bkietz commented on a change in pull request #7410:
URL: https://github.com/apache/arrow/pull/7410#discussion_r441021056
##########
File path: cpp/src/arrow/testing/random.h
##########
@@ -250,6 +250,21 @@ class ARROW_EXPORT RandomArrayGenerator {
int32_t min_length, int32_t
max_length,
double null_probability = 0);
+ /// \brief Randomly generate an Array of the specified type, size, and
null_probability.
+ ///
+ /// Generation parameters other than size and null_probability are
determined based on
+ /// the type of Array to be generated.
+ /// If boolean the probabilities of true,false values are 0.25,0.75
respectively.
+ /// If numeric min,max will be the least and greatest representable values.
+ /// If string min_length,max_length will be 0,sqrt(size) respectively.
+ ///
+ /// \param[in] type the type of Array to generate
+ /// \param[in] size the size of the Array to generate
+ /// \param[in] null_probability the probability of a slot being null
+ /// \return a generated Array
+ std::shared_ptr<Array> ArrayOf(std::shared_ptr<DataType> type, int64_t size,
+ double null_probability);
Review comment:
https://issues.apache.org/jira/browse/ARROW-9149
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