I have a bunch of old test scripts that were written for the old Selenium IDE. I'm trying to update them to run with the new Selenium, but I'm having a really hard time figuring out what to do with bits of javascript and the new syntax.
For example, I have something like:
(command)STORE (Target) javascript{Math.floor(Math.random()*100000)} (Value) ReportNumber
But all Selenium does is store the javascript expression as a variable if I use that old Syntax. I saw that the new IDE wants us to instead use Run Script but I need to run the javascript and save it as a variable and none of the attempts I've made thus far have worked. Has anyone figure out HOW to use and run javascript successfully, and to save it as a variable. Examples if you have them, please!!
You now need to use the execute script command instead, like this:
execute script | return Math.floor(Math.random()*100000) | ReportNumber
The "target" of the execute script command is the JavaScript to execute, and the "value" is the name of variable you want Selenium to put the result into. The return in the JavaScript is not optional!
Related
I want to make a command for a bot to evaluate a string (run it as code). Is there a way to run a string as code in discord.js? Not rly having a code sample here, I just want to know of a function to do so.
discord.js is using Node which uses Javascript, so your solution to evalute a code from a string should be with the eval() method.
Eval on developer.mozilla.org
However, as soon as you implement eval(), you'll soon find out that they have access to basically your whole computer. I would not recommend you to use this.
I have learned how to create Javascript callback functions and I have a basic understanding of 'functional programming' since it seems easy enough. I am however, new to javascript and it's syntax and I can't find a good way to test said syntax while in my IntelliJ IDE.
What is it you're doing?
I'm creating a Selenium based tool to click on a webelement, wait for it to reload the page, become stale or wait for a timeout. The reason I'm doing this is to classify webelements into three categories: causes a page reload, becomes stale, doesn't change. To do this I've made a simple javascript script with the JavascriptExecutor that comes with Java. Most of my code is in java and that is the language I am proficient in. I want to learn how to use javascript with java to do the things I want with web pages.
Ok but what specifically is the problem?
I have a javascript callback function:
function test(callback) {callback();}
function Return() {SeleniumTest.isPageReloaded.JavascriptWorking}
window.addEventListener('onload', test(Return));
which is executed inside a Javascript Executor like so:
System.setProperty("webdriver.chrome.driver",
"C:\\chromedriver_win32\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
String script = "function test(callback) {callback();}" +
"function Return()" +
"{SeleniumTest.isPageReloaded.JavascriptWorking}" +
"window.addEventListener('onload', test(Return));";
JavascriptExecutor js = (JavascriptExecutor)driver;
js.executeScript(script);
Which is basically the Javascript script from before, executing as a String. As you can see I am attempting to call a java class. SeleniumTest is my package, isPageReloaded is the current class and JavascriptWorking is a static method within that class. That static method looks like this:
public static void JavascriptWorking(){
System.out.println("Javascript ran here");
}
Its meant to be a simple way to get something from the javascript to my java code. The reason I tried it this way is because I read this:
https://documentation.progress.com/output/ua/OpenEdge_latest/index.html#page/bpm-appdev/invoking-java-methods-in-javascript.html
But then I realized that it wouldn't work and I dug deeper. I read that Javascript and Java are seperated by server and client and I gained some insight from this question:
calling java methods in javascript code
However I'm not 100% sure this is accurate to my case since the Javascript I'm executing isn't coming from the webpage I'm testing, Rather I made it myself inside the java code as a String. Additionally I'm still highly confused on if the answer to that question actually applies to me. There is only one and it basically just says, 'install some stuff because java is clientside and javascript is serverside'. I (kindof) understand what those terms mean but I'm not sure that the javascript I made in my class would be considered 'server-side' in fact it would seem to not be that way. What I need is clarification on A: is the javascript I'm running/creating in my java code actually serverside?
B: if yes then can someone give me a basic rundown on how I would go about calling java code from the server? does this require permissions? I assume I have to communicate with said server so does that mean I use GET and POSt requests?
