Can I get an interactive JS debugger working on PhantomJS and/or CasperJS?
I didn't solve this entirely, but I definitely reduced the pain.
PhantomJS provides a command line argument to enable webkit's remote debugger. AFAIK, PhantomJS launches a server and dumps the script into the <head> of a webpage with the familiar in-browser debugger. It's actually pretty nice, with breakpoints, etc. However, switching to manually digging around in the terminal for a random command line parameter and the path to your script is seriously irritating.
So, I used IntelliJ's "external tools" feature to launch a Bash script that kills any previous debugging session, launches PhantomJS, and then opens the page up in Chrome.
#!/bin/bash
lsof -i tcp#0.0.0.0:9000 #list anything bound to port 9000
if [ $? -eq 0 ] #if something was listed
then
killall 'phantomjs'
fi
/usr/local/Cellar/phantomjs/2.0.0/bin/phantomjs --remote-debugger-port=9000 $1 &
# --remote-debugger-autorun=yes <- use if you have added 'debugger;' break points
# replace $1 with full path if you don't pass it as a variable.
sleep 2; #give phantomJS time to get started
open -a /Applications/Google\ Chrome.app http://localhost:9000 & #linux has a different 'open' command
# alt URL if you want to skip the page listing
# http://localhost:9000/webkit/inspector/inspector.html?page=1
#see also
#github.com/ariya/phantomjs/wiki/Troubleshooting
The next few lines are settings for IntelliJ, although the above code works just as well on any platform/IDE.
program: $ProjectFileDir$/path/to/bash/script.sh
parameters: $FilePath$
working dir: $ProjectFileDir$
PhantomJS has a remote-debugger-port option you can use to debug your casper script in Chrome dev tools. To use it, simply execute your casper script with this argument:
casperjs test script.js --remote-debugger-port=9000
Then, open up http://localhost:9000 in Chrome and click on the about:blank link that presents itself. You should then find yourself in familiar Chrome dev tools territory.
Since this is a script and not a web page, in order to start debugging, you have to do one of two things before your script will execute:
In the Chrome dev tools page, open the console and execute __run() to actually start your script.
Insert a debugger; line in your code, and run your casper script with an additional --remote-debugger-autorun=yes argument. Doing so with the remote debug page open will run the script until it hits your debugger; line.
There's a great tutorial that explains this all very nicely.
Related
I have properly installed and setup WSL2. It works fine.
I also setup X11 forwarding and X server (VcXsrv). I can launch GUI apps such like konsole or gvim or even google-chrome from a bash shell.
Now I want to launch konsole by simply double clicking a short cut on the desktop without launching the bash command mode terminal. How should I do it?
I tried running this in cmd:
> wsl /usr/bin/konsole
and it reports:
qt.qpa.xcb: could not connect to display
qt.qpa.plugin: Could not load the Qt platform plugin "xcb" in "" even though it was found.
This application failed to start because no Qt platform plugin could be initialized. Reinstalling the application may fix this problem.
Available platform plugins are: eglfs, linuxfb, minimal, minimalegl, offscreen, vnc, wayland-egl, wayland, wayland-xcomposite-egl, wayland-xcomposite-glx, xcb.
I'm guessing it is because some X11 forwarding configurations were not properly setup, so I created a k.sh as follows:
#!/usr/bin/bash
export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2; exit;}'):0.0
export LIBGL_ALWAYS_INDIRECT=1
/usr/bin/konsole &
The first two lines were the X11 settings in my .bashrc, the last line launches konsole.
It works fine under bash environment; but when I ran
wsl k.sh
from windows cmd environment, it silently quitted without launching the konsole.
I'm out of ideas. What should I do to directly launch konsole or other Linux GUI apps under windows without having to getting into bash?
Thanks in advance.
You are asking about two different command-lines, and while the failures in running them via the wsl command have the same root-cause, the underlying failures are likely slightly different.
In both cases, the wsl <command> invocation results in a non-login, non-interactive shell where the command simply "runs and exits".
Since the shell is non-login/non-interactive, your startup files (such as ~/.bashrc and ~/.bash_profile, among others) are not being processed.
When you run:
wsl /usr/bin/konsole
... the DISPLAY variable is not set, since, as you said, you normally set it in your ~/.bashrc.
Try using:
wsl -e bash -lic "/usr/bin/konsole"
That will force bash to run as a login (-l), interactive (-i) shell. The DISPLAY should be set correctly, and it should run konsole.
Note that the quotes probably aren't necessary in this case, but are useful for delineating the commands you are passing to bash. More complicated command-lines can be passed in via the quotes.
As for:
wsl k.sh
That's likely a similar problem. You are doing the right thing by setting DISPLAY in your script, but I notice that you aren't using a fully-qualified path it. This would normally work, of course, if your script is in a directory on the $PATH.
