test: Add comprehensive test suite for CacheFactory

[saber04414]

Description

This PR adds a comprehensive unit test suite for the CacheFactory class to ensure proper functionality, error handling, and instance management.

Changes

• Added: test/cache_factory_suite.py - Complete test suite for CacheFactory

Test Coverage

✅ Test Case 1: Create Memory Cache

• Verifies successful creation of ExpiringLocalCache instances
• Tests cache instance type validation
• Validates AbstractCache interface implementation
• Tests basic cache operations (set/get)
• Tests custom parameter passing (cron_interval)

✅ Test Case 2: Create Redis Cache

• Verifies successful creation of RedisCache instances
• Tests with mocked Redis connections to avoid external dependencies
• Validates cache instance type and interface compliance
• Tests integration with mocked Redis client

✅ Test Case 3: Invalid Cache Type Handling

• Tests ValueError raising for unknown cache types
• Validates error messages include the invalid cache type
• Tests edge cases: empty string, None, numeric types
• Ensures descriptive error messages for debugging

✅ Test Case 4: Singleton Pattern Validation

• Verifies that CacheFactory does NOT enforce singleton pattern
• Tests that multiple calls return independent instances
• Validates instance independence (data isolation)
• Tests static method functionality
• Tests independence between different cache types

Additional Features

• Comprehensive Comments: Extensive inline comments and docstrings for easy understanding
• Clear Structure: Well-organized test methods with clear section separators
• Edge Case Coverage: Tests for case sensitivity, extra parameters, and various invalid inputs
• Mocking: Proper use of mocks to avoid external dependencies (Redis)

Testing

Run the test suite with:
python -m unittest test.cache_factory_suiteOr directly:
python test/cache_factory_suite.py## Notes

• All tests follow the existing project's testing patterns (unittest framework)
• Tests use mocking to avoid requiring actual Redis connections
• Code includes extensive comments and blank lines for readability
• Follows the project's code style and licensing requirements

Contribution by Gittensor, learn more at https://gittensor.io/

[saber04414]

@NanmiCoder Could you please review my PR?