C: If the Javascript Isn't server side then it must be clientside and I should be able to call it pretty easily right? How do I do this?
Show us what exactly you want
I want to be able to run:
System.setProperty("webdriver.chrome.driver",
"C:\\chromedriver_win32\\chromedriver.exe");
WebDriver driver = new ChromeDriver();
String script = "function test(callback) {callback();}" +
"function Return()" +
"{//insert callback code here}" +
"window.addEventListener('onload', test(Return));";
JavascriptExecutor js = (JavascriptExecutor)driver;
js.executeScript(script);
and get either a static java method ran, something printed to console, or some other means that links the javascript code to the javacode. So for example if I inserted the correct code to call my static method:
SeleniumTest.IsPageReloaded.JavascriptWorking
(which again looks like):
public static void JavascriptWorking(){
System.out.println("Javascript ran here");
}
Then I'd want to see "Javascript ran here" on my java console. The driver being used is interchangebale, I just used chrome first because its fast. All that this needs is an enclosing main class and It ((should)) be runnable but no promises.
The purpose is to get something in java that I can then use as a flag to know that my asynchronous javascript is done in java and I can continue on with program execution. I can get the async javascript part and I understand it, I just need a link back to my java code.
Possible Solutions
I've been told that the common way to provide a flag for your java code is to create a certain webelement on the page with javascript and test for it in java (hence the link). I don't feel like adding to the webpages I test because I want to test them without actually editing/changing them. I'm generally open to other simple solutions but the biggest thing I need is clarification on the whole clientside serverside issue because its specific to my setup (Selenium java -> javascript -> java) where most questions only cover (javascript -> java) or vice versa.
The link you mentioned about JS invoking Java is for a specific application, that is meant to do that. Not saying it is impossible (I wrote FF plugins based on similar principle), but it is not applicable in this case. It also requires special application support (by default Javascript executed in browser is heavily sandboxed - it can't access anything out of its own scope. Invoking other apps on its own is a big no.).
The scripts you are injecting are always client side, they are executed only in the browser, that is isolated from the java code itself. With that said nothing is impossible.
Would like to mention two interesting features of the Selenium library that can come handy for you.
You mention a magic term many times "async Javascript execution" - and as I can see you are implementing your own version of executeAsyncScript. Webdriver does provide this method out of the box, pretty much for the purpose you want to use it with.
When you use executeScript, it will return pretty much immediately once it finished - in your case it will just inject your listener with your code, and then it returns. Using executeAsyncScript you can get a callback - just what you are doing. When calling executeAsyncScript, a default callback method is added to your code as the last argument, that needs to be called by your JS code for the method to return.
A simple example:
String script = "var callback = arguments[arguments.length - 1];" + //the last argument is the callback function
"var classToCall = 'SeleniumTest.IsPageReloaded';" + //the classname you want to return to call from Java in case of success)
"window.addEventListener('onload', callback(classToCall));";
//you can give any supported return value to the callback function. Here I assume that you want to call a static method. This is the class name that can be used later.
try {
JavascriptExecutor js = (JavascriptExecutor)driver;
//classToCall has the value we passed to the callback function
String classToCall = js.executeAsyncScript(script);
} catch (ScriptTimeoutException e) {
System.err.println("Uhhh... this failed I guess");
e.printStackTrace();
}
The executeAsyncScript does not return until the callback is called - to avoid infinite hangs, you can set the WebDriver.Timeouts.setScriptTimeout property to control this. If the script takes longer, JavascriptExecutor will throw an exception. Once returned, you can instantiate the returned class, and print like
Class clazz = Class.forName(classToCall); //it is only necessary if the classname is dynamic. If it is the same always, you can just go ahead with that.
((IsPageReloaded)clazz.newInstance()).JavascriptWorking();
Of course you can return a more complex datastructure also from the JS where you specify the method name also, but using reflection is really offtopic here.
