Method FakeInt64Map

eval/public/builtin_func_test.cc:1196–1203

class FakeInt64Map : public FakeMap<int64_t> {
 public:
  explicit FakeInt64Map(const std::map<int64_t, CelValue>& data)
      : FakeMap(data, CelValue::CreateInt64,
                [](CelValue v) -> absl::optional<int64_t> {
                  if (!v.IsInt64()) {
                    return absl::nullopt;
                  }
                  return v.Int64OrDie();
                }) {}
};

class FakeUint64Map : public FakeMap<uint64_t> {