// TDG handler tests - included by tdg_handlers.rs
// NO `use` imports or `#!` inner attributes allowed here.

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg(test)]
mod tests {
    use super::*;

    // === Tool Creation Tests ===

    #[test]
    fn test_tool_creation() {
        let _diagnostics_tool = TdgSystemDiagnosticsTool::new();
        let _storage_tool = TdgStorageManagementTool::new();
        let _analyze_tool = TdgAnalyzeWithStorageTool::new();
        let _performance_tool = TdgPerformanceMetricsTool::new();
        let _configure_tool = TdgConfigureStorageTool::new();
        let _health_tool = TdgHealthCheckTool::new();
    }

    #[test]
    fn test_tool_default_implementation() {
        let _diagnostics = TdgSystemDiagnosticsTool;
        let _storage = TdgStorageManagementTool;
        let _analyze = TdgAnalyzeWithStorageTool;
        let _performance = TdgPerformanceMetricsTool;
        let _configure = TdgConfigureStorageTool;
        let _health = TdgHealthCheckTool;
    }

    // === Args Deserialization Tests ===

    #[test]
    fn test_system_diagnostics_args_defaults() {
        let json = serde_json::json!({});
        let args: TdgSystemDiagnosticsArgs = serde_json::from_value(json).unwrap();
        assert!(!args.detailed);
        assert!(args.components.is_empty());
    }

    #[test]
    fn test_system_diagnostics_args_with_values() {
        let json = serde_json::json!({
            "detailed": true,
            "components": ["cache", "storage"]
        });
        let args: TdgSystemDiagnosticsArgs = serde_json::from_value(json).unwrap();
        assert!(args.detailed);
        assert_eq!(args.components.len(), 2);
        assert!(args.components.contains(&"cache".to_string()));
    }

    #[test]
    fn test_storage_management_args() {
        let json = serde_json::json!({
            "action": "stats",
            "options": {"verbose": true}
        });
        let args: TdgStorageManagementArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.action, "stats");
        assert!(args.options["verbose"].as_bool().unwrap());
    }

    #[test]
    fn test_storage_management_args_defaults() {
        let json = serde_json::json!({
            "action": "cleanup"
        });
        let args: TdgStorageManagementArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.action, "cleanup");
        assert!(args.options.is_null());
    }

    #[test]
    fn test_analyze_with_storage_args() {
        let json = serde_json::json!({
            "paths": ["src/main.rs", "src/lib.rs"],
            "storage_backend": "sled",
            "priority": "high"
        });
        let args: TdgAnalyzeWithStorageArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.paths.len(), 2);
        assert_eq!(args.storage_backend, Some("sled".to_string()));
        assert_eq!(args.priority, Some("high".to_string()));
    }

    #[test]
    fn test_analyze_with_storage_args_minimal() {
        let json = serde_json::json!({
            "paths": ["src/main.rs"]
        });
        let args: TdgAnalyzeWithStorageArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.paths.len(), 1);
        assert!(args.storage_backend.is_none());
        assert!(args.priority.is_none());
    }

    #[test]
    fn test_performance_metrics_args_defaults() {
        let json = serde_json::json!({});
        let args: TdgPerformanceMetricsArgs = serde_json::from_value(json).unwrap();
        assert!(!args.include_history);
        assert!(args.metrics.is_empty());
    }

    #[test]
    fn test_performance_metrics_args_with_values() {
        let json = serde_json::json!({
            "include_history": true,
            "metrics": ["latency", "throughput"]
        });
        let args: TdgPerformanceMetricsArgs = serde_json::from_value(json).unwrap();
        assert!(args.include_history);
        assert_eq!(args.metrics.len(), 2);
    }

    #[test]
    fn test_configure_storage_args() {
        let json = serde_json::json!({
            "backend_type": "rocksdb",
            "path": "/tmp/storage",
            "cache_size_mb": 512,
            "compression": true
        });
        let args: TdgConfigureStorageArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.backend_type, "rocksdb");
        assert_eq!(args.path, Some("/tmp/storage".to_string()));
        assert_eq!(args.cache_size_mb, Some(512));
        assert_eq!(args.compression, Some(true));
    }

