path-security 0.2.0

# Testing - Path Security

## Overview

This document provides comprehensive testing strategies and examples for the Path Security module.

## Testing Strategy

### Testing Pyramid

1. **Unit Tests**: Test individual components
2. **Integration Tests**: Test component interactions
3. **System Tests**: Test complete system functionality
4. **Security Tests**: Test security features
5. **Performance Tests**: Test performance characteristics

### Testing Types

- **Functional Testing**: Test functionality
- **Security Testing**: Test security features
- **Performance Testing**: Test performance
- **Compatibility Testing**: Test cross-platform compatibility
- **Regression Testing**: Test for regressions

## Unit Testing

### Basic Unit Tests

```rust
use path_security::{PathValidator, ValidationResult};

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_safe_path_validation() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let safe_path = "/safe/path/to/file.txt";
        assert!(validator.validate_path(safe_path).is_ok());
    }

    #[test]
    fn test_dangerous_path_validation() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let dangerous_path = "../../../etc/passwd";
        assert!(validator.validate_path(dangerous_path).is_err());
    }

    #[test]
    fn test_encoding_attack_detection() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let encoding_attack = "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd";
        assert!(validator.validate_path(encoding_attack).is_err());
    }

    #[test]
    fn test_unicode_attack_detection() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let unicode_attack = "..\u002f..\u002f..\u002fetc\u002fpasswd";
        assert!(validator.validate_path(unicode_attack).is_err());
    }
}
```

### Advanced Unit Tests

```rust
use path_security::{PathValidator, ValidationResult, SecurityConfig};

#[cfg(test)]
mod advanced_tests {
    use super::*;

    #[test]
    fn test_comprehensive_security_config() {
        let security_config = SecurityConfig::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true)
            .with_project_name_validation(true)
            .with_filename_validation(true)
            .with_cross_platform_validation(true);

        let validator = PathValidator::new()
            .with_security_config(security_config);

        // Test various attack vectors
        let attack_vectors = vec![
            "../../../etc/passwd",
            "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd",
            "..\u002f..\u002f..\u002fetc\u002fpasswd",
            "CON",
            "PRN",
            "AUX",
            "NUL",
        ];

        for attack in attack_vectors {
            assert!(validator.validate_path(attack).is_err());
        }
    }

    #[test]
    fn test_performance_config() {
        let performance_config = PerformanceConfig::new()
            .with_caching_enabled(true)
            .with_parallel_processing_enabled(true)
            .with_lazy_evaluation_enabled(true)
            .with_memory_optimization_enabled(true);

        let validator = PathValidator::new()
            .with_performance_config(performance_config);

        // Test performance characteristics
        let start = std::time::Instant::now();
        for _ in 0..1000 {
            let _ = validator.validate_path("/safe/path/to/file.txt");
        }
        let duration = start.elapsed();
        assert!(duration.as_millis() < 100); // Should complete in less than 100ms
    }

    #[test]
    fn test_monitoring_config() {
        let monitoring_config = MonitoringConfig::new()
            .with_security_monitoring(true)
            .with_performance_monitoring(true)
            .with_error_monitoring(true)
            .with_threat_monitoring(true);

        let validator = PathValidator::new()
            .with_monitoring_config(monitoring_config);

        // Test monitoring functionality
        let result = validator.validate_path("../../../etc/passwd");
        assert!(result.is_err());
        // Verify monitoring data is collected
        let monitoring_data = validator.get_monitoring_data();
        assert!(monitoring_data.is_some());
    }
}
```

