feat(test): add tests

.env.example

@@ -0,0 +1 @@
+DATABASE_URL=postgres://user:password@ip:port/db

src/model.rs

@@ -36,3 +36,19 @@ pub struct LogRecord {
     pub module: String,
     pub trace_id: Option<String>,
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn test_level_ordering() {
+        assert!(LogLevel::ERROR > LogLevel::INFO);
+        assert!(LogLevel::DEBUG < LogLevel::FATAL);
+    }
+
+    #[test]
+    fn test_level_display() {
+        assert_eq!(LogLevel::INFO.to_string(), "INFO");
+    }
+}

tests/db_test.rs

@@ -0,0 +1,61 @@
+use std::env;
+
+use chrono::Utc;
+// tests/db_test.rs
+use dotenv::dotenv;
+use rust_logger::model::{LogLevel, LogRecord};
+use rust_logger::outputs::LogOutput;
+use rust_logger::outputs::postgres::PostgresOutput;
+use sqlx::postgres::PgPoolOptions;
+
+#[sqlx::test] // sqlx 提供的强大宏，自动为每个测试创建一个临时数据库
+async fn test_postgres_write() {
+    dotenv().ok();
+    let db_url = env::var("DATABASE_URL").expect("DATABASE_URL must be set");
+    let pool = PgPoolOptions::new()
+        .max_connections(5)
+        .connect(&db_url)
+        .await
+        .unwrap();
+    // 1. 准备表结构 (需要在测试库里建表)
+    sqlx::query(
+        r#"
+        CREATE TABLE IF NOT EXISTS app_logs (
+            id BIGSERIAL PRIMARY KEY,
+            service_name VARCHAR(50),
+            log_level VARCHAR(10),
+            message TEXT,
+            module VARCHAR(100),
+            created_at TIMESTAMPTZ,
+            trace_id VARCHAR(64)
+        )
+    "#,
+    )
+    .execute(&pool)
+    .await
+    .unwrap();
+
+    // 2. 初始化 Output
+    let output = PostgresOutput::new(pool.clone());
+
+    // 3. 写入日志
+    // ... 构造 record ...
+    let record = LogRecord {
+        service_name: "db_test".into(),
+        timestamp: Utc::now(),
+        level: LogLevel::INFO,
+        message: "Hello Integration Test Db".into(),
+        module: "tests".into(),
+        trace_id: Some("123-abc".into()),
+    };
+    output.write(&record).await;
+
+    // 4. 验证是否写入
+    let count: i64 =
+        sqlx::query_scalar("SELECT count(*) FROM app_logs WHERE service_name = 'db_test'")
+            .fetch_one(&pool)
+            .await
+            .unwrap();
+
+    assert!(count > 1);
+}

tests/file_test.rs

@@ -0,0 +1,47 @@
+// tests/file_test.rs
+use chrono::Utc;
+use rust_logger::model::{LogLevel, LogRecord};
+use rust_logger::outputs::LogOutput;
+use rust_logger::outputs::file::FileOutput;
+use std::fs;
+use std::path::Path;
+
+#[tokio::test] // 使用 tokio 的测试宏
+async fn test_file_output_write() {
+    let dir = "test_logs";
+    let prefix = "test-service";
+
+    // 1. 清理环境 (确保之前跑剩下的文件删掉)
+    if Path::new(dir).exists() {
+        fs::remove_dir_all(dir).unwrap();
+    }
+
+    // 2. 初始化 Output
+    let output = FileOutput::new(dir, prefix)
+        .await
+        .expect("Failed to create output");
+
+    // 3. 构造一条假日志
+    let record = LogRecord {
+        service_name: "file_test".into(),
+        timestamp: Utc::now(),
+        level: LogLevel::INFO,
+        message: "Hello Integration Test File".into(),
+        module: "tests".into(),
+        trace_id: Some("123-abc".into()),
+    };
+
+    // 4. 写入
+    output.write(&record).await;
+
+    // 5. 验证文件是否存在且内容正确
+    let mut entries = fs::read_dir(dir).unwrap();
+    let entry = entries.next().unwrap().unwrap();
+    let content = fs::read_to_string(entry.path()).unwrap();
+
+    assert!(content.contains("Hello Integration Test"));
+    assert!(content.contains("[INFO]"));
+
+    // 6. 清理
+    fs::remove_dir_all(dir).unwrap();
+}