openlark 0.15.0

use fake::{Fake, Faker};
use open_lark::core::http::Transport;
use proptest::prelude::*;
use quickcheck::{quickcheck, TestResult};
use serde_json::{json, Value};
use std::collections::HashMap;
use std::time::Duration;

/// HTTP 客户端健壮性测试
/// 
/// 测试网络请求处理的边界条件：
/// - 网络超时和重试机制
/// - 大载荷处理
/// - 恶意响应处理
/// - 边界状态码处理
/// - URL 和头部验证

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

    /// 生成有效 URL 的策略
    fn valid_url_strategy() -> impl Strategy<Value = String> {
        prop_oneof![
            "https://api\\.feishu\\.cn/open-api/v[12]/[a-zA-Z/]+",
            "https://open\\.feishu\\.cn/open-api/v[12]/[a-zA-Z/]+",
        ]
    }

    /// 生成有效 HTTP 方法的策略
    fn http_method_strategy() -> impl Strategy<Value = reqwest::Method> {
        prop_oneof![
            Just(reqwest::Method::GET),
            Just(reqwest::Method::POST),
            Just(reqwest::Method::PUT),
            Just(reqwest::Method::DELETE),
            Just(reqwest::Method::PATCH),
        ]
    }

    /// 生成任意头部映射的策略
    fn arbitrary_headers() -> impl Strategy<Value = HashMap<String, String>> {
        prop::collection::hash_map(
            "[a-zA-Z0-9_-]{1,30}",
            "[\\x20-\\x7E]{0,200}", // 可打印 ASCII 字符
            0..20
        )
    }

    /// 属性测试：URL 构建应该处理各种输入
    proptest! {
        #[test]
        fn url_building_handles_various_inputs(
            base_url in valid_url_strategy(),
            path in "[a-zA-Z0-9/_-]{1,100}",
        ) {
            let full_url = format!("{}/{}", base_url.trim_end_matches('/'), path.trim_start_matches('/'));
            
            // URL 解析不应该崩溃
            let parsed = url::Url::parse(&full_url);
            
            // 如果解析成功，URL 应该是有效的
            if let Ok(url) = parsed {
                prop_assert!(url.scheme() == "https");
                prop_assert!(url.host_str().is_some());
            }
        }
    }

    /// 属性测试：HTTP 头部处理应该是安全的
    proptest! {
        #[test]
        fn header_handling_is_safe(headers in arbitrary_headers()) {
            let mut header_map = reqwest::header::HeaderMap::new();
            
            for (key, value) in headers {
                // 尝试插入头部 - 可能失败但不应该崩溃
                if let (Ok(name), Ok(val)) = (
                    reqwest::header::HeaderName::from_bytes(key.as_bytes()),
                    reqwest::header::HeaderValue::from_str(&value)
                ) {
                    header_map.insert(name, val);
                }
            }
            
            // 验证头部映射是有效的
            prop_assert!(header_map.len() <= 20);
        }
    }

    /// QuickCheck 测试：查询参数编码
    #[quickcheck]
    fn query_param_encoding_is_safe(key: String, value: String) -> TestResult {
        if key.is_empty() || key.len() > 100 || value.len() > 1000 {
            return TestResult::discard();
        }
        
        let mut url = url::Url::parse("https://api.example.com/test").unwrap();
        url.query_pairs_mut().append_pair(&key, &value);
        
        let final_url = url.to_string();
        
        // URL 应该仍然是有效的
        TestResult::from_bool(url::Url::parse(&final_url).is_ok())
    }

    /// 边界条件测试：极大的请求体
    #[tokio::test]
    async fn test_large_request_body() {
        let large_data = "x".repeat(10 * 1024 * 1024); // 10MB
        let json_body = json!({"data": large_data});
        
        // 创建请求体不应该崩溃
        let body_result = serde_json::to_vec(&json_body);
        assert!(body_result.is_ok());
        
        // 验证序列化的大小
        let body = body_result.unwrap();
        assert!(body.len() > 10 * 1024 * 1024);
    }

    /// 边界条件测试：极多的查询参数
    #[test]
    fn test_many_query_parameters() {
        let mut url = url::Url::parse("https://api.example.com/test").unwrap();
        
