SNOW-1619616: Failing tests of [Small|Big|]IntToScaledFixedConverter for non-standard LOCALE

[bauer-at-work]

1. What version of JDBC driver are you using?
   latest from git

2. What operating system and processor architecture are you using?
   Fedora 40, amd64

3. What version of Java are you using?
   21

4. What did you do?
   ./mvnw clean verify

5. What did you expect to see?

   all test successful.
   However, three tests (SmallInt, Int, BigInt conversion) were failing.

For example,

test IntToFixedConverterTest::testFixedWithScale()

Test run with standard system settings

L130 converter.toString(i): Here, a value in the form of 1,234 is returned.

L141 expectedVal.toString(): This returns 1.234.

Test run with LC_ALL=C

Test completes successfully

SUMMARY

the [Small|Big|]IntToScaledConvert classes are not locale-agnostic and run into failures depending on the locale configuration of the system.

I believe that either

• the tests should take the locale into account
• there should be new tests that assert correct handling of locale settings
• the README or developer notes should mention to run with LC_ALL=C or something along those lines