🧪 Enhance Testing with Stress Tests and Integration Tests

[kengggg]

🧪 Enhance Testing with Stress Tests and Integration Tests

Overview

Expand the test suite with comprehensive stress testing, integration tests, and memory monitoring to ensure VanitySSH performs reliably under various load conditions and complex scenarios.

Tasks

1. Stress Testing Suite

• Long-running pattern tests - Complex regex patterns
• High thread count tests - Scaling beyond typical usage
• Memory pressure tests - Extended key generation sessions
• Edge case patterns - Pathological regex cases

2. Integration Tests

• End-to-end CLI testing - Full command execution
• Cross-platform key compatibility - SSH key validity across OS
• Real SSH usage validation - Generated keys work with SSH
• Performance under load - Thread pool behavior

3. Memory and Resource Testing

• Memory leak detection - Long-running process monitoring
• Resource cleanup validation - Thread termination verification
• Peak memory usage tracking - Resource consumption limits
• File descriptor management - Resource handle cleanup

4. Test Infrastructure

• Test fixtures and helpers - Reusable test utilities
• Timeout management - Prevent hanging tests
• Resource monitoring - Memory/CPU usage during tests
• Test result reporting - Enhanced test output

Acceptance Criteria

• Stress tests pass consistently across all platforms
• Memory usage remains stable during long runs
• Integration tests validate real-world usage
• Test suite runs in under 10 minutes
• No memory leaks detected

Implementation Details

Stress Test Examples

#[test]
fn stress_test_complex_patterns() {
    let complex_patterns = vec![
        r"^[A-Za-z0-9]{10,}$",
        r".*([0-9]{4,6}).*",
        r"^(?=.*[A-Z])(?=.*[0-9]).*",
    ];
    
    for pattern in complex_patterns {
        // Test with high thread count
        let result = test_pattern_with_threads(pattern, 16);
        assert!(result.is_ok());
    }
}

#[test]
fn stress_test_memory_usage() {
    let initial_memory = get_memory_usage();
    
    // Run for extended period
    run_key_generation_for_duration(Duration::from_secs(30));
    
    let final_memory = get_memory_usage();
    assert!(final_memory - initial_memory < MEMORY_LIMIT);
}

Integration Test Structure

#[test]
fn integration_test_ssh_key_validity() {
    let (public_key, private_key) = generate_test_key_pair();
    
    // Validate OpenSSH format
    assert!(validate_openssh_format(&public_key));
    assert!(validate_openssh_format(&private_key));
    
    // Test key pair compatibility
    assert!(test_ssh_key_pair(&public_key, &private_key));
}

Test Categories

1. Stress Tests (tests/stress/)

• complex_patterns.rs - Challenging regex patterns
• high_concurrency.rs - Many threads/high load
• memory_pressure.rs - Extended runtime testing
• edge_cases.rs - Boundary conditions

2. Integration Tests (tests/integration/)

• cli_integration.rs - Full CLI workflow testing
• ssh_compatibility.rs - Real SSH usage validation
• cross_platform.rs - Platform-specific behaviors
• performance_integration.rs - End-to-end performance

3. Resource Tests (tests/resources/)

• memory_monitoring.rs - Memory leak detection
• thread_cleanup.rs - Resource cleanup validation
• file_descriptors.rs - Handle management
• cpu_usage.rs - CPU utilization patterns

Testing Infrastructure

Memory Monitoring

fn monitor_memory_usage<F>(test_fn: F) -> MemoryReport 
where F: FnOnce() {
    let initial = get_process_memory();
    test_fn();
    let final_mem = get_process_memory();
    
    MemoryReport {
        initial_mb: initial,
        final_mb: final_mem,
        peak_mb: get_peak_memory(),
        leaked_mb: final_mem - initial,
    }
}

Test Timeouts

#[test]
#[timeout(Duration::from_secs(60))]
fn stress_test_with_timeout() {
    // Test that must complete within 60 seconds
}

CI Integration

• Add stress test job (allowed to take longer)
• Memory usage reporting in CI
• Integration test validation
• Test result artifacts and reporting

Timeline

Estimate: 3-4 days
Priority: Medium-High
Phase: 1

Labels

enhancement, testing, phase-1, priority-medium, ci/cd

Dependencies

• Should run after benchmarking implementation for performance comparison

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Part of Phase 1: Enhanced CI Foundation - Ensures reliability and performance under real-world conditions