        // 添加大量查询参数
        for i in 0..1000 {
            url.query_pairs_mut().append_pair(&format!("param_{}", i), &format!("value_{}", i));
        }
        
        let final_url = url.to_string();
        assert!(final_url.len() > 10000); // 应该生成很长的 URL
        
        // URL 应该仍然可解析
        assert!(url::Url::parse(&final_url).is_ok());
    }

    /// 状态码边界测试
    #[test]
    fn test_status_code_boundaries() {
        let boundary_codes = vec![
            100, 101, 102, // 信息性响应
            200, 201, 202, 204, 206, // 成功响应
            300, 301, 302, 304, 307, 308, // 重定向响应
            400, 401, 403, 404, 409, 410, 422, 429, // 客户端错误
            500, 501, 502, 503, 504, 505, // 服务器错误
            599, // 边界值
        ];
        
        for code in boundary_codes {
            let status = reqwest::StatusCode::from_u16(code);
            assert!(status.is_ok(), "Status code {} should be valid", code);
            
            let status = status.unwrap();
            // 验证状态码分类
            match code {
                100..=199 => assert!(status.is_informational()),
                200..=299 => assert!(status.is_success()),
                300..=399 => assert!(status.is_redirection()),
                400..=499 => assert!(status.is_client_error()),
                500..=599 => assert!(status.is_server_error()),
                _ => unreachable!(),
            }
        }
    }

    /// 超时处理测试
    #[tokio::test]
    async fn test_timeout_handling() {
        let timeout_durations = vec![
            Duration::from_millis(1),    // 极短超时
            Duration::from_millis(100),  // 短超时
            Duration::from_secs(1),      // 正常超时
            Duration::from_secs(30),     // 长超时
        ];
        
        for timeout in timeout_durations {
            let client = reqwest::Client::builder()
                .timeout(timeout)
                .build();
                
            assert!(client.is_ok(), "Client should build with timeout: {:?}", timeout);
        }
    }

    /// 重试逻辑测试
    #[test]
    fn test_retry_logic_boundaries() {
        let retry_counts = vec![0, 1, 3, 5, 10, 100];
        
        for max_retries in retry_counts {
            // 模拟重试逻辑
            let mut attempts = 0;
            let mut current_retry = 0;
            
            while current_retry <= max_retries && attempts < 1000 {
                attempts += 1;
                
                // 模拟失败
                if attempts < max_retries + 1 {
                    current_retry += 1;
                    continue;
                }
                
                break;
            }
            
            assert_eq!(attempts, max_retries + 1, "Retry logic for {} retries", max_retries);
        }
    }

    /// 并发请求测试
    #[tokio::test]
    async fn test_concurrent_request_handling() {
        let client = reqwest::Client::new();
        let mut handles = vec![];
        
        // 创建多个并发的虚拟请求构建
        for i in 0..100 {
            let client_clone = client.clone();
            let handle = tokio::spawn(async move {
                // 只是构建请求，不实际发送
                let request = client_clone
                    .get(&format!("https://httpbin.org/delay/{}", i % 5))
                    .build();
                
                request.is_ok()
            });
            handles.push(handle);
        }
        
        // 等待所有任务完成
        for handle in handles {
            let result = handle.await;
            assert!(result.is_ok());
            assert!(result.unwrap());
        }
    }

    /// 错误恢复测试
    #[test]
    fn test_error_recovery_scenarios() {
        // 测试各种错误场景的处理
        let error_scenarios = vec![
            "invalid_url",
            "",
            "not-a-url",
            "http://", // 不完整的 URL
            "https://", // 不完整的 URL
            "ftp://example.com", // 不支持的协议
            "https://💩.com", // Unicode 域名
        ];
        
        for scenario in error_scenarios {
            let url_result = url::Url::parse(scenario);
            // 错误应该被优雅处理，不应该崩溃
            let _is_error = url_result.is_err();
        }
    }
}

/// 模拟网络条件的测试
mod network_condition_tests {
    use super::*;
    use std::sync::{Arc, Mutex};
    use std::sync::atomic::{AtomicUsize, Ordering};

