diff --git a/.eslintrc b/.eslintrc
new file mode 100644
index 0000000..3b1360e
--- /dev/null
+++ b/.eslintrc
@@ -0,0 +1,3 @@
+{
+  "extends": "think"
+}
\ No newline at end of file
diff --git a/Dockerfile b/Dockerfile
index 4bbaabc..21f9e02 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -7,7 +7,7 @@ LABEL maintainer="lizheming <i@imnerd.org>" \
 
 WORKDIR /wechat
 COPY package.json /wechat/package.json
-RUN npm install --registry=https://registry.npm.taobao.org
+RUN npm install --production --registry=https://registry.npm.taobao.org
 
 COPY index.js /wechat/index.js
 ENTRYPOINT [ "node", "/wechat/index.js" ]
\ No newline at end of file
diff --git a/index.js b/index.js
index 2edf153..c6dddd7 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,4 @@
+const process = require('process');
 const render = require('drone-render');
 const request = require('request-promise-native');
 
@@ -16,4 +17,4 @@ request({
     text: PLUGIN_TITLE,
     desp: render(PLUGIN_MESSAGE)
   }
-});
\ No newline at end of file
+});
diff --git a/package.json b/package.json
index 65e90a5..daa4f3e 100644
--- a/package.json
+++ b/package.json
@@ -4,7 +4,9 @@
   "description": "drone wechat notification plugin",
   "main": "index.js",
   "scripts": {
-    "test": "\"\""
+    "test": "npm run eslint && npm run test-cov",
+    "test-cov": "nyc ava test.js && nyc report --reporter=html",
+    "eslint": "eslint index.js"
   },
   "repository": {
     "type": "git",
@@ -26,5 +28,12 @@
     "drone-render": "^1.0.0",
     "request": "^2.83.0",
     "request-promise-native": "^1.0.5"
+  },
+  "devDependencies": {
+    "ava": "^0.24.0",
+    "eslint": "^4.14.0",
+    "eslint-config-think": "^1.0.2",
+    "mock-require": "^2.0.2",
+    "nyc": "^11.4.1"
   }
 }
diff --git a/test.js b/test.js
new file mode 100644
index 0000000..476f6bb
--- /dev/null
+++ b/test.js
@@ -0,0 +1,51 @@
+const {test} = require('ava');
+const mock = require('mock-require');
+
+const SCKEY = 'testsckey';
+const SCKEY2 = 'testsckey2';
+const TITLE = 'test for title';
+const MESSAGE = 'test for message';
+
+test('send wechat', async t => {
+  t.plan(2);
+
+  mock('process', {
+    env: {
+      PLUGIN_SCKEY: SCKEY,
+      PLUGIN_TITLE: TITLE,
+      PLUGIN_MESSAGE: MESSAGE
+    }
+  });
+  mock('drone-render', text => {
+    t.is(text, MESSAGE);
+    return text + '1';
+  });
+  mock('request-promise-native', obj => {
+    t.deepEqual(obj, {
+      url: `https://sc.ftqq.com/${SCKEY}.send`,
+      qs: {
+        text: TITLE,
+        desp: MESSAGE + '1'
+      }
+    });
+  });
+
+  mock.reRequire('./index.js');
+  mock.stopAll();
+});
+
+test('send wechat with SERVER_CHAN_KEY', async t => {
+  mock('process', {
+    env: {
+      SERVER_CHAN_KEY: SCKEY2,
+      PLUGIN_TITLE: TITLE,
+      PLUGIN_MESSAGE: MESSAGE
+    }
+  });
+  mock('request-promise-native', obj => {
+    t.is(obj.url, `https://sc.ftqq.com/${SCKEY2}.send`);
+  });
+
+  mock.reRequire('./index.js');
+  mock.stopAll();
+});