New and Optimized Regex Search Test Functions.

[brandenvs]

New functions include:

test_regex_search_case_insensitive()
test_regex_search_multiple_groups()
test_regex_search_group_out_of_range()
test_regex_search_group_out_of_range()

Motivation for additional functions

The test functions present did not consider whether we were testing a case-insensitive or case-sensitive field/string. This contribution has also been amended to include the testing of multiple groups. Then, I added a test function for scenarios where a group is out of bounds and throws an IndexError.

Improved functions include:

test_regex_search()

Motivation for improvement

The test functions were redundant, so I combined the test_regex_search_no_match() with test_regex_search.

I hope you will consider my contribution.

Warm regards,
Branden.