I'm trying to execute a CasperJS script using SlimerJS (My tests must check html5 video which is not available using PhantomJS).
Using CasperJS on top of PhantomJS, all of my scripts work just fine, however with CasperJS on top of SlimerJS, I cannot execute any of them. instead, I just always get the following error message:
[alex#webdev-srv test]$ xvfb-run casperjs --engine=slimerjs test2.js
Script Error: Cannot find package.json at /home/alex/headless/phantomjs/test/package.json
Stack:
-> : 0
1474876419994 addons.repository WARN cacheEnabled: Couldn't get pref: extensions.getAddons.cache.enabled
I'm using CentOS 7 as VPS (No GUI), with Firefox being installed, and XVFB too.
How can I make it work? Or is there any solution for this?
Related
I am trying to run a debug the tests of my Python project inside the VS Code interface.
I followed the instruction from VS Code's website using pytest but when trying to run a test the output fails:
============================= test session starts =============================
platform win32 -- Python 3.8.10, pytest-6.2.4, py-1.10.0, pluggy-0.13.1
rootdir: c:\Users\myUserName\Projects\myProjectName
plugins: localserver-0.5.0
collected 1 item
myProjectName\tests\test_static_analysis.py . [100%]
- generated xml file: C:\Users\MYUSERNAME\AppData\Local\Temp\tmp-26696NTXW7ChqfMEN.xml
-
============================== 1 passed in 0.18s ==============================
Error: Error: cannot open file:///c%3A/Users/myUserName/Projects/myProjectName/C. Detail:
Unable to read file 'c:\Users\myUserName\Projects\myProjectName\C' (Error: Unable to resolve
non-existing file 'c:\Users\myUserName\Projects\myProjectName\C')
Error: Error: cannot open file:///c%3A/Users/myUserName/Projects/myProjectName/C. Detail:
Unable to read file 'c:\Users\myUserName\Projects\myProjectName\C' (Error: Unable to resolve
non-existing file 'c:\Users\myUserName\Projects\myProjectName\C')
Maybe VS Code doesn't have the authorization to write in AppData.
What concerns me is why is VS Code launching pytest with a junit-xml output option?
The command actually executed by VS Code is:
c:; cd 'c:\Users\myUserName\Projects\myProjectName'; & 'C:\ProgramData\Anaconda3\envs\venv-myProjectName\python.exe' 'c:\Users\myUserName\.vscode\extensions\ms-python.python-2021.8.1105858891\pythonFiles\lib\python\debugpy\launcher' '53774' '--' 'c:\Users\myUserName\.vscode\extensions\ms-python.python-2021.8.1105858891\pythonFiles\testlauncher.py' 'c:\Users\myUserName\Projects\myProjectName' 'pytest' '--override-ini' 'junit_family=xunit1' '--rootdir' 'c:\Users\myUserName\Projects\myProjectName' '--junit-xml=C:\Users\MYUSERNAME\AppData\Local\Temp\tmp-26696pYh1w3pF2cXx.xml' './myProjectName/tests/test_static_analysis.py::TestStaticAnalysisVesselForceOnLateralCenter::test_pos_surge_on_vessel'
When going in Settings > python.testing.pytestArgs it is empty.
Where is this output path defined?
How can I change it to be in the local working directory?
Do I need to have a junit-xml output? Is it mandatory for VS Code UI to work?
I am trying to use the 64 bit version of raspbian (which can be found here: https://www.raspberrypi.org/forums/viewtopic.php?f=117&t=275370
I downloaded it, installed everything, ran my updates and then switched on the camera. But when I try to run it, the PI just gives back
bash: /opt/vc/bin/raspistill: No such file or directory
When I do a ls, I can see the directory fine:
pi#raspberrypi:/opt/vc/bin $ ls
containers_check_frame_int containers_test dtoverlay-pre raspiyuv
containers_datagram_receiver containers_test_bits dtparam tvservice
containers_datagram_sender containers_test_uri edidparser vcdbg
containers_dump_pktfile containers_uri_pipe mmal_vc_diag vcgencmd
containers_rtp_decoder dtmerge raspistill vchiq_test
containers_stream_client dtoverlay raspivid vcmailbox
containers_stream_server dtoverlay-post raspividyuv vcsmem
and when I look at the permissions, there are read/execute permissions for everyone:
-rwxr-xr-x 1 root root 142397 Nov 1 16:25 raspistill
Im at a bit of a loss here - the file is right there, so why is it not being found when I try to call it from the command line?