## Integration Testing

### Web Application Integration

```rust
use path_security::{PathValidator, WebIntegrationConfig};

#[cfg(test)]
mod web_integration_tests {
    use super::*;

    #[test]
    fn test_web_application_integration() {
        let web_config = WebIntegrationConfig::new()
            .with_web_security(true)
            .with_api_security(true)
            .with_file_upload_security(true)
            .with_path_validation(true);

        let validator = PathValidator::new()
            .with_web_integration_config(web_config);

        // Test web application scenarios
        let web_paths = vec![
            "/uploads/user-file.txt",
            "/static/css/style.css",
            "/api/v1/data.json",
            "/admin/dashboard.html",
        ];

        for path in web_paths {
            assert!(validator.validate_path(path).is_ok());
        }

        // Test dangerous web paths
        let dangerous_web_paths = vec![
            "../../../etc/passwd",
            "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd",
            "..\u002f..\u002f..\u002fetc\u002fpasswd",
        ];

        for path in dangerous_web_paths {
            assert!(validator.validate_path(path).is_err());
        }
    }

    #[test]
    fn test_api_integration() {
        let api_config = APIIntegrationConfig::new()
            .with_api_security(true)
            .with_endpoint_security(true)
            .with_parameter_security(true)
            .with_path_validation(true);

        let validator = PathValidator::new()
            .with_api_integration_config(api_config);

        // Test API parameters
        let api_params = vec![
            "file=document.pdf",
            "path=/uploads/file.txt",
            "resource=api/data.json",
        ];

        for param in api_params {
            assert!(validator.validate_path(param).is_ok());
        }
    }
}
```

### File System Integration

```rust
use path_security::{PathValidator, FileSystemIntegrationConfig};

#[cfg(test)]
mod filesystem_integration_tests {
    use super::*;

    #[test]
    fn test_file_system_integration() {
        let fs_config = FileSystemIntegrationConfig::new()
            .with_file_system_security(true)
            .with_directory_traversal_protection(true)
            .with_file_access_control(true)
            .with_path_validation(true);

        let validator = PathValidator::new()
            .with_file_system_integration_config(fs_config);

        // Test file system paths
        let fs_paths = vec![
            "/var/log/application.log",
            "/tmp/temporary-file.txt",
            "/home/user/documents/file.pdf",
            "/usr/local/bin/script.sh",
        ];

        for path in fs_paths {
            assert!(validator.validate_path(path).is_ok());
        }

        // Test dangerous file system paths
        let dangerous_fs_paths = vec![
            "../../../etc/passwd",
            "../../../var/log/system.log",
            "../../../home/user/.ssh/id_rsa",
        ];

        for path in dangerous_fs_paths {
            assert!(validator.validate_path(path).is_err());
        }
    }

    #[test]
    fn test_cross_platform_integration() {
        let cross_platform_config = CrossPlatformIntegrationConfig::new()
            .with_windows_integration(true)
            .with_unix_integration(true)
            .with_macos_integration(true)
            .with_path_validation(true);

        let validator = PathValidator::new()
            .with_cross_platform_integration_config(cross_platform_config);

        // Test cross-platform paths
        let cross_platform_paths = vec![
            "C:\\Windows\\System32\\file.txt",
            "/usr/local/bin/script.sh",
            "/Applications/App.app/Contents/Resources/file.txt",
        ];

        for path in cross_platform_paths {
            assert!(validator.validate_path(path).is_ok());
        }
    }
}
```

## Security Testing

### Penetration Testing

```rust
use path_security::{PathValidator, PenetrationTestConfig};

#[cfg(test)]
mod penetration_tests {
    use super::*;

    #[test]
    fn test_directory_traversal_attacks() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let traversal_attacks = vec![
            "../../../etc/passwd",
            "..\\..\\..\\etc\\passwd",
            "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd",
            "%252e%252e%252f%252e%252e%252f%252e%252e%252fetc%252fpasswd",
            "..\u002f..\u002f..\u002fetc\u002fpasswd",
            "..\u2215..\u2215..\u2215etc\u2215passwd",
        ];

        for attack in traversal_attacks {
            assert!(validator.validate_path(attack).is_err());
        }
    }

    #[test]
    fn test_encoding_attacks() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let encoding_attacks = vec![
            "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd",
            "%252e%252e%252f%252e%252e%252f%252e%252e%252fetc%252fpasswd",
            "%c0%ae%c0%ae%c0%af%c0%ae%c0%ae%c0%af%c0%ae%c0%ae%c0%afetc%c0%afpasswd",
        ];

        for attack in encoding_attacks {
            assert!(validator.validate_path(attack).is_err());
        }
    }

    #[test]
    fn test_unicode_attacks() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let unicode_attacks = vec![
            "..\u002f..\u002f..\u002fetc\u002fpasswd",
            "..\u2215..\u2215..\u2215etc\u2215passwd",
            "..\u2044..\u2044..\u2044etc\u2044passwd",
        ];

        for attack in unicode_attacks {
            assert!(validator.validate_path(attack).is_err());
        }
    }
}
```

