Introduce file‑based end‑to‑end tests for expression evaluation

[MidnightDesign]

No description provided.

[Copilot]

Pull Request Overview

This PR implements a comprehensive end-to-end testing framework for an expression evaluation system. The implementation introduces a data-driven testing approach using test case files and a custom test runner.

Key changes:

• Added structured test case files covering various expression types (literals, equality, logical operations, map operations)
• Implemented E2eCase class for parsing and managing test case files
• Created EndToEndTest class to execute the test cases using PHPUnit

Reviewed Changes

Copilot reviewed 20 out of 20 changed files in this pull request and generated 2 comments.

File	Description
tests/unit/cases/*/*.txt	Test case files defining expressions, inputs, and expected outputs for various scenarios
tests/unit/E2eCase.php	Parser class for reading and processing test case files into structured data
tests/unit/EndToEndTest.php	PHPUnit test class that executes all test cases using data provider pattern

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[Copilot]

Pull Request Overview

Copilot reviewed 21 out of 21 changed files in this pull request and generated 1 comment.

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