pitrou commented on a change in pull request #10454:
URL: https://github.com/apache/arrow/pull/10454#discussion_r646747304
##########
File path: cpp/src/arrow/compute/kernels/scalar_string_test.cc
##########
@@ -91,6 +91,25 @@ TYPED_TEST(TestBinaryKernels, FindSubstring) {
MatchSubstringOptions options_double_char_2{"bbcaa"};
this->CheckUnary("find_substring", R"(["abcbaabbbcaabccabaab"])",
this->offset_type(),
"[7]", &options_double_char_2);
+
+ MatchSubstringOptions options_empty{""};
+ this->CheckUnary("find_substring", R"(["", "a", null])", this->offset_type(),
+ "[0, 0, null]", &options_empty);
+}
+
+TYPED_TEST(TestBinaryKernels, CountSubstring) {
+ MatchSubstringOptions options{"aba"};
+ this->CheckUnary("count_substring", "[]", this->offset_type(), "[]",
&options);
+ this->CheckUnary(
+ "count_substring",
+ R"(["", null, "ab", "aba", "baba", "ababa", "abaaba", "babacaba",
"ABA"])",
+ this->offset_type(), "[0, null, 0, 1, 1, 1, 2, 2, 0]", &options);
+
+ MatchSubstringOptions options_empty{""};
+ this->CheckUnary("count_substring", R"(["", null, "abc"])",
this->offset_type(),
+ "[1, null, 4]", &options_empty);
+
+ // TODO: case-insensitive
Review comment:
I'd like to see a more challenging use case, e.g. counting the number of
occurrences of `"aa"` in `"aaaaa"`.
--
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.
For queries about this service, please contact Infrastructure at:
[email protected]
