tustvold commented on code in PR #2940:
URL: https://github.com/apache/arrow-rs/pull/2940#discussion_r1006165467
##########
arrow/src/compute/kernels/boolean.rs:
##########
@@ -1136,6 +1135,278 @@ mod tests {
Some(8), // None => keep it
None, // true => None
]);
- assert_eq!(&expected, &res)
+ let res = as_primitive_array::<Int32Type>(&res);
+ assert_eq!(&expected, res)
+ }
+
+ #[test]
+ fn test_nullif_string() {
+ let s = StringArray::from_iter([
+ Some("hello"),
+ None,
+ Some("world"),
+ Some("a"),
+ Some("b"),
+ None,
+ None,
+ ]);
+ let select = BooleanArray::from_iter([
+ Some(true),
+ Some(true),
+ Some(false),
+ Some(true),
+ Some(false),
+ Some(false),
+ None,
+ ]);
+
+ let a = nullif(&s, &select).unwrap();
+ let r: Vec<_> = as_string_array(&a).iter().collect();
+ assert_eq!(
+ r,
+ vec![None, None, Some("world"), None, Some("b"), None, None]
+ );
+
+ let s = s.slice(2, 3);
+ let select = select.slice(1, 3);
+ let select = as_boolean_array(select.as_ref());
+ let a = nullif(s.as_ref(), select).unwrap();
+ let r: Vec<_> = as_string_array(&a).iter().collect();
+ assert_eq!(r, vec![None, Some("a"), None]);
+ }
+
+ #[test]
Review Comment:
These tests are borrowed from @bjchambers original PR #521
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