Function TEST_F

cpp/src/arrow/compute/exec_test.cc:215–229

class TestPropagateNulls : public TestComputeInternals {};

TEST_F(TestPropagateNulls, UnknownNullCountWithNullsZeroCopies) {
  const int64_t length = 16;

  constexpr uint8_t validity_bitmap[8] = {254, 0, 0, 0, 0, 0, 0, 0};
  auto nulls = std::make_shared<Buffer>(validity_bitmap, 8);

  ArrayData output(boolean(), length, {nullptr, nullptr});
  ArrayData input(boolean(), length, {nulls, nullptr}, kUnknownNullCount);

  ExecBatch batch({input}, length);
  ASSERT_OK(PropagateNulls(ctx_.get(), ExecSpan(batch), &output));
  ASSERT_EQ(nulls.get(), output.buffers[0].get());
  ASSERT_EQ(kUnknownNullCount, output.null_count);
  ASSERT_EQ(9, output.GetNullCount());
}

TEST_F(TestPropagateNulls, UnknownNullCountWithoutNulls) {
  const int64_t length = 16;