javascript - Force protractor's onPrepare to wait for async http request - Stack Overflow

admin管理员组

文章数量:1309980

My protractor conf.js,onPrepare function needs to make a http request that looks like,

onPrepare: function(done) {
    request.get('http://pepper/sysid')
      .end(function(err, resp){
        if(err || !resp.ok){
          log("there is an error " + err.message)
          done()
        }else{
          global.sysid = resp.sysid
          done()
         }
      })

It throws error as,done is not a function

Is there any other way, that i can force the callback inside onPrepare to be invoked before my tests start execution?

My protractor conf.js,onPrepare function needs to make a http request that looks like,

onPrepare: function(done) {
    request.get('http://pepper/sysid')
      .end(function(err, resp){
        if(err || !resp.ok){
          log("there is an error " + err.message)
          done()
        }else{
          global.sysid = resp.sysid
          done()
         }
      })

It throws error as,done is not a function

Is there any other way, that i can force the callback inside onPrepare to be invoked before my tests start execution?

• javascript
• angularjs
• node.js
• asynchronous
• protractor

Share Improve this question Follow edited Dec 27, 2015 at 17:01 alecxe 474k127127 gold badges1.1k1.1k silver badges1.2k1.2k bronze badges asked Dec 27, 2015 at 16:49 user2879704user2879704

Add a ment  | 

1 Answer 1

Sorted by: Reset to default 10

onPrepare() can optionally return a promise that protractor would resolve before starting to execute the tests:

onPrepare can optionally return a promise, which Protractor will wait for before continuing execution. This can be used if the preparation involves any asynchronous calls, e.g. interacting with the browser. Otherwise Protractor cannot guarantee order of execution and may start the tests before preparation finishes.

Make a protractor promise and return it from onPrepare():

onPrepare: function() {
    var defer = protractor.promise.defer();

    request.get('http://pepper/sysid').end(function(err, resp) {
        if (err || !resp.ok) {
            log("there is an error " + err.message);
            defer.reject(resp);
        } else {
            global.sysid = resp.sysid;
            defer.fulfill(resp);
        }
    });

    return defer.promise;
},

本文标签： javascriptForce protractor39s onPrepare to wait for async http requestStack Overflow