Add more unit tests for get_public_key operation

[tcoratger]

Description

This pull request enhances the test coverage of the get_public_key implementation by adding more unit tests. These additional tests cover a wider range of scenarios to ensure the robustness and correctness of the function.

Changes

• Added additional unit tests for the get_public_key function.
• Utilized a list of precomputed address pairs available here to expand the test coverage.
• Improved the reliability and completeness of the test suite.

Purpose

The purpose of this pull request is to strengthen the testing suite for the get_public_key function, thereby increasing confidence in its behavior and ensuring that it functions correctly across a wider range of inputs.

[xJonathanLEI]

Thanks for the PR! More tests == better. The test_get_public_keys_from_json is failing though, as it tries to perform file system operations in WASM. You can change to use include_str! (which IMO is better for tests) instead.

[tcoratger]

Thanks for the PR! More tests == better. The test_get_public_keys_from_json is failing though, as it tries to perform file system operations in WASM. You can change to use include_str! (which IMO is better for tests) instead.

@xJonathanLEI Done

[xJonathanLEI]

Rebasing for CI.