diff --git a/.travis.yml b/.travis.yml
index 83eb97e55de35945504823ec2eb34744d32f0908..001e92b1ee0104669ad42fd0d2d77cbd36c3cbe0 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -16,5 +16,5 @@ notifications:
     urls:
       - ${GITTER_IM_URL}
     on_success: change  # options: [always|never|change] default: always
-    on_failure: always  # options: [always|never|change] default: always
+    on_failure: change  # options: [always|never|change] default: always
     on_start: never     # options: [always|never|change] default: always
diff --git a/package.json b/package.json
index 0d69936b65d66d112a8c63ce37099431fb4f48c0..d890b5a0d1b2cfec3d744224803611dbd860efcf 100644
--- a/package.json
+++ b/package.json
@@ -8,7 +8,7 @@
     "pretest": "npm run lint",
     "start": "node bin/io-bot.js",
     "demo": "node example/ding-dong-bot.js",
-    "test": "cross-env TAP_TIMEOUT=600 tap --reporter=tap test"
+    "test": "cross-env TAP_TIMEOUT=600 tap --reporter=tap test/**/*.spec.js"
   },
   "repository": {
     "type": "git",
diff --git a/src/npmlog-env.js b/src/npmlog-env.js
index b8d6d8e0e6823758d2811e1215f3073af1c29da7..f3bf99451b0f09045de35e52d3d3bcfa2c4a955a 100644
--- a/src/npmlog-env.js
+++ b/src/npmlog-env.js
@@ -1,14 +1,14 @@
-const log = require('npmlog')
-
-const level = process.env.WECHATY_LOG
-const levelRegexStr = 'silly|verbose|info|warn|error|silent'
-const levelRegex = new RegExp(levelRegexStr, 'i')
-if (levelRegex.test(level)) {
-  log.level = level.toLowerCase()
-  log.verbose('NpmLog', 'WECHATY_LOG set level to %s', level)
-}
-else if (level){
-  log.warn('NpmLog', 'env WECHATY_LOG(%s) must be one of silly|verbose|info|warn|error|silent', level)
-}
-
-module.exports = log
+const log = require('npmlog')
+
+const level = process.env.WECHATY_LOG
+const levelRegexStr = 'silly|verbose|info|warn|error|silent'
+const levelRegex = new RegExp(levelRegexStr, 'i')
+if (levelRegex.test(level)) {
+  log.level = level.toLowerCase()
+  log.verbose('NpmLog', 'WECHATY_LOG set level to %s', level)
+}
+else if (level){
+  log.warn('NpmLog', 'env WECHATY_LOG(%s) must be one of silly|verbose|info|warn|error|silent', level)
+}
+
+module.exports = log