REQUIRE( synth.getNumActiveVoices() == 2 );
      REQUIRE( fastVoice->isFree() );
      REQUIRE( !normalVoice->isFree() );
  }
  
  TEST_CASE("[Files] Looped regions taken from files and possibly overriden")
  {
      Synth synth;
      synth.setSamplesPerBlock(256);
      synth.setSampleRate(44100);
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/looped_regions.sfz");
      REQUIRE( synth.getNumRegions() == 3 );
      REQUIRE( synth.getRegionView(0)->loopMode == LoopMode::loop_continuous );
      REQUIRE( synth.getRegionView(1)->loopMode == LoopMode::no_loop );
      REQUIRE( synth.getRegionView(2)->loopMode == LoopMode::loop_continuous );
  
      REQUIRE(synth.getRegionView(0)->loopRange == Range<int64_t> { 77554, 186581 });
      REQUIRE(synth.getRegionView(1)->loopRange == Range<int64_t> { 77554, 186581 });
      REQUIRE(synth.getRegionView(2)->loopRange == Range<int64_t> { 4, 124 });
  }
  
  TEST_CASE("[Files] Looped regions can start at 0")
  {
      Synth synth;
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/loop_can_start_at_0.sfz", R"(
      <region> sample=wavetable_with_loop_at_endings.wav
      )");
      REQUIRE( synth.getNumRegions() == 1 );
      REQUIRE( synth.getRegionView(0)->loopMode == LoopMode::loop_continuous );
      REQUIRE( synth.getRegionView(0)->loopRange == Range<int64_t> { 0, synth.getRegionView(0)->sampleEnd } );
  }
  
  TEST_CASE("[Synth] Release triggers automatically sets the loop mode")
  {
      sfz::Synth synth;
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/triggers_setting_loops.sfz", R"(
          <region> sample=kick.wav pitch_keycenter=69 loop_mode=loop_sustain trigger=release
          <region> sample=kick.wav pitch_keycenter=69 loop_mode=loop_sustain trigger=release_key
          <region> sample=kick.wav pitch_keycenter=69 trigger=release loop_mode=loop_sustain
          <region> sample=kick.wav pitch_keycenter=69 trigger=release_key loop_mode=loop_sustain
          <region> sample=looped_flute.wav pitch_keycenter=69 trigger=release_key
          <region> sample=kick.wav pitch_keycenter=69 trigger=release_key // These are normal and set to one_shot
          <region> sample=kick.wav pitch_keycenter=69 trigger=release
      )");
      REQUIRE( synth.getNumRegions() == 7 );
      REQUIRE( synth.getRegionView(0)->loopMode == LoopMode::loop_sustain );
      REQUIRE( synth.getRegionView(1)->loopMode == LoopMode::loop_sustain );
      REQUIRE( synth.getRegionView(2)->loopMode == LoopMode::loop_sustain );
      REQUIRE( synth.getRegionView(3)->loopMode == LoopMode::loop_sustain );
      REQUIRE( synth.getRegionView(4)->loopMode == LoopMode::loop_continuous );
      REQUIRE( synth.getRegionView(5)->loopMode == LoopMode::one_shot );
      REQUIRE( synth.getRegionView(6)->loopMode == LoopMode::one_shot );
  }
  
  TEST_CASE("[Files] Case sentitiveness")
  {
      const fs::path sfzFilePath = fs::current_path() / "tests/TestFiles/case_insensitive.sfz";
  
  #if defined(_WIN32)
      const bool caseSensitiveFs = false;
  #elif defined(__APPLE__)
      const bool caseSensitiveFs = pathconf(sfzFilePath.string().c_str(), _PC_CASE_SENSITIVE) != 0;
  #else
      const bool caseSensitiveFs = true;
  #endif
  
      if (caseSensitiveFs) {
          Synth synth;
          synth.loadSfzFile(sfzFilePath);
          REQUIRE(synth.getNumRegions() == 4);
          REQUIRE(synth.getRegionView(0)->sampleId->filename() == "dummy1.wav");
          REQUIRE(synth.getRegionView(1)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(2)->sampleId->filename() == "Regions/dummy.wav");
          REQUIRE(synth.getRegionView(3)->sampleId->filename() == "Regions/dummy.wav");
      }
  }
  
