Function testVariadicArgReuse

bolt/expression/tests/SimpleFunctionTest.cpp:997–1022

};

VectorPtr testVariadicArgReuse(
    core::ExecCtx* execCtx,
    VectorMaker& vectorMaker,
    std::vector<VectorPtr>& inputs,
    const std::string& functionName,
    const TypePtr& outputType) {
  // This is a bit of a round about way of creating the SimpleFunctionAdapter,
  // especially since it requires the caller to register the function as well,
  // but it should be easier to maintain.
  auto function =
      exec::simpleFunctions()
          .resolveFunction(functionName, {})
          ->createFunction()
          ->createVectorFunction({}, {}, execCtx->queryCtx()->queryConfig());

  // Create a dummy EvalCtx.
  SelectivityVector rows(inputs[0]->size());
  exec::ExprSet exprSet({}, execCtx);
  RowVectorPtr inputRows = vectorMaker.rowVector({});
  exec::EvalCtx evalCtx(execCtx, &exprSet, inputRows.get());

  VectorPtr resultPtr;
  function->apply(rows, inputs, outputType, evalCtx, resultPtr);

  return resultPtr;
}

TEST_F(SimpleFunctionTest, variadicReuseFirstArg) {
  std::string functionName = "function_with_variadic";