But I'm guessing that you might add that directory to the $PATH in your startup config, which means (again) that it isn't being set in this non-login, non-interactive shell.
As before, try:
wsl -e bash -lic "k.sh"`
You could also use a fully-qualified path, of course.
And, I'm fairly sure you are going to run into an issue with trying to put konsole in the background via the script. When WSL exits, and the bash shell process ends, the child konsole process will terminate as well.
You could get around this with a nohup in the script, but then you also need to redirect the stderr. It's probably easiest just to move the & from the script itself to the command-line. Change your k.sh to:
#!/usr/bin/bash
export DISPLAY=$(cat /etc/resolv.conf | grep nameserver | awk '{print $2; exit;}'):0.0
export LIBGL_ALWAYS_INDIRECT=1
/usr/bin/konsole
Then run it with:
wsl -e bash -lic "k.sh &"`
Finally, a side note that when and if you can upgrade to Windows 11, it will automatically create Windows Start Menu entries for any Linux GUI app you install that creates a .desktop file. You can manually create .desktop files to have WSL create Start menu items for most applications.
For reference, in Windows 11 it's easier. To run a GUI application without a terminal window popping up, you just need to call wslg.exe instead of wsl.exe.
So, for example:
target: C:\Windows\System32\wslg.exe konsole
start in: C:\WINDOWS\system32
shortcut key: None
comment: Konsole
This tutorial shows how to install VcXsrv and and edit .bashrc to ensure that the "DISPLAY env var is updated on every restart".
DISPLAY env var needs to be dynamic setting.
I've used it successfully with WSL2 on Windows10 Version 21H2 (OS build 19044.2130) to run Chrome, Edge, and thunar. I'm using the Ubuntu 20.04 Linux distro.
To edit .bashrc follow these instructions.
I'm using WSL and ConEmu build 180506. I'm trying to setup a task in ConEmu to use the current directory of the active tab when opening a new console but I cannot get it to work.
What I did is to setup the task {Bash: bash} using the instructions on this page
setting the task command as :
set "PATH=%ConEmuBaseDirShort%\wsl;%PATH%" & %ConEmuBaseDirShort%\conemu-cyg-64.exe --wsl -C~ -cur_console:pm:/mnt
Then following the instruction on this page, I added to my .bashrc
if [[ -n "${ConEmuPID}" ]]; then
PS1="$PS1\[\e]9;9;\"\w\"\007\e]9;12\007\]"
fi
and finally setup a shortcut using the macro :
Shell("new_console", "{bash}", "", "%CD%")
But it always open the new console in the default directory ('/home/[username]').
I don't understand what I'm not doing right.
I also noticed that a lot of environment variables listed here are not set. Basically, only $ConEmuPID and $ConEmuBuild seem to be set.
Any help would be appreciated.
GuiMacro Shell was intended to run certain commands, not tasks.
You think you may try to run macro Task("{bash}","%CD%")
Or set your {bash} task parameters to -dir %CD% and just set hotkey for your task.
Of course both methods require working CD acquisition from shell. Seems like it's OK in your case - %d shows proper folder.
I found the answer:
Shell("new_console:I", "bash.exe", "", "%CD%")
The readme is actually pretty good: https://github.com/cmderdev/cmder/blob/master/README.md
In my company we are using Komodo 11 for our project written in Perl on the backend and Javascript on the frontend. And there's a problem because we are using mod_perl module on Apache server and every time when we make change in our Perl files we have to restart Apache server to clear cache and see our changes on the server.
Is there a solution in Komodo to run every time console command (restarting Apache server) when saving a file? Because I don't want to restart Apache manually after every change in Perl file.
Edited to Userscrips, not Run Commands
You're looking for Userscripts in the Toolbox:
http://docs.activestate.com/komodo/11/manual/macros.html
Then use the shell module from the Komodo Javascript SDK:
http://docs.activestate.com/komodo/11/sdk/api/module-ko_shell.html
Example:
require("ko/shell").exec("ls -la", {}, ()=>{console.log("I ran")})
That will run ls -la. You can try that in the Komodo Console, View Menu > Tabs & Sidebars > Console.
If you need more information have a look at the docs or post in the Komodo forums. We answer questions almost daily:
community.komodoide.com
I'm trying to find some clues on the following issues and not able to find good help online.
I'm running Xvfb (X virtual frame buffer), firefox on a Linux machine in headless mode. Xvfb main service is up and running and DISPLAY variable is set.
/usr/bin/Xvfb :99 -ac -screen 0 1600x1200x16
I have some automated selenium based tests which I'm running using Gradle (gradle test). They run successfully and in Jenkins I'm able to get this working using Xvfb plugin. JUnit post publish report/result info and Gradle's reports/test/index.html file is showing successful test run.
