augustoasilva commented on a change in pull request #10595:
URL: https://github.com/apache/arrow/pull/10595#discussion_r658347627
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File path: cpp/src/gandiva/precompiled/string_ops_test.cc
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@@ -194,6 +194,34 @@ TEST(TestStringOps, TestConvertReplaceInvalidUtf8Char) {
ctx.Reset();
}
+TEST(TestStringOps, TestRepeat) {
+ gandiva::ExecutionContext ctx;
+ uint64_t ctx_ptr = reinterpret_cast<gdv_int64>(&ctx);
+ gdv_int32 out_len = 0;
+
+ const char* out_str = repeat_utf8_int32(ctx_ptr, "abc", 3, 2, &out_len);
+ EXPECT_EQ(std::string(out_str, out_len), "abcabc");
+ EXPECT_FALSE(ctx.has_error());
+
+ out_str = repeat_utf8_int32(ctx_ptr, "a", 1, 5, &out_len);
+ EXPECT_EQ(std::string(out_str, out_len), "aaaaa");
+ EXPECT_FALSE(ctx.has_error());
+
+ out_str = repeat_utf8_int32(ctx_ptr, "", 0, 10, &out_len);
+ EXPECT_EQ(std::string(out_str, out_len), "");
+ EXPECT_FALSE(ctx.has_error());
+
+ out_str = repeat_utf8_int32(ctx_ptr, "", -20, 10, &out_len);
+ EXPECT_EQ(std::string(out_str, out_len), "");
+ EXPECT_FALSE(ctx.has_error());
+
+ out_str = repeat_utf8_int32(ctx_ptr, "a", 1, -10, &out_len);
+ EXPECT_EQ(std::string(out_str, out_len), "");
+ EXPECT_THAT(ctx.get_error(),
+ ::testing::HasSubstr("Repeat number can't be negative"));
+ ctx.Reset();
+}
+
Review comment:
Wouldn't it be good to also put a case where you have a value passed
that generates a nullptr, thus making the error of not being able to allocate
memory?
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