TestGen generating unit tests for function code validation

[alexgarzao]

This PR introduces a new set of generated unit tests for function code validation, refactors the test generation process, and updates the build pipeline to include these new tests. The main focus is on expanding test coverage for function validator code and streamlining the test generation workflow.

Test Generation Enhancements

• Added a new template file testgen/function_code_test.tpl for generating unit tests that validate the output of function code generation logic. This template supports comprehensive test cases for various struct and field validation scenarios.
• Implemented testgen/generate_function_code_tests.go, a new generator that creates function code unit tests for both pointer and non-pointer struct fields. It constructs test cases, generates expected code, and writes formatted Go test files.
• Refactored the main test generation entry point in testgen/generate_tests.go to call the new generateFunctionCodeUnitTests and renamed other test generation functions for clarity and separation of concerns.

Build Pipeline Update

• Updated the Makefile to move newly generated function code test files (generated_function_code_*_test.go) into the correct destination directory (internal/codegenerator/) as part of the test generation step.

[Copilot]

Pull Request Overview

This PR introduces a new test generation system for validating function code generation logic, refactors existing test generators for clarity, and updates the build pipeline to handle the new test files. The main purpose is to expand test coverage for the function validator code generation process.

Key Changes

• Added a new function code test generator that creates comprehensive unit tests for both pointer and non-pointer struct field scenarios
• Renamed existing test generation functions to be more descriptive (generateValidationTypesEndToEndTests and generateValidationCodeUnitTests)
• Updated the Makefile to move newly generated function code test files to the correct destination directory

Reviewed Changes

Copilot reviewed 4 out of 6 changed files in this pull request and generated 3 comments.

File	Description
testgen/generate_tests.go	Updated main entry point to call renamed test generators and new function code test generator
testgen/generate_function_code_tests.go	Implements new generator for function code validation unit tests with support for pointer/non-pointer scenarios
testgen/function_code_test.tpl	Defines template for generating function code unit tests with struct and field validation scenarios
Makefile	Extended testgen target to move generated function code test files to internal/codegenerator/ directory

[Copilot]

Pull Request Overview

Copilot reviewed 4 out of 6 changed files in this pull request and generated no new comments.