  TEST_CASE("[Files] Empty file")
  {
      Synth synth;
      Parser& parser = synth.getParser();
      REQUIRE(!synth.loadSfzFile(""));
      REQUIRE(parser.getIncludedFiles().empty());
      REQUIRE(!synth.loadSfzFile({}));
      REQUIRE(parser.getIncludedFiles().empty());
  }
  
  TEST_CASE("[Files] Labels")
  {
      sfz::Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/labels.sfz");
      auto keyLabels = synth.getKeyLabels();
      auto ccLabels = synth.getCCLabels();
      REQUIRE( keyLabels.size() == 2);
      REQUIRE( keyLabels[0].first == 12 );
      REQUIRE( keyLabels[0].second == "Cymbals" );
      REQUIRE( keyLabels[1].first == 65 );
      REQUIRE( keyLabels[1].second == "Crash" );
      REQUIRE( ccLabels.size() >= 2);
      REQUIRE( absl::c_find(ccLabels, CCNamePair { 54, "Gain" }) != ccLabels.end() );
      REQUIRE( absl::c_find(ccLabels, CCNamePair { 2, "Other" }) != ccLabels.end() );
      const std::string xmlMidnam = synth.exportMidnam();
      REQUIRE(xmlMidnam.find("<Note Number=\"12\" Name=\"Cymbals\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Note Number=\"65\" Name=\"Crash\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Control Type=\"7bit\" Number=\"54\" Name=\"Gain\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Control Type=\"7bit\" Number=\"2\" Name=\"Other\" />") != xmlMidnam.npos);
  }
  
  TEST_CASE("[Files] Switch labels")
  {
      sfz::Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/labels_sw.sfz");
      const std::string xmlMidnam = synth.exportMidnam();
      REQUIRE(xmlMidnam.find("<Note Number=\"36\" Name=\"Sine\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Note Number=\"38\" Name=\"Triangle\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Note Number=\"40\" Name=\"Saw\" />") != xmlMidnam.npos);
  }
  
  TEST_CASE("[Files] Duplicate labels")
  {
      sfz::Synth synth;
      synth.loadSfzString(
          fs::current_path() / "tests/TestFiles/labels.sfz",
          R"(<control> label_key60=Baz label_key60=Quux
  <control> label_cc20=Foo label_cc20=Bar
  <region> sample=*sine)");
  
      auto keyLabels = synth.getKeyLabels();
      auto ccLabels = synth.getCCLabels();
      REQUIRE( keyLabels.size() == 1);
      REQUIRE( keyLabels[0].first == 60 );
      REQUIRE( keyLabels[0].second == "Quux" );
      REQUIRE( ccLabels.size() >= 1);
      REQUIRE( absl::c_find(ccLabels, CCNamePair { 20, "Bar" }) != ccLabels.end() );
      const std::string xmlMidnam = synth.exportMidnam();
      REQUIRE(xmlMidnam.find("<Note Number=\"60\" Name=\"Quux\" />") != xmlMidnam.npos);
      REQUIRE(xmlMidnam.find("<Control Type=\"7bit\" Number=\"20\" Name=\"Bar\" />") != xmlMidnam.npos);
  }
  
  TEST_CASE("[Files] Key center from audio file")
  {
      sfz::Synth synth;
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/sample_keycenter.sfz", R"(
          <group> pitch_keycenter=sample oscillator=off
          <region> sample=root_key_38.wav
          <region> sample=root_key_62.wav
          <region> sample=root_key_38.flac
          <region> sample=root_key_62.flac
          <region> pitch_keycenter=10 sample=root_key_62.flac
          <region> key=10 sample=root_key_62.flac
      )");
  
