pitrou commented on code in PR #47969:
URL: https://github.com/apache/arrow/pull/47969#discussion_r2507998177
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cpp/src/arrow/array/statistics_test.cc:
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@@ -25,12 +25,20 @@
namespace arrow {
-TEST(TestArrayStatistics, NullCount) {
+TEST(TestArrayStatistics, NullCountExact) {
ArrayStatistics statistics;
ASSERT_FALSE(statistics.null_count.has_value());
statistics.null_count = 29;
ASSERT_TRUE(statistics.null_count.has_value());
- ASSERT_EQ(29, statistics.null_count.value());
+ ASSERT_EQ(29, std::get<int64_t>(statistics.null_count.value()));
+}
+
+TEST(TestArrayStatistics, NullCountApproximate) {
+ ArrayStatistics statistics;
+ ASSERT_FALSE(statistics.null_count.has_value());
+ statistics.null_count = 29.0;
+ ASSERT_TRUE(statistics.null_count.has_value());
+ ASSERT_EQ(29.0, std::get<double>(statistics.null_count.value()));
Review Comment:
Please don't. The value is _exactly_ 29.0, it's not "something around 29.0".
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