Fixed sense of underflow constraint violation test.

assertColumnLegalValue() now correctly fails if the legal value generates a constraint violation.

Added support for detecting column aliases (can’t do much about it other than warn the user, as the fixture won’t match if the name’s different anyway).

Added a comment explaining why a WITH won’t solve the LONG problem in User_Constraints.

- Changed run mode and verbosity variables to global constants. ...

- Added different output for some tests based on RUN_MODE.
- Cleaned up output for all tests.

Fixed output typos.

Removed some obsolete console output.

Fixed incorrect array nesting in assertFKColumns.

Moved scenario-specific code into scenario subtree and factored out globally defined values into various configuration files. Also replaced a bunch of things with global constants.

Temporarily stripped out text that would reveal information to students. Need a better solution long-term!

Implemented new error reporting scheme using subclasses of SimpleTestListener.

Implemented Reporter support for use within assert() methods.

Factored out connection login details.

Made the database connection reusable rather than recreating it every time.

Fixed typo in output.

Ensured that maximum and minimum column length assertions are only asserted where actually relevant.

Rewrote provideColumnLengths() to return fixed rather than variable-length result.

- Improved descriptive output. ...

- Added sqlifyValue function to improve flexibility of SQL string handling.
- Renamed 'type' property to 'sql_type'.
- Added 'generic_type' property.
- Improved testing of legal and illegal values.

Added preliminary output based on whether an illegal value is rejected by a constraint or an actual overflow.

- Slightly tidier printing of messages involving plurals. ...

- Now properly handles both "check constraint violated" and "value larger than specified precision" errors.

Added experimental unit testing code.