Take a look at EventFiringWebdriver. This is a useful class that makes use of WebDriverEventListener to create custom Webdriver wrappers, with hooks on many events, allowing you to execute custom code before/after clicking, before/after pageload... and beside some others more importantly before/after executing javascript in the webdriver. You could leverage this to always call the same code around javascript execution - just create your own WebDriverEventListener.
You can find more info on the js executor here, and on WebDriverEventListener here.
never done this before.
I'm using https://github.com/codius/codius-host. Codiu§ development has been abandoned, but I want to salvage part of it to use for my own project. I really need to be able to run codius commands from browser, so I need to develop a library or what you call it.
var codius = require('codius')
codius.upload({host: http://contract.host}
codius-host comes packed with command-line integration,
$ CODIUS_HOST=https://codius.host codius upload
How do I make a .js script do what the command-line command does ?
also posted on https://stackoverflow.com/questions/31126511/if-i-have-a-npm-tool-that-uses-comman-line-commands-how-can-i-create-a-javascri
hard time asking this questions since don't know where to start. help.
Assuming that you have access to the codius-host source code you should find the piece of code which manages the command line arguments. I am sure that they do handle the command and the command line arguments from an entry module/function and than later delegate the real job to a different module/function. What you need to do is to provide correct parameters to the functions which the function/module that handles command line argument calls with command line parameters.
In addition to that there are some nodejs libraries that might imitate a command line call from the program itself. One of those I know is shelljs:
https://www.npmjs.com/package/shelljs
You might want to check this out as well. With this one without bothering with the source code you might be able to imitate command line behaviour.
I'm attempting to create a script which will run some JavaScript code which the user will input via an HTML input field. The effect will essentially be the same as opening the dev console and pasting your code in there, but I'd like to make it more friendly for those who are unfamiliar with the dev console.
When the user inputs his JavaScript, and presses submit, I have the input stored as a variable. What I need to do is take the content of that variable, and run it inside the browser as though it's actual code. Is it possible to do that, and how would I accomplish it?
You can achieve this using eval:
var code = "alert('ok')";
eval(code);
Not that you should be very careful when doing this, since running third party code is always dangerous.
You can use eval - http://www.w3schools.com/jsref/jsref_eval.asp
But is this more friendly?
So, I'm running these Selenium IDE tests against a site I'm working on. Everything about the tests themselves is running fine, except I would like to do a bit of clean-up once I'm done. In my MVC3 Razor based site, I have a JavaScript file with a function that gets a JsonResult from a Controller of mine. That Controller handles the database clean-up that Selenium IDE otherwise couldn't handle.
However, I'm having a hard time finding any sort of documentation on how to do this. I know I can do JavaScript{ myJavascriptGoesHere } as one of the Values for a line in the test, but I can't seem to find a way to tell it to go find my clean-up function.
Is it even possible for Selenium IDE to do this sort of thing?
If it comes down to it, I can just make a separate View to handle the clean-up, but I'd really like to avoid that if possible.
Thanks!
If you want to execute your own JavaScript function that exists in your test page from Selenium IDE, you need to make sure you access it via the window object. If you look at the reference for storeEval for instance, it says:
Note that, by default, the snippet will run in the context of the
"selenium" object itself, so this will refer to the Selenium object.
Use window to refer to the window of your application, e.g.
window.document.getElementById('foo')
So if you have your own function e.g. myFunc(). You need to refer to it as window.myFunc().
This can be very handy for exercising client-side validation without actually submitting the form, e.g. if you want to test a variety of invalid and valid form field values.
If you use runScript, that should already run in the window's context.
This works for me.
IJavaScriptExecutor js = driver as IJavaScriptExecutor;
string title = (string)js.ExecuteScript("myJavascriptGoesHere");
Make sure your javascript works first before using it here!
Actually to access your page javascript space, you need to get the real window of your page : this.browserbot.getUserWindow()
See this statement to get the jQuery entry point in your page (if it has jQuery of course ^^ )
https://stackoverflow.com/a/54887281/2143734