Method Equals

cpp/src/arrow/dataset/test_util_internal.h:1585–1588

  std::string type_name() const override { return "dummy"; }

  bool Equals(const FileFormat& other) const override {
    return type_name() == other.type_name() &&
           schema_->Equals(checked_cast<const DummyFileFormat&>(other).schema_);
  }

  Result<bool> IsSupported(const FileSource& source) const override { return true; }