diff --git a/Makefile b/Makefile
index 8ade3df..f9cd9c6 100644
--- a/Makefile
+++ b/Makefile
@@ -9,6 +9,17 @@ RUST_TOOL = gcr.io/$(GCLOUD_PROJECT)/ngx-rust-tool:${RUST_COMPILER_TAG}
 export ROOT_DIR=${PWD}
 
 
+
+darwin-build-nginx:
+	cd nginx/${DARWIN_NGINX}; \
+	./configure --prefix=${PWD}/nginx/install; \
+	make; \
+	make install
+
+
+darwin-install-nginx:   darwin-source darwin-configure
+
+
 setup-nginx:
 	mkdir -p nginx
 
diff --git a/config/nginx.conf b/config/nginx.conf
new file mode 100644
index 0000000..8889ed7
--- /dev/null
+++ b/config/nginx.conf
@@ -0,0 +1,43 @@
+#load_module modules/ngx_http_rust_module.so;
+
+#user  nobody;
+worker_processes  1;
+
+error_log  logs/error.log;
+#error_log  logs/error.log  notice;
+#error_log  logs/error.log  info;
+
+#pid        logs/nginx.pid;
+
+
+events {
+    worker_connections  1024;
+}
+
+
+http {
+    include       mime.types;
+    default_type  application/octet-stream;
+
+
+    # rust test;
+
+
+
+    server {
+        listen       8080;
+        server_name  localhost;
+
+        #charset koi8-r;
+
+        #access_log  logs/host.access.log  main;
+
+        location / {
+            root   html;
+            index  index.html index.htm;
+        }
+
+
+	}
+
+}
diff --git a/src/lib.rs b/src/lib.rs
index 7a09f00..9a6afd9 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -2,6 +2,6 @@
 
 pub mod bindings;
 pub mod nginx_http;
-
+pub mod nginx;
 
 
diff --git a/src/nginx.rs b/src/nginx.rs
new file mode 100644
index 0000000..5012b86
--- /dev/null
+++ b/src/nginx.rs
@@ -0,0 +1,83 @@
+/**
+ * harness to test nginx
+ */
+
+use std::process::Command;
+use std::process::Output;
+use std::io::Result;
+use std::env;
+use std::fs;
+
+const NGINX_BIN: &str = "nginx/install/sbin/nginx";
+
+pub struct Nginx  {
+
+    pub install_path: String            // install path
+}
+
+
+impl Nginx  {
+
+    pub fn new(path: String) -> Nginx  {
+        Nginx { install_path: path }
+    }
+
+    // create nginx with default
+    pub fn default() -> Nginx  {
+        let path = env::current_dir().unwrap();
+        let nginx_bin_path = format!("{}/{}",path.display(),NGINX_BIN);
+        Nginx { install_path: nginx_bin_path}
+    }
+
+
+    pub fn cmd(&mut self, args: &[&str] )  -> Result<Output> {
+        let result =  Command::new(&self.install_path)
+            .args(args)
+            .output();
+
+        match result  {
+            Err(e)  =>  {
+                return Err(e);
+            },
+
+            Ok(output) => {
+                println!("status: {}", output.status);
+                println!("stdout: {}", String::from_utf8_lossy(&output.stdout));
+                println!("stderr: {}", String::from_utf8_lossy(&output.stderr));
+                return Ok(output);
+            }
+        }
+
+    }
+
+    // complete stop the nginx binary
+    pub fn stop(&mut self)  -> Result<Output> {
+        self.cmd(&["-s","stop"])
+    }
+
+    // start the nginx binary
+    pub fn start(&mut self) -> Result<Output> {
+        self.cmd(&[])
+    }
+
+
+    // make sure we stop existing nginx and start new master process
+    // intentinally ignore failure in stop
+    pub fn restart(&mut self) -> Result<Output> {
+
+        self.stop();
+        self.start()
+    }
+
+    // replace config with another config
+    pub fn replace_config(&mut self, path: &str) {
+
+    }
+
+
+}
+
+
+
+
+
diff --git a/tests/log_test.rs b/tests/log_test.rs
index c4327cb..6863e1d 100644
--- a/tests/log_test.rs
+++ b/tests/log_test.rs
@@ -1,16 +1,20 @@
 extern crate ngx_rust;
 
-
 #[cfg(test)]
 mod tests {
 
+    use std::env;
+    use ngx_rust::nginx::Nginx;
 
+    const NGINX_BIN: &str = "nginx/install/sbin/nginx";
 
     #[test]
     fn test() {
 
-        assert_eq!(1,1);
+        let mut nginx = Nginx::default();
+        let output =  nginx.restart().expect("fail to start");
 
+        assert!(output.status.success());
 
     }