Refactoring and Optimization of Tokenization Tests.

[SSHxDEV]

Change Description

This Pull Request introduces optimization and readability improvements to the tokenization tests.

Changes Made

• The code has been restructured to be more concise and readable.
• Whitespace, control, and punctuation characters have been grouped into separate lists.
• A for loop is used to iterate over the lists and perform the corresponding assertions.
• Redundant code repetition has been eliminated.

These changes aim to improve the efficiency and maintainability of the tokenization tests.

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