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fix(clientsidescripts): convert non-Error exceptions to Errors
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If any functions called by clientSideScripts throws a an exception that
doesn't inherit from `Error`, the stack trace is completely unhelpful and
the message is just "unknown error."  This commit wraps such errors into
`Error` instances so that we have meaningful stack traces and the correct
exception message.  (e.g. This is the common case when running dart2js
code.  This commit gives us the Dart stack trace and exception message.)

In addition, I've pushed the construction of the string to install into
the browser into clientsidescripts.js.
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@chirayuk @juliemr
chirayuk authored and juliemr committed May 23, 2014
1 parent 9e5d9e4 commit 56daa54
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74 changes: 51 additions & 23 deletions lib/clientsidescripts.js
View file
Original file line number Diff line number Diff line change
@@ -1,18 +1,20 @@
/**
* All scripts to be run on the client via executeAsyncScript or
* executeScript should be put here. These scripts are transmitted over
* the wire using their toString representation, and cannot reference
* external variables. They can, however use the array passed in to
* arguments.
* executeScript should be put here.
*
* NOTE: These scripts are transmitted over the wire as JavaScript text
* constructed using their toString representation, and *cannot*
* reference external variables.
*
* Some implementations seem to have issues with // comments, so use star-style
* inside scripts.
* inside scripts. (TODO: add issue number / example implementations
* that caused the switch to avoid the // comments.)
*/

// jshint browser: true
// jshint shadow: true
/* global angular */
var clientSideScripts = exports;
// jshint browser: true
// jshint shadow: true
/* global angular */
var functions = {};

/**
* Wait until Angular has finished rendering and has
Expand All @@ -23,7 +25,7 @@ var clientSideScripts = exports;
* @param {string} selector The selector housing an ng-app
* @param {function} callback callback
*/
clientSideScripts.waitForAngular = function(selector, callback) {
functions.waitForAngular = function(selector, callback) {
var el = document.querySelector(selector);
try {
angular.element(el).injector().get('$browser').
Expand All @@ -42,7 +44,7 @@ clientSideScripts.waitForAngular = function(selector, callback) {
*
* @return {Array.<Element>} The elements containing the binding.
*/
clientSideScripts.findBindings = function(binding, exactMatch, using) {
functions.findBindings = function(binding, exactMatch, using) {
using = using || document;
var bindings = using.getElementsByClassName('ng-binding');
var matches = [];
Expand Down Expand Up @@ -78,7 +80,7 @@ clientSideScripts.findBindings = function(binding, exactMatch, using) {
* @return {Array.<Element>} The row of the repeater, or an array of elements
* in the first row in the case of ng-repeat-start.
*/
clientSideScripts.findRepeaterRows = function(repeater, index, using) {
functions.findRepeaterRows = function(repeater, index, using) {
using = using || document;

var prefixes = ['ng-', 'ng_', 'data-ng-', 'x-ng-', 'ng\\:'];
Expand Down Expand Up @@ -126,7 +128,7 @@ clientSideScripts.findBindings = function(binding, exactMatch, using) {
*
* @return {Array.<Element>} All rows of the repeater.
*/
clientSideScripts.findAllRepeaterRows = function(repeater, using) {
functions.findAllRepeaterRows = function(repeater, using) {
using = using || document;

var rows = [];
Expand Down Expand Up @@ -171,7 +173,7 @@ clientSideScripts.findBindings = function(binding, exactMatch, using) {
*
* @return {Array.<Element>} The element in an array.
*/
clientSideScripts.findRepeaterElement = function(repeater, index, binding, using) {
functions.findRepeaterElement = function(repeater, index, binding, using) {
var matches = [];
using = using || document;

Expand Down Expand Up @@ -254,7 +256,7 @@ clientSideScripts.findRepeaterElement = function(repeater, index, binding, using
*
* @return {Array.<Element>} The elements in the column.
*/
clientSideScripts.findRepeaterColumn = function(repeater, binding, using) {
functions.findRepeaterColumn = function(repeater, binding, using) {
var matches = [];
using = using || document;