I just run the following to run tests in Gradle:
gradle test -DsomePropConfigFileForEnv=SomeSourceConfigFilewithPathvalue
My questions:
1. How can I get the screenshots of all the pages that this automated test/run is rendering (i.e. login page, application main page after login, user clicks on the main page here and there (i.e. opening/clicking on various tabs, links, tables, buttons etc) and finally log out page.
I'm able to get the screenshot from the Xvfb_screen<N> file, which is getting created under -fbdir folder (what we specify while running Xvfb via a Jenkins job) but the screenshot is a Black page if test runs successfully (this can be due to the 2nd bullet I mentioned below) --OR it's a valid single page image screenshot (if an error is encountered during the test run).
I'm trying to get all the pages which the automated Selenium tests are rendering (the config file I passed to Gradle as a -D parameter has URLs / user name / browser, version etc info in it). PS: It's not just for some random URL that I'm trying to get an image screenshot using Xvfb DISPLAY virtual frame buffer.
During the test, I see there's a valid virtual framebuffer file, with a valid size.
For ex: While Jenkins job is in progress and running Gradle test task and Xvfb plugin has started a new xvfb instance, I see:
/production/JSlaves/kobaloki2_1/xvfb-2015-02-04_01-16-37-6170319257811815857.fbdir/Xvfb_screen0
but as soon as the test is complete (or errors our), this file is getting deleted from this xxxx.fbdir folder and there's no file at all.
Why is this file getting deleted.
If it'll remain there, then I can use xwd/xwud command and other tools (imagemagick convert etc commands) to create an image file as a POST BUILD action or even within the BUILD section after "Invoke Gradle" step.
The following command will create a .png image file of the firefox screenshot (only one page screenshot) and assuming xvfb is running on DISPLAY=:107
xwd -root -display :107 | convert xwd:- /tmp/capture2.png
and the following xvfb process (which is still running, containing a valid Xvfb_screen**** file in it - which was created by the Jenkins job where Xvfb plugin is configured with offset base 100 and 7 is the node/build number thus, making :107 as DISPLAY number).
u10002 30717 19950 1 01:16 ? 00:00:00 Xvfb :107 -screen 0 1024x768x8 -fbdir /production/JSlaves/kobaloki2_1/xvfb-2015-02-04_01-16-37-6170319257811815857.fbdir
I'm not running Xvfb / Imagemagick etc to just get an image of a URL (ex: www.google.com) but trying to get all the screenshots what a test is rendering behind Xvfb memory virtual framebuffer/file during the test run.
Are there any other tools (simple enough to install without messing up with the Linux server) which can achieve the same (capturing screenshots of all the pages that a test is rendering behind Xvf/firefox/Linux server in Headless way)?
I also tried Selenium Grid server, but FF is acting up there (due to some reason) thus I'm trying to run these tests using Jenkins, Gradle, Xvfb plugin on a Linux server (Headless mode) using firefox browser and planning to have N no. of executors to run multiple runs of these tests and finally capturing the results per run.
I'm archiving the artifacts (if any) and using Image Gallery plugin as well, but don't have the images for all the rendered pages which ran in Selenium behind Xvfb/firefox.
Any inputs are greatly appreciated.
Thanks.
If you're running with Selenium then you could use driver.getScreenshotAs()
http://docs.seleniumhq.org/docs/04_webdriver_advanced.jsp
Set this at the end of a step or method where you want a screenshot and output it to disc.
OK, this is what I did. This approach doesn't require any change to the source code of the project.
Installed imagemagick (..ck) i.e. yum install imagemagick on RHEL.
Created a script on the target server and it works now. All I do is, in the Jenkins job, when I have already started the Xvfb instance (using Xvfb plugin in Jenkins), then just a second before before running the Selenium GUI tests via Gradle (or any build tool), I call the following script and pass the parameters (where DISPLAY variable value is available to the Jenkins job as we are using Xvfb plugin in it). At the end of tests, the script exists automatically (as xwd command doesn't get any more input so it exits gracefully) and finally I publish the images and .mp4 (video) file on Jenkins (as a side bar link to show Test results / video) and archive the artifacts (.png image files using "Image Galary Plugin" and .mp4 file).
NOTE: This requires that your machine has: imagemagick, xwd and ffmpeg installed. If the options passed to any commands differs acc. to your OS machine, then tweak it accordingly. The framerate value in ffmpeg command can be a fraction i.e. 1/5 or 0.5 or 15 or anything you want (try it and see what you get).
It's up to you, if you want to ARCHIVE this big amount of data or not. You can do it if you have good space and if your Jenkins job have a better old build clean retention policies.