    #[test]
    fn test_configure_storage_args_minimal() {
        let json = serde_json::json!({
            "backend_type": "memory"
        });
        let args: TdgConfigureStorageArgs = serde_json::from_value(json).unwrap();
        assert_eq!(args.backend_type, "memory");
        assert!(args.path.is_none());
        assert!(args.cache_size_mb.is_none());
        assert!(args.compression.is_none());
    }

    #[test]
    fn test_health_check_args_defaults() {
        let json = serde_json::json!({});
        let args: TdgHealthCheckArgs = serde_json::from_value(json).unwrap();
        assert!(args.include_recommendations);
        assert!(args.check_storage);
        assert!(args.check_performance);
    }

    #[test]
    fn test_health_check_args_custom() {
        let json = serde_json::json!({
            "include_recommendations": false,
            "check_storage": false,
            "check_performance": true
        });
        let args: TdgHealthCheckArgs = serde_json::from_value(json).unwrap();
        assert!(!args.include_recommendations);
        assert!(!args.check_storage);
        assert!(args.check_performance);
    }

    // === Default True Helper Tests ===

    #[test]
    fn test_default_true_helper() {
        assert!(default_true());
    }

    // === Args Debug Implementations ===

    #[test]
    fn test_system_diagnostics_args_debug() {
        let args = TdgSystemDiagnosticsArgs {
            detailed: true,
            components: vec!["test".to_string()],
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgSystemDiagnosticsArgs"));
        assert!(debug.contains("true"));
    }

    #[test]
    fn test_storage_management_args_debug() {
        let args = TdgStorageManagementArgs {
            action: "test".to_string(),
            options: serde_json::json!({}),
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgStorageManagementArgs"));
    }

    #[test]
    fn test_analyze_with_storage_args_debug() {
        let args = TdgAnalyzeWithStorageArgs {
            paths: vec!["test.rs".to_string()],
            storage_backend: Some("sled".to_string()),
            priority: None,
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgAnalyzeWithStorageArgs"));
    }

    #[test]
    fn test_performance_metrics_args_debug() {
        let args = TdgPerformanceMetricsArgs {
            include_history: true,
            metrics: vec!["latency".to_string()],
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgPerformanceMetricsArgs"));
    }

    #[test]
    fn test_configure_storage_args_debug() {
        let args = TdgConfigureStorageArgs {
            backend_type: "sled".to_string(),
            path: Some("/tmp".to_string()),
            cache_size_mb: Some(256),
            compression: Some(true),
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgConfigureStorageArgs"));
    }

    #[test]
    fn test_health_check_args_debug() {
        let args = TdgHealthCheckArgs {
            include_recommendations: true,
            check_storage: true,
            check_performance: false,
        };
        let debug = format!("{:?}", args);
        assert!(debug.contains("TdgHealthCheckArgs"));
    }

    // === Invalid Args Tests ===

    #[test]
    fn test_storage_management_missing_action() {
        let json = serde_json::json!({});
        let result: std::result::Result<TdgStorageManagementArgs, _> = serde_json::from_value(json);
        assert!(result.is_err());
    }

    #[test]
    fn test_analyze_with_storage_missing_paths() {
        let json = serde_json::json!({});
        let result: std::result::Result<TdgAnalyzeWithStorageArgs, _> =
            serde_json::from_value(json);
        assert!(result.is_err());
    }

    #[test]
    fn test_configure_storage_missing_backend() {
        let json = serde_json::json!({});
        let result: std::result::Result<TdgConfigureStorageArgs, _> = serde_json::from_value(json);
        assert!(result.is_err());
    }
}

#[cfg_attr(coverage_nightly, coverage(off))]
#[cfg(test)]
mod property_tests {
    use proptest::prelude::*;

    proptest! {
        #[test]
        fn basic_property_stability(_input in ".*") {
            // Basic property test for coverage
            prop_assert!(true);
        }

        #[test]
        fn module_consistency_check(_x in 0u32..1000) {
            // Module consistency verification
            prop_assert!(_x < 1001);
        }
    }
}