    /// 模拟网络延迟的测试结构
    struct NetworkSimulator {
        delay_ms: Arc<Mutex<u64>>,
        failure_rate: Arc<Mutex<f64>>,
        request_count: Arc<AtomicUsize>,
    }

    impl NetworkSimulator {
        fn new() -> Self {
            Self {
                delay_ms: Arc::new(Mutex::new(0)),
                failure_rate: Arc::new(Mutex::new(0.0)),
                request_count: Arc::new(AtomicUsize::new(0)),
            }
        }

        async fn simulate_request(&self) -> Result<String, String> {
            self.request_count.fetch_add(1, Ordering::SeqCst);
            
            // 模拟网络延迟
            let delay = *self.delay_ms.lock().unwrap();
            if delay > 0 {
                tokio::time::sleep(Duration::from_millis(delay)).await;
            }
            
            // 模拟网络失败
            let failure_rate = *self.failure_rate.lock().unwrap();
            if rand::random::<f64>() < failure_rate {
                return Err("Network failure".to_string());
            }
            
            Ok("Success".to_string())
        }
    }

    /// 测试网络条件变化下的行为
    #[tokio::test]
    async fn test_network_conditions() {
        let simulator = NetworkSimulator::new();
        
        // 测试正常条件
        let result = simulator.simulate_request().await;
        assert!(result.is_ok());
        
        // 测试高延迟条件
        *simulator.delay_ms.lock().unwrap() = 1000;
        let start = std::time::Instant::now();
        let _result = simulator.simulate_request().await;
        let elapsed = start.elapsed();
        assert!(elapsed >= Duration::from_millis(1000));
        
        // 测试高失败率条件
        *simulator.failure_rate.lock().unwrap() = 0.9;
        let mut failures = 0;
        let attempts = 10;
        
        for _ in 0..attempts {
            if simulator.simulate_request().await.is_err() {
                failures += 1;
            }
        }
        
        // 在 90% 失败率下，应该有大部分请求失败
        assert!(failures > attempts / 2, "Expected more failures with 90% failure rate");
    }

    /// 测试指数退避重试
    #[tokio::test]
    async fn test_exponential_backoff() {
        let mut delay = Duration::from_millis(100);
        let max_delay = Duration::from_secs(10);
        let backoff_factor = 2.0;
        
        for attempt in 0..10 {
            let expected_delay = Duration::from_millis(
                (100.0 * backoff_factor.powi(attempt)).min(max_delay.as_millis() as f64) as u64
            );
            
            assert!(delay <= max_delay, "Delay should be capped at max_delay");
            
            if attempt > 0 {
                // 延迟应该增加（除非达到上限）
                let prev_expected = Duration::from_millis(
                    (100.0 * backoff_factor.powi(attempt - 1)).min(max_delay.as_millis() as f64) as u64
                );
                if expected_delay < max_delay && prev_expected < max_delay {
                    assert!(expected_delay > prev_expected, "Exponential backoff should increase delay");
                }
            }
            
            delay = expected_delay;
        }
    }
}

/// 内存和资源管理测试
mod resource_management_tests {
    use super::*;

    /// 测试内存泄漏预防
    #[tokio::test]
    async fn test_memory_leak_prevention() {
        let client = reqwest::Client::new();
        
        // 创建大量请求构建器但不发送
        for i in 0..1000 {
            let _request = client
                .post("https://httpbin.org/post")
                .json(&json!({"data": format!("test_{}", i)}))
                .build();
            
            // 请求构建器应该能够被正确释放
        }
        
        // 如果存在内存泄漏，这个测试可能会消耗过多内存
    }

    /// 测试连接池管理
    #[test]
    fn test_connection_pool_limits() {
        let pool_sizes = vec![1, 10, 100, 1000];
        
        for pool_size in pool_sizes {
            let client_result = reqwest::Client::builder()
                .pool_max_idle_per_host(pool_size)
                .build();
                
            assert!(client_result.is_ok(), "Client should build with pool size: {}", pool_size);
        }
    }

    /// 测试资源清理
    #[tokio::test]
    async fn test_resource_cleanup() {
        let clients = (0..100).map(|_| reqwest::Client::new()).collect::<Vec<_>>();
        
        // 显式释放客户端
        drop(clients);
        
        // 创建新的客户端应该仍然有效
        let new_client = reqwest::Client::new();
        let _request = new_client.get("https://httpbin.org/get").build();
    }
}