check for puppet & browser before execute

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 node test/puppet-web-spec.js && node test/puppet-web-watchdog-spec.js"
+    , "test": "cross-env TAP_TIMEOUT=600 tap test/*-spec.js"
   }
   , "repository": {
     "type": "git"

src/puppet-web-bridge.js

@@ -60,9 +60,10 @@ class Bridge {
 
   inject() {
     log.verbose('PuppetWebBridge', 'inject()')
-    return co.call(this, function* () {
 
+    return co.call(this, function* () {
       const injectio = this.getInjectio()
+
       let retObj = yield this.execute(injectio, this.port)
       if (retObj && /^(2|3)/.test(retObj.code)) {   // HTTP Code 2XX & 3XX
         log.verbose('PuppetWebBridge', 'inject() eval(Wechaty) return code[%d] message[%s] port[%d]'
@@ -86,7 +87,6 @@ class Bridge {
       log.verbose('PuppetWebBridge', 'inject() ding success')
 
       return true
-
     })
     .catch (e => {
       log.verbose('PuppetWebBridge', 'inject() exception: %s', e.message)
@@ -208,6 +208,9 @@ class Bridge {
   }
 
   execute(script, ...args) {
+    if (!this.puppet || !this.puppet.browser) {
+      throw new Error('execute(): no puppet or no puppet.browser in bridge')
+    }
     return this.puppet.browser.execute(script, ...args)
     .catch(e => {
       log.warn('PuppetWebBridge', 'execute() exception: %s', e.message)

test/puppet-web-watchdog-spec.js

@@ -38,10 +38,10 @@ test('Puppet Web watchdog timer', function(t) {
 
     const origLogLevel = log.level
     log.level = 'silly'
-    t.pass('set log.level = silent to mute log when watchDog reset wechaty')
+    t.pass('set log.level = silent to mute log when watchDog reset wechaty temporary')
     const dong = yield waitDing(EXPECTED_DING_DATA)
     log.level = origLogLevel
-    t.equal(dong, EXPECTED_DING_DATA, 'should get EXPECTED_DING_DATA from ding after watchdog reset')
+    t.equal(dong, EXPECTED_DING_DATA, 'should get EXPECTED_DING_DATA from ding after watchdog reset, and restored log level')
   })
   .catch(e => { // Exception
     t.fail('co exception: ' + e.message)