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A gist to track down an error in selenium-webdriver tests using chai-as-promised + mocha
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| describe("test the UI", function() { | |
| it('when the log is shown', function(next) { | |
| var _this = this; | |
| var promiseA, promiseB; | |
| promiseA = Q.promise() // or whatever, to create a promise for this test | |
| promiseB = Q.promise() // or whatever, to create a promise for this test | |
| promiseA.then(function() { // promiseA and promiseB are Q promises | |
| var fn; | |
| fn = function(limit) { | |
| return promiseB.then(function(data) { | |
| return expect(data.rows.length).to.equal(1); | |
| }).fail(function(err) { | |
| if (limit > 0) { | |
| return fn(limit - 1); | |
| } else { | |
| return Q.reject(err); | |
| } | |
| }); | |
| }; | |
| return fn(20); | |
| }).then(function() { | |
| this.client.findElement(By.css("li.log-content")).then(function(log) { | |
| return Q.all([ | |
| expect(log.getText()) // this is a webdriver.promise, value = HUNDRED. | |
| .to.eventually.equal("THOUSAND"), // This expect clause SHOULD throw an error | |
| expect(log.findElement(By.css(".image")).getAttribute('src')) // this is a webdriver.promise too | |
| .to.eventually.equal('user.png') | |
| ]).should.notify(next); // next is always executed, no matter if the test fails or succeeds | |
| }, function(err) { | |
| return console.log("ERROR", JSON.stringify(err)); // Control never reaches here when any of the above two promises fail | |
| }) | |
| .then(function() { | |
| console.log("Promise Succeeds", arguments); // Here I get a nice fat error which is | |
| // thrown from the expect() clause, | |
| // for the error, refer to [stack-trace.json] | |
| }).fail(function(err) { | |
| console.log("Promise Fails", err) // Control never reaches here. | |
| return next(err); | |
| }); | |
| }); | |
| }); |
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| {"__flags":{ | |
| "object":{ | |
| "stack":"at defer (.../node_modules/q/q.js:552:19) | |
| at Promise.then (.../node_modules/q/q.js:792:20) | |
| at when (.../node_modules/q/q.js:879:21) | |
| at Function.all (.../node_modules/q/q.js:1508:12) | |
| at .../test/common/directives/activity_log.test.coffee:83:24 | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:402:7) | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:402:7) | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at then (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:377:7) | |
| at Object.webdriver.promise.asap (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:663:11) | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1449:25) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at then (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:377:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:394:19) | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at then (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:377:7) | |
| at Object.webdriver.promise.asap (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:663:11) | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1449:25) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:402:7) | |
| at .../node_modules/selenium-webdriver/lib/webdriver/promise.js:1305:10 | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:402:7) | |
| at .../node_modules/selenium-webdriver/lib/goog/base.js:1178:15 | |
| at webdriver.promise.ControlFlow.runInNewFrame_ (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:1438:20) | |
| at notify (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:328:12) | |
| at notifyAll (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:297:7) | |
| at fulfill (.../node_modules/selenium-webdriver/lib/webdriver/promise.js:402:7) | |
| at .../node_modules/selenium-webdriver/lib/webdriver/promise.js:607:51 | |
| at .../node_modules/selenium-webdriver/lib/webdriver/http/http.js:96:5 | |
| at IncomingMessage.<anonymous> (.../node_modules/selenium-webdriver/http/index.js:113:7) | |
| at IncomingMessage.EventEmitter.emit (events.js:117:20) | |
| at _stream_readable.js:920:16 | |
| at process._tickCallback (node.js:415:13)", | |
| "source":{ | |
| "stack":"at defer (.../node_modules/q/q.js:552:19) | |
| at .../node_modules/q/q.js:1510:24 | |
| at _fulfilled (.../node_modules/q/q.js:798:54) | |
| at self.promiseDispatch.done (.../node_modules/q/q.js:827:30) | |
| at Promise.promise.promiseDispatch (.../node_modules/q/q.js:760:13) | |
| at .../node_modules/q/q.js:821:14 | |
| at flush (.../node_modules/q/q.js:108:17) | |
| at process._tickCallback (node.js:415:13)", | |
| "source":{ | |
| "exception":{ | |
| "name":"AssertionError", | |
| "message":"expected 'HUNDRED' to equal 'THOUSAND'", | |
| "showDiff":true, | |
| "actual":"HUNDRED", | |
| "expected":"THOUSAND", | |
| "stack":"AssertionError: expected 'HUNDRED' to equal 'THOUSAND' | |
| From previous event: | |
| at Array.reduce (native)" | |
| } | |
| } | |
| } | |
| } | |
| }} |
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| // As a workaround to the non-functional .should.notify(next) construct, I'm using this for now | |
| // This way, if the test passes, err will be null, and next would be called without args = PASS | |
| // ... and if the Q.all() fails (either expect() clauses fail) then there will be an err object | |
| // ... which I log to console and FAIL | |
| Q.all([ | |
| expect(log.getText()) | |
| .to.eventually.equal("HUNDRED"), | |
| expect(log.findElement(By.css(".image > img")).getAttribute('src')) | |
| .to.eventually.equal('http://games.playlyfe.com/test/api/assets/players/RedDevilz') | |
| ]).should.notify(function(err) { | |
| if (err) { | |
| console.log(err); | |
| } | |
| return next(err); | |
| }); |
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