Method AssertIndexIs

cpp/src/arrow/compute/kernels/aggregate_test.cc:2612–2618

 public:
  using ScalarType = typename TypeTraits<ArrowType>::ScalarType;
  void AssertIndexIs(const std::string& json, const std::shared_ptr<ScalarType>& value,
                     int64_t expected) {
    SCOPED_TRACE("Value: " + value->ToString());
    SCOPED_TRACE("Input: " + json);
    auto array = ArrayFromJSON(type_singleton(), json);
    CheckIndex(array, value, expected);
  }

  void AssertIndexIs(const std::vector<std::string>& json,
                     const std::shared_ptr<ScalarType>& value, int64_t expected) {