#!bin/bash
##
## This script will capture Screenshot (every 0.1 seconds) of an automated GUI (for ex: Selenium tests) tests running behind a HEADLESS Xvfb display instance.
## Then, it'll create a mp4 format movie using the captured screenshots.
##
## Machine where you run this script, should have: Xvfb service running, a session started by Xvfb plugin via Jenkins, xwd,ffmpeg OS commands and imagemagick (utilities).
## - For ex, try this on RHEL to install imagemagick: yum install imagemagick
##
## Variables
ws=$1; ## Workspace folder location
d=$2; d=$(echo $d | tr -d ':'); ## Display number associated with the Xvfb instance started by Xvfb plugin from a Jenkins job
wscapdir=${ws}/capturebrowserss; ## Workspace capture browser's screen shot folder
if [[ -n $3 ]]; then wscapdir=${wscapdir}/$3; fi ## If a user pass a 3rd parameter i.e. a Jenkins BUILD_NUMBER, then create a child directory with that name to archive that specific run.
i=1;
rm -fr ${wscapdir} 2>/dev/null || ( echo - Oh Oh.. Cant remove ${wscapdir} folder; echo -e "-- Still exiting gracefully! \n"; exit 0);
mkdir -p ${wscapdir}
while : ; do
xwd -root -display :$d 2>/dev/null | convert xwd:- ${wscapdir}/capFile_${d}_dispId`printf "%08d" $i`.png 2>/dev/null;
if [[ ${PIPESTATUS[0]} -gt 0 || ${PIPESTATUS[1]} -gt 0 ]]; then echo -e "\n-- Something bad happened during xwd or imagemagick convert command, manually check it.\n"; exit 0; fi
((i++)); sleep 0.1;
done
ffmpeg -r 5 -i ${wscapdir}/capFile_dispId_%08d.png ${wscapdir}/out_byRateOf5.mp4 2>/dev/null || echo -e "\n-- Some error occurred (may be too many files opened), exiting gracefully!\n";
I'm writing a script for Illustrator CS6 in ExtendScript. At the end of my script, I want to spawn a task (a second script, in Ruby) using File.execute(). However, it's not working. And I'm at a loss as how to debug the problem -- how can I figure out why this isn't working?
Here's the end of my ExtendScript file:
// Do a bunch of other work, then:
var rubyFile = new File(scriptFolder + 'BuildHtmlWalkthrough.rb');
alert(rubyFile.exists);
var result = rubyFile.execute();
alert(result);
Both rubyFile.exists and result are always true, indicating that the script launched OK. But the script does not appear to run, at all. I've tried the following diagnostics:
The Ruby script does successfully run from the command line. The script's permissions are -rwxr-xr-x
I added a call to system("touch /blah/blah/blah") as the very first line of the Ruby script. The file does not get touched.
I thought maybe the ExtendScript process was terminating before the Ruby script could run, so I added a long for loop after rubyFile.execute(). Spinning for > 30 seconds did not help.
What can I do to debug, or solve, this problem?
I'm on MacOS X v10.9.1. And for reference, this is the documentation for File.execute():
File.execute (): Boolean
Core JavaScript Classes
Executes or opens
this file using the appropriate application, as if it had been
double-clicked in a file browser. You can use this method to run
scripts, launch applications, and so on. Returns true immediately if
the application launch was successful.
It's probably doing the "opens this file using the appropriate application" instead of executing, and returns true because the file successfully opens (or is already open in its associated app). If I have a python script and do
f= new File("~/Documents/misc_scripts/getpixelrgb.py");
f.execute();
, it opens it in my script editor, even if the file's execute flags are set.
I'm on OSX, btw
In After Effects, there is system.callSystem() to execute command line commands, but I'm afraid that is absent in Illustrator (I'm assuming you're doing this for Illustrator because of the tag). Are you on OSX or Windows? There are ways around this, by making an executable .app (OSX) or .exe (Win) and calling that with execute(). If I were doing this, I'm on OSX and I'd make an AppleScript app that does 'do shell script' to make the ruby system call. On Windows, it's different. One solution you might like if you're on windows: ocra, which is ruby-specific (http://ocra.rubyforge.org/). It may be possible to run a .bat file on Windows that calls the ruby script, but I'm not sure.
[edit!]
Terribly sorry for the extraneous Windows info (for someone else, I guess). Just saw your note about being on OSX. So you might want to use the AppleScript solution.
[edit again]
So, if my ruby script ("test.rb") is:
#!/usr/bin/env ruby
print "Hello"
and my AppleScript is:
do shell script "cd /testing_folder/; ruby test.rb"
Then I get "Hello" returned in AppleScript, but ExtendScript will just return true.