Add tests for Oracle tablespace specification in table definitions

Add tests for Oracle tablespace specification in table definitions

This commit adds new tests to verify the correct handling of tablespace names in Oracle table definitions. The tests ensure that tablespace names are recognized correctly regardless of their case (uppercase, lowercase, mixed case).

Tests added:
- : Verifies that tablespace names are correctly included in the CREATE TABLE statement for different cases:
  - Uppercase tablespace name
  - Lowercase tablespace name
  - Mixed case tablespace name

These tests ensure that the  argument is handled correctly and that the generated SQL statements include the specified tablespace names as expected.