Expand Down Expand Up @@ -334,7 +336,7 @@ clientSideScripts.findRepeaterColumn = function(repeater, binding, using) {
*
* @return {Array.<Element>} The matching elements.
*/
clientSideScripts.findByModel = function(model, using) {
functions.findByModel = function(model, using) {
using = using || document;
var prefixes = ['ng-', 'ng_', 'data-ng-', 'x-ng-', 'ng\\:'];
for (var p = 0; p < prefixes.length; ++p) {
Expand All @@ -354,7 +356,7 @@ clientSideScripts.findByModel = function(model, using) {
*
* @return {Array.<Element>} The matching elements.
*/
clientSideScripts.findByButtonText = function(searchText, using) {
functions.findByButtonText = function(searchText, using) {
using = using || document;
var elements = using.querySelectorAll('button, input[type="button"], input[type="submit"]');
var matches = [];
Expand Down Expand Up @@ -382,7 +384,7 @@ clientSideScripts.findByButtonText = function(searchText, using) {
*
* @return {Array.<Element>} The matching elements.
*/
clientSideScripts.findByPartialButtonText = function(searchText, using) {
functions.findByPartialButtonText = function(searchText, using) {
using = using || document;
var elements = using.querySelectorAll('button, input[type="button"], input[type="submit"]');
var matches = [];
Expand Down Expand Up @@ -411,7 +413,7 @@ clientSideScripts.findByPartialButtonText = function(searchText, using) {
*
* @return {Array.<Element>} An array of matching elements.
*/
clientSideScripts.findByCssContainingText = function(cssSelector, searchText, using) {
functions.findByCssContainingText = function(cssSelector, searchText, using) {
var using = using || document;
var elements = using.querySelectorAll(cssSelector);
var matches = [];
Expand All @@ -434,7 +436,7 @@ clientSideScripts.findByCssContainingText = function(cssSelector, searchText, us
* @param {number} attempts Number of times to retry.
* @param {function} asyncCallback callback
*/
clientSideScripts.testForAngular = function(attempts, asyncCallback) {
functions.testForAngular = function(attempts, asyncCallback) {
var callback = function(args) {
setTimeout(function() {
asyncCallback(args);
Expand Down Expand Up @@ -468,7 +470,7 @@ clientSideScripts.testForAngular = function(attempts, asyncCallback) {
*
* @return {?Object} The result of the evaluation.
*/
clientSideScripts.evaluate = function(element, expression) {
functions.evaluate = function(element, expression) {

return angular.element(element).scope().$eval(expression);
};
Expand All @@ -478,7 +480,7 @@ clientSideScripts.evaluate = function(element, expression) {
*
* @param {string} selector The selector housing an ng-app
*/
clientSideScripts.getLocationAbsUrl = function(selector) {
functions.getLocationAbsUrl = function(selector) {
var el = document.querySelector(selector);
return angular.element(el).injector().get('$location').absUrl();
};
Expand All @@ -490,7 +492,7 @@ clientSideScripts.getLocationAbsUrl = function(selector) {
* @param {string} url In page URL using the same syntax as $location.url(),
* /path?search=a&b=c#hash
*/
clientSideScripts.setLocation = function(selector, url) {
functions.setLocation = function(selector, url) {
var el = document.querySelector(selector);
var $injector = angular.element(el).injector();
var $location = $injector.get('$location');
Expand All @@ -501,3 +503,29 @@ clientSideScripts.setLocation = function(selector, url) {
$rootScope.$digest();
}
};

/* Publish all the functions as strings to pass to WebDriver's
* exec[Async]Script. In addition, also include a script that will
* install all the functions on window (for debugging.)
*
* We also wrap any exceptions thrown by a clientSideScripts function
* that is not an instance of the Error type into an Error type. If we
* don't do so, then the resulting stack trace is completely unhelpful
* and the exception message is just "unknown error." These types of
* exceptins are the common case for dart2js code. This wrapping gives
* us the Dart stack trace and exception message.
*/
var util = require('util');
var scriptsList = [];
var scriptFmt = (
'try { return (%s).apply(this, arguments); }\n' +
'catch(e) { throw (e instanceof Error) ? e : new Error(e); }');
for (var fnName in functions) {
if (functions.hasOwnProperty(fnName)) {
exports[fnName] = util.format(scriptFmt, functions[fnName]);
scriptsList.push(util.format('%s: %s', fnName, functions[fnName]));
}
}

exports.installInBrowser = (util.format(
'window.clientSideScripts = {%s};', scriptsList.join(', ')));
18 changes: 5 additions & 13 deletions lib/protractor.js
View file
Original file line number Diff line number Diff line change
Expand Up @@ -2,6 +2,8 @@ var url = require('url');
var webdriver = require('selenium-webdriver');

var clientSideScripts = require('./clientsidescripts.js');


var ProtractorBy = require('./locators.js').ProtractorBy;

var DEFER_LABEL = 'NG_DEFER_BOOTSTRAP!';
Expand Down Expand Up @@ -1037,19 +1039,9 @@ Protractor.prototype.getLocationAbsUrl = function() {
*/
Protractor.prototype.debugger = function() {
// jshint debug: true
var clientSideScriptsList = [];
for (var script in clientSideScripts) {
clientSideScriptsList.push(
script + ': ' + clientSideScripts[script].toString());
}

this.driver.executeScript(
'window.clientSideScripts = {' + clientSideScriptsList.join(', ') + '}');

var flow = webdriver.promise.controlFlow();
flow.execute(function() {
debugger;
}, 'add breakpoint to control flow');
this.driver.executeScript(clientSideScripts.installInBrowser);
webdriver.promise.controlFlow().execute(function() { debugger; },
'add breakpoint to control flow');
};

/**
Expand Down

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