feat: Missing Comprehensive Testing Suite and Test Coverage

[KevinMB0220]

Issue: Missing Comprehensive Testing Suite and Test Coverage

Description:

The project has some test files but lacks comprehensive testing coverage for critical game systems. Many tests are incomplete, missing edge cases, and don't properly validate the complex interactions between different game systems.

Problems Identified:

1. Incomplete Test Files: Many test files exist but have minimal or no actual test implementations
2. Missing Integration Tests: No tests for system interactions (Player + Gear + Session + Marketplace)
3. No Edge Case Testing: Missing tests for error conditions, boundary cases, and failure scenarios
4. Incomplete Mock Data: Tests lack proper mock data setup for complex scenarios
5. Missing Performance Tests: No tests for gas optimization or performance under load

Code Issues Found:

// In test files - Many tests are incomplete or missing
// Example from gear_integration_test.cairo - likely incomplete
// Example from session_system_test.cairo - likely missing edge cases
// Example from player_session_integration_test.cairo - likely incomplete integration

Specific Problems:

1. No Session Management Tests: Critical session validation and management logic is untested
2. Missing Gear System Tests: Gear upgrades, equipment, and stats calculations are untested
3. No Marketplace Tests: Trading, auctions, and fee calculations are untested
4. Missing Player System Tests: Player creation, damage, and state management are untested
5. No Error Handling Tests: No tests for invalid inputs, unauthorized access, or system failures

Impact:

• High Priority: High risk of bugs in production
• Difficult to verify system correctness
• No confidence in system reliability
• Hard to refactor or add features safely
• Potential security vulnerabilities undetected

Recommended Solutions:

1. Complete Session Management Tests:

   #[test]
   fn test_session_creation_and_validation() {
       // Test valid session creation
       // Test session expiration
       // Test session limit enforcement
       // Test auto-renewal logic
   }
   
   #[test]
   fn test_session_edge_cases() {
       // Test expired session handling
       // Test invalid session IDs
       // Test session limit exceeded
       // Test concurrent session creation
   }

2. Add Comprehensive Gear System Tests:

   #[test]
   fn test_gear_upgrade_system() {
       // Test successful upgrades
       // Test failed upgrades
       // Test material consumption
       // Test upgrade level limits
   }
   
   #[test]
   fn test_equipment_system() {
       // Test item equipping
       // Test item unequipping
       // Test equipment conflicts
       // Test equipment stats calculation
   }

3. Implement Marketplace Tests:

   #[test]
   fn test_marketplace_trading() {
       // Test item listing
       // Test item purchasing
       // Test fee calculations
       // Test escrow management
   }
   
   #[test]
   fn test_auction_system() {
       // Test auction creation
       // Test bid placement
       // Test auction ending
       // Test bid validation
   }

4. Add Player System Tests:

   #[test]
   fn test_player_creation() {
       // Test new player creation
       // Test player initialization
       // Test faction assignment
       // Test player state validation
   }
   
   #[test]
   fn test_damage_system() {
       // Test damage calculation
       // Test armor damage reduction
       // Test player death
       // Test damage events
   }

5. Create Integration Tests:

   #[test]
   fn test_complete_game_flow() {
       // Test: Create player -> Spawn gear -> Equip gear -> Join tournament -> Trade items
       // This tests the entire game flow end-to-end
   }
   
   #[test]
   fn test_session_with_gear_operations() {
       // Test session validation with gear operations
       // Test session expiration during gear operations
       // Test session renewal during long operations
   }

6. Add Error Handling Tests:

   #[test]
   fn test_unauthorized_access() {
       // Test admin-only functions with non-admin
       // Test player-only functions with non-player
       // Test session validation failures
   }
   
   #[test]
   fn test_invalid_inputs() {
       // Test zero values
       // Test overflow values
       // Test invalid addresses
       // Test malformed data
   }

7. Implement Performance Tests:

   #[test]
   fn test_gas_optimization() {
       // Test gas usage for batch operations
       // Test gas usage for large arrays
       // Test gas usage for complex calculations
   }

Files Affected:

• src/test/ - All test files need completion
• src/test/session_system_test.cairo - Needs comprehensive session tests
• src/test/gear_integration_test.cairo - Needs gear system tests
• src/test/player_session_integration_test.cairo - Needs integration tests
• Missing: Error handling tests, performance tests, edge case tests