pitrou commented on a change in pull request #11257:
URL: https://github.com/apache/arrow/pull/11257#discussion_r721483382
##########
File path: cpp/src/arrow/compute/kernels/aggregate_test.cc
##########
@@ -873,6 +874,98 @@ TYPED_TEST(TestRandomNumericCountKernel, RandomArrayCount)
{
}
}
+//
+// Count Distinct
+//
+
+class TestCountDistinctKernel : public ::testing::Test {
+ protected:
+ void SetUp() override {
+ only_valid = CountOptions(CountOptions::ONLY_VALID);
+ only_null = CountOptions(CountOptions::ONLY_NULL);
+ all = CountOptions(CountOptions::ALL);
+ }
+
+ Datum Expected(int64_t value) { return
MakeScalar(static_cast<int64_t>(value)); }
+
+ void Check(Datum input, int64_t expected_all, bool has_nulls = true) {
+ int64_t expected_valid = has_nulls ? expected_all - 1 : expected_all;
+ int64_t expected_null = has_nulls ? 1 : 0;
+ CheckScalar("count_distinct", {input}, Expected(expected_valid),
&only_valid);
+ CheckScalar("count_distinct", {input}, Expected(expected_null),
&only_null);
+ CheckScalar("count_distinct", {input}, Expected(expected_all), &all);
+ }
+
+ void Check(const std::shared_ptr<DataType>& type, util::string_view json,
+ int64_t expected_all, bool has_nulls = true) {
+ Check(ArrayFromJSON(type, json), expected_all, has_nulls);
+ }
+
+ CountOptions only_valid;
+ CountOptions only_null;
+ CountOptions all;
+};
+
+TEST_F(TestCountDistinctKernel, AllArrowTypesWithNulls) {
Review comment:
As a side note, if there's an apparent bug in the implementation, and
the bug isn't surfaced in the tests, then logically the tests probably don't
cover that bug.
--
This is an automated message from the Apache Git Service.
To respond to the message, please log on to GitHub and use the
URL above to go to the specific comment.
To unsubscribe, e-mail: [email protected]
For queries about this service, please contact Infrastructure at:
[email protected]
