alamb commented on code in PR #4147:
URL: https://github.com/apache/arrow-datafusion/pull/4147#discussion_r1018054641
##########
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
+ let scalars = vec![
+ ScalarValue::Int8(None),
+ ScalarValue::Int16(None),
+ ScalarValue::Int32(None),
+ ScalarValue::Int64(None),
+ ScalarValue::Decimal128(None, 3, 0),
+ ScalarValue::Decimal128(None, 8, 2),
+ ];
+
+ for s1 in &scalars {
+ for s2 in &scalars {
+ expect_cast(
+ s1.clone(),
+ s2.get_datatype(),
+ ExpectedCast::Value(s2.clone()),
+ );
+ }
+ }
+ }
+
+ #[test]
+ fn test_try_cast_to_type_int_in_range() {
+ // test values that can be cast to/from all integer types
+ let scalars = vec![
+ ScalarValue::Int8(Some(123)),
+ ScalarValue::Int16(Some(123)),
+ ScalarValue::Int32(Some(123)),
+ ScalarValue::Int64(Some(123)),
+ ScalarValue::Decimal128(Some(123), 3, 0),
+ ScalarValue::Decimal128(Some(12300), 8, 2),
+ ];
+
+ for s1 in &scalars {
+ for s2 in &scalars {
+ expect_cast(
+ s1.clone(),
+ s2.get_datatype(),
+ ExpectedCast::Value(s2.clone()),
+ );
+ }
+ }
+ }
+
+ #[test]
+ fn test_try_cast_to_type_int_out_of_range() {
+ let max_i64 = ScalarValue::Int64(Some(i64::MAX));
Review Comment:
yeah- as @liukun4515 mentions I have a PR queued up to support the unsigned
case :)
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