      REQUIRE(synth.getNumRegions() == 6);
      REQUIRE(synth.getRegionView(0)->pitchKeycenter == 38);
      REQUIRE(synth.getRegionView(1)->pitchKeycenter == 62);
      REQUIRE(synth.getRegionView(2)->pitchKeycenter == 38);
      REQUIRE(synth.getRegionView(3)->pitchKeycenter == 62);
      REQUIRE(synth.getRegionView(4)->pitchKeycenter == 10);
      REQUIRE(synth.getRegionView(5)->pitchKeycenter == 62);
  }
  
  TEST_CASE("[Files] Unused samples are cleared on reloading")
  {
      sfz::Synth synth;
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/unused_samples.sfz", R"(
          <region> sample=*sine
          <region> sample=kick.wav
      )");
      REQUIRE(synth.getNumPreloadedSamples() == 1);
  
      // Same file path to reload
      synth.loadSfzString(fs::current_path() / "tests/TestFiles/unused_samples.sfz", R"(
          <region> sample=*sine
      )");
      REQUIRE(synth.getNumPreloadedSamples() == 0);
  }
  
  // FIXME: this breaks on Github win32/win64/linux CI "sometimes" but I can't reproduce it reliably
  // Not sure the second test fails too but in doubt...
  #if 0
  TEST_CASE("[Files] Embedded sample data")
  {
      sfz::Synth synth1;
      sfz::Synth synth2;
      synth1.loadSfzFile(fs::current_path() / "tests/TestFiles/kick.sfz");
      synth2.loadSfzFile(fs::current_path() / "tests/TestFiles/kick_embedded.sfz");
      REQUIRE(synth1.getNumPreloadedSamples() == 1);
      REQUIRE(synth2.getNumPreloadedSamples() == 1);
  
      AudioBuffer<float> buffer1 { 2, 256 };
      AudioBuffer<float> buffer2 { 2, 256 };
      std::vector<float> tmp1 (buffer1.getNumFrames());
      std::vector<float> tmp2 (buffer2.getNumFrames());
  
      synth1.noteOn(0, 60, 100);
      synth2.noteOn(0, 60, 100);
  
      for (unsigned i = 0; i < 100; ++i) {
          synth1.renderBlock(buffer1);
          synth2.renderBlock(buffer2);
  
          const auto left1 = buffer1.getConstSpan(0);
          const auto left2 = buffer2.getConstSpan(0);
          std::copy(left1.begin(), left1.end(), tmp1.begin());
          std::copy(left2.begin(), left2.end(), tmp2.begin());
          REQUIRE(tmp1 == tmp2);
  
          const auto right1 = buffer1.getConstSpan(0);
          const auto right2 = buffer2.getConstSpan(0);
          std::copy(right1.begin(), right1.end(), tmp1.begin());
          std::copy(right2.begin(), right2.end(), tmp2.begin());
          REQUIRE(tmp1 == tmp2);
      }
  }
  
  TEST_CASE("[Files] Key center from audio file, with embedded sample data")
  {
      sfz::Synth synth;
      synth.loadSfzFile(fs::current_path() / "tests/TestFiles/sample_keycenter_embedded.sfz");
  
      REQUIRE(synth.getNumRegions() == 6);
      REQUIRE(synth.getRegionView(0)->pitchKeycenter == 38);
      REQUIRE(synth.getRegionView(1)->pitchKeycenter == 62);
      REQUIRE(synth.getRegionView(2)->pitchKeycenter == 38);
      REQUIRE(synth.getRegionView(3)->pitchKeycenter == 62);
      REQUIRE(synth.getRegionView(4)->pitchKeycenter == 10);
      REQUIRE(synth.getRegionView(5)->pitchKeycenter == 62);
  }
  #endif
  