isidentical commented on code in PR #4147:
URL: https://github.com/apache/arrow-datafusion/pull/4147#discussion_r1017234261
##########
datafusion/optimizer/src/unwrap_cast_in_comparison.rs:
##########
@@ -653,4 +655,196 @@ mod tests {
fn null_decimal(precision: u8, scale: u8) -> Expr {
lit(ScalarValue::Decimal128(None, precision, scale))
}
+
+ #[test]
+ fn test_try_cast_to_type_nulls() {
+ // test values that can be cast to/from all integer types
Review Comment:
It is a bit confusing that this description is the same as the one below, so
might make sense to actually emphasize this is only testing null values for
integer types.
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