### Vulnerability Testing

```rust
use path_security::{PathValidator, VulnerabilityTestConfig};

#[cfg(test)]
mod vulnerability_tests {
    use super::*;

    #[test]
    fn test_reserved_name_attacks() {
        let validator = PathValidator::new()
            .with_project_name_validation(true)
            .with_filename_validation(true)
            .with_reserved_name_detection(true);

        let reserved_names = vec![
            "CON",
            "PRN",
            "AUX",
            "NUL",
            "COM1",
            "COM2",
            "COM3",
            "COM4",
            "COM5",
            "COM6",
            "COM7",
            "COM8",
            "COM9",
            "LPT1",
            "LPT2",
            "LPT3",
            "LPT4",
            "LPT5",
            "LPT6",
            "LPT7",
            "LPT8",
            "LPT9",
        ];

        for name in reserved_names {
            assert!(validator.validate_project_name(name).is_err());
            assert!(validator.validate_filename(name).is_err());
        }
    }

    #[test]
    fn test_special_character_attacks() {
        let validator = PathValidator::new()
            .with_filename_validation(true)
            .with_special_character_detection(true);

        let special_characters = vec![
            "file<name>.txt",
            "file>name>.txt",
            "file|name>.txt",
            "file:name>.txt",
            "file\"name>.txt",
            "file*name>.txt",
            "file?name>.txt",
            "file\\name>.txt",
            "file/name>.txt",
        ];

        for filename in special_characters {
            assert!(validator.validate_filename(filename).is_err());
        }
    }
}
```

## Performance Testing

### Load Testing

```rust
use path_security::{PathValidator, LoadTestConfig};

#[cfg(test)]
mod load_tests {
    use super::*;

    #[test]
    fn test_high_volume_validation() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let start = std::time::Instant::now();
        let mut success_count = 0;
        let mut error_count = 0;

        for i in 0..10000 {
            let path = format!("/safe/path/to/file_{}.txt", i);
            match validator.validate_path(&path) {
                Ok(_) => success_count += 1,
                Err(_) => error_count += 1,
            }
        }

        let duration = start.elapsed();
        println!("Processed 10000 paths in {:?}", duration);
        println!("Success: {}, Errors: {}", success_count, error_count);
        
        assert!(duration.as_millis() < 1000); // Should complete in less than 1 second
        assert_eq!(success_count, 10000);
        assert_eq!(error_count, 0);
    }

    #[test]
    fn test_concurrent_validation() {
        use std::sync::Arc;
        use std::thread;

        let validator = Arc::new(PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true));

        let mut handles = vec![];

        for i in 0..10 {
            let validator = Arc::clone(&validator);
            let handle = thread::spawn(move || {
                for j in 0..1000 {
                    let path = format!("/safe/path/to/file_{}_{}.txt", i, j);
                    assert!(validator.validate_path(&path).is_ok());
                }
            });
            handles.push(handle);
        }

        for handle in handles {
            handle.join().unwrap();
        }
    }
}
```

### Stress Testing

```rust
use path_security::{PathValidator, StressTestConfig};

#[cfg(test)]
mod stress_tests {
    use super::*;

    #[test]
    fn test_memory_usage() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let initial_memory = get_memory_usage();
        
        // Process many paths
        for i in 0..100000 {
            let path = format!("/safe/path/to/file_{}.txt", i);
            let _ = validator.validate_path(&path);
        }

        let final_memory = get_memory_usage();
        let memory_increase = final_memory - initial_memory;
        
        // Memory increase should be reasonable
        assert!(memory_increase < 100 * 1024 * 1024); // Less than 100MB
    }

    #[test]
    fn test_cpu_usage() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let start = std::time::Instant::now();
        
        // Process many paths
        for i in 0..100000 {
            let path = format!("/safe/path/to/file_{}.txt", i);
            let _ = validator.validate_path(&path);
        }

        let duration = start.elapsed();
        let throughput = 100000.0 / duration.as_secs_f64();
        
        // Should process at least 1000 paths per second
        assert!(throughput > 1000.0);
    }
}
```

