himadripal commented on code in PR #7177:
URL: https://github.com/apache/arrow-rs/pull/7177#discussion_r1973050216
##########
arrow-cast/src/cast/decimal.rs:
##########
@@ -590,43 +590,34 @@ where
#[cfg(test)]
mod tests {
use super::*;
+ use crate::parse::parse_decimal;
#[test]
fn test_parse_string_to_decimal_native() -> Result<(), ArrowError> {
- assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("0", 0)?,
- 0_i128
- );
- assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("0", 5)?,
- 0_i128
- );
+ assert_eq!(parse_decimal::<Decimal128Type>("0", 38, 0)?, 0_i128);
+ assert_eq!(parse_decimal::<Decimal128Type>("0", 38, 5)?, 0_i128);
+ assert_eq!(parse_decimal::<Decimal128Type>("123", 38, 0)?, 123_i128);
assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("123", 0)?,
- 123_i128
- );
- assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("123", 5)?,
+ parse_decimal::<Decimal128Type>("123", 38, 5)?,
12300000_i128
);
+ // `parse_decimal` does not handle scale=0 correctly. will enable it
as part of code change PR.
+ // assert_eq!(parse_decimal::<Decimal128Type>("123.45", 38, 0)?,
123_i128);
assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("123.45", 0)?,
- 123_i128
- );
- assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("123.45", 5)?,
+ parse_decimal::<Decimal128Type>("123.45", 38, 5)?,
12345000_i128
);
- assert_eq!(
- parse_string_to_decimal_native::<Decimal128Type>("123.4567891",
0)?,
+ //scale = 0 is not handled correctly in parse_decimal, next PR will
fix it and enable this.
Review Comment:
Now, we can close this PR, as I added additional test in #7179 to check
the values generated by `parse_string_to_decimal_native` and `parse_decimal`
are same.
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