Enhance Swap Logic and Refactor Test Cases for Improved Clarity and Maintainability

[techvoyagerX]

Overview

The tests/swap/tests/swap.js file in the Anchor repository requires updates to improve clarity, modularity, and maintainability. Enhancements to the swap logic and test coverage are necessary to streamline functionality and facilitate future development.

Problem Statement

The current implementation has areas of improvement, including:

• Duplication in account setup logic.
• Scattered handling of fees and calculations.
• Lack of modular utilities for balance verification in tests.
• Limited clarity in test case structure and assertions.

Proposed Solution

1. Refactor reusable account setup logic into modular functions.
2. Introduce a centralized TAKER_FEE constant to simplify fee calculations.
3. Implement a withBalanceChange utility function for cleaner balance verification.
4. Enhance test cases to:
   • Improve coverage of swap scenarios (e.g., Token A ↔ USDC, Token A ↔ Token B).
   • Provide more detailed and precise assertions.
5. Clean up inline comments and improve variable naming for better readability.

Acceptance Criteria

• All tests should pass successfully after the updates.
• Code should exhibit improved modularity and clarity.
• Test cases should cover all intended scenarios with clear assertions.
• The updated implementation should align with existing coding standards.

Impact

• Improved developer experience for contributors working on swap-related logic.
• Easier debugging and future extension of functionality.