## Compatibility Testing

### Cross-Platform Testing

```rust
use path_security::{PathValidator, CrossPlatformTestConfig};

#[cfg(test)]
mod cross_platform_tests {
    use super::*;

    #[test]
    fn test_windows_paths() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true)
            .with_windows_specific_validation(true);

        let windows_paths = vec![
            "C:\\Windows\\System32\\file.txt",
            "C:\\Users\\User\\Documents\\file.txt",
            "C:\\Program Files\\App\\file.txt",
        ];

        for path in windows_paths {
            assert!(validator.validate_path(path).is_ok());
        }

        let dangerous_windows_paths = vec![
            "C:\\..\\..\\..\\etc\\passwd",
            "C:\\..\\..\\..\\var\\log\\system.log",
        ];

        for path in dangerous_windows_paths {
            assert!(validator.validate_path(path).is_err());
        }
    }

    #[test]
    fn test_unix_paths() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true)
            .with_unix_specific_validation(true);

        let unix_paths = vec![
            "/usr/local/bin/script.sh",
            "/var/log/application.log",
            "/home/user/documents/file.txt",
        ];

        for path in unix_paths {
            assert!(validator.validate_path(path).is_ok());
        }

        let dangerous_unix_paths = vec![
            "../../../etc/passwd",
            "../../../var/log/system.log",
        ];

        for path in dangerous_unix_paths {
            assert!(validator.validate_path(path).is_err());
        }
    }
}
```

## Test Automation

### Continuous Integration

```rust
use path_security::{PathValidator, CIConfig};

#[cfg(test)]
mod ci_tests {
    use super::*;

    #[test]
    fn test_ci_pipeline() {
        let ci_config = CIConfig::new()
            .with_automated_testing(true)
            .with_continuous_testing(true)
            .with_test_optimization(true)
            .with_test_monitoring(true);

        let validator = PathValidator::new()
            .with_ci_config(ci_config);

        // Run comprehensive test suite
        test_basic_functionality();
        test_security_features();
        test_performance_characteristics();
        test_cross_platform_compatibility();
    }

    fn test_basic_functionality() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        assert!(validator.validate_path("/safe/path/to/file.txt").is_ok());
        assert!(validator.validate_path("../../../etc/passwd").is_err());
    }

    fn test_security_features() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let attacks = vec![
            "../../../etc/passwd",
            "%2e%2e%2f%2e%2e%2f%2e%2e%2fetc%2fpasswd",
            "..\u002f..\u002f..\u002fetc\u002fpasswd",
        ];

        for attack in attacks {
            assert!(validator.validate_path(attack).is_err());
        }
    }

    fn test_performance_characteristics() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true);

        let start = std::time::Instant::now();
        for _ in 0..1000 {
            let _ = validator.validate_path("/safe/path/to/file.txt");
        }
        let duration = start.elapsed();
        assert!(duration.as_millis() < 100);
    }

    fn test_cross_platform_compatibility() {
        let validator = PathValidator::new()
            .with_traversal_detection(true)
            .with_encoding_detection(true)
            .with_unicode_detection(true)
            .with_cross_platform_validation(true);

        let paths = vec![
            "C:\\Windows\\System32\\file.txt",
            "/usr/local/bin/script.sh",
            "/Applications/App.app/Contents/Resources/file.txt",
        ];

        for path in paths {
            assert!(validator.validate_path(path).is_ok());
        }
    }
}
```

## Conclusion

This comprehensive testing strategy ensures that the Path Security module is robust, secure, and performant across all supported platforms and use cases. By implementing these testing practices, you can ensure that your path security implementation meets the highest standards of quality and security.

Key testing areas:

1. **Unit Testing**: Test individual components
2. **Integration Testing**: Test component interactions
3. **Security Testing**: Test security features
4. **Performance Testing**: Test performance characteristics
5. **Compatibility Testing**: Test cross-platform compatibility
6. **Test Automation**: Automate testing processes