pitrou commented on a change in pull request #7382:
URL: https://github.com/apache/arrow/pull/7382#discussion_r438759834
##########
File path: cpp/src/arrow/util/bit_block_counter.h
##########
@@ -17,14 +17,21 @@
#pragma once
+#include <algorithm>
#include <cstdint>
+#include <limits>
+#include <memory>
+#include "arrow/array/array_base.h"
Review comment:
Is this useful?
##########
File path: cpp/src/arrow/compute/kernels/vector_take_test.cc
##########
@@ -211,13 +306,63 @@ TYPED_TEST(TestTakeKernelWithString, TakeString) {
"[2, 5]", &arr));
}
+TEST(TestTakeKernelString, Random) {
+ DoRandomTakeTests<StringType>(
+ [](int64_t length, double null_probability,
random::RandomArrayGenerator* rng) {
+ return rng->String(length, 0, 32, null_probability);
+ });
+ DoRandomTakeTests<LargeStringType>(
+ [](int64_t length, double null_probability,
random::RandomArrayGenerator* rng) {
+ return rng->LargeString(length, 0, 32, null_probability);
+ });
Review comment:
Do you think you can add tests for sliced arrays with a non-0 offset?
Both for primitive types and string-like types.
##########
File path: cpp/src/arrow/compute/kernels/vector_take_test.cc
##########
@@ -72,6 +73,120 @@ void AssertTakeBoolean(const std::string& values, const
std::string& indices,
CheckTake(boolean(), values, indices, expected);
}
+template <typename ValuesType, typename IndexType>
+void ValidateTakeImpl(const std::shared_ptr<Array>& values,
+ const std::shared_ptr<Array>& indices,
+ const std::shared_ptr<Array>& result) {
+ using ValuesArrayType = typename TypeTraits<ValuesType>::ArrayType;
+ using IndexArrayType = typename TypeTraits<IndexType>::ArrayType;
+ auto typed_values = checked_pointer_cast<ValuesArrayType>(values);
+ auto typed_result = checked_pointer_cast<ValuesArrayType>(result);
+ auto typed_indices = checked_pointer_cast<IndexArrayType>(indices);
+ for (int64_t i = 0; i < indices->length(); ++i) {
+ if (typed_indices->IsNull(i) ||
typed_values->IsNull(typed_indices->Value(i))) {
+ ASSERT_TRUE(result->IsNull(i));
+ continue;
+ }
+ ASSERT_EQ(typed_result->GetView(i),
typed_values->GetView(typed_indices->Value(i)))
Review comment:
Also add `ASSERT_FALSE(result->IsNull(i))`?
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