Unfortunately, it looks like MMAL userland still (at the time of writing this) has some unresolved issues with 64bit raspberry pi OS, so it is disabled.
However, one can use docker or cherry-build 32bit packages as workarounds.
I want to setup a private tangle on my own virtual machine with Ubuntu 18.04, 4GB RAM and 20GB memory.
I have follow this instructions: https://docs.iota.org/docs/compass/0.1/how-to-guides/set-up-a-private-tangle. Every command works fine until reach this one: bazel run //docker:layers_calculator.
It shows an error as follows:
Starting local Bazel server and connecting to it...
ERROR: /home/istabraq/compass/third-party/maven_deps.bzl:3:5: Traceback (most recent call last):
File "/home/istabraq/compass/WORKSPACE", line 42
maven_jars()
File "/home/istabraq/compass/third-party/maven_deps.bzl", line 3, in maven_jars
native.maven_jar(<4 more arguments>)
type 'struct' has no method maven_jar()
ERROR: error loading package '': Encountered error while reading extension file 'protobuf_deps.bzl': no such package '#com_google_protobuf_deps//': error loading package 'external': Could not load //external package
ERROR: error loading package '': Encountered error while reading extension file 'protobuf_deps.bzl': no such package '#com_google_protobuf_deps//': error loading package 'external': Could not load //external package
INFO: Elapsed time: 4.743s
INFO: 0 processes.
FAILED: Build did NOT complete successfully (0 packages loaded)
FAILED: Build did NOT complete successfully (0 packages loaded)
How can I solve this problem? what I have missed?
read carefully the message given after running bazel installer:
Make sure you have "/home/yourusername/bin" in your path. You can also activate bash completion by adding the following line to your :
source /home/yourusername/.bazel/bin/bazel-complete.bash
You can check with: "bazel info" or "bazel version"
Unfortunately, there are further errors:
https://github.com/iotaledger/compass/issues/142
I have solve this issue by using this commands:
Step 3: Set up your environment
If you ran the Bazel installer with the --user flag as above, the Bazel executable is installed in your $HOME/bin directory. It’s a good idea to add this directory to your default paths, as follows:
export PATH="$PATH:$HOME/bin"
You can also add this command to your ~/.bashrc or ~/.zshrc file to make it permanent.
reference:
https://docs.bazel.build/versions/master/install-ubuntu.html
I try to run headless Selenium on CentOS7:
# cat /etc/os-release
NAME="Red Hat Enterprise Linux Server"
VERSION="7.2 (Maipo)"
I installed Xvfb and run it as
# /usr/bin/Xvfb :99
I installed firefox:
# firefox -v
Mozilla Firefox 38.5.0
and run it to check if it can be run at all:
# export DISPLAY=:99
# firefox
This is the output:
# firefox
Xlib: extension "RANDR" missing on display ":99".
console.error:
[CustomizableUI]
Custom widget with id loop-button does not return a valid node
console.error:
[CustomizableUI]
Custom widget with id loop-button does not return a valid node
GLib-GIO-Message: Using the 'memory' GSettings backend. Your settings will not be saved or shared with other applications.
Firefox seems to be running after that command:
# ps aux | grep firefox
root 29476 7.3 14.9 852356 152256 pts/3 Sl+ 10:30 0:03 /usr/lib64/firefox/firefox
EDIT
Yes, it's running. Taking screenshot from the Xvfb by
DISPLAY=:99 import -window root -crop 1264x948+0+0 /tmp/screenshot.jpg
I can see
Now the problematic part.
I installed Selenium Remote Driver for perl
# cpanm Selenium::Remote::Driver
Then I ran standalone selenium driver:
# java -jar selenium-server-standalone-2.49.0.jar
Now I run test script:
#!/usr/bin/perl
use strict;
use warnings;
use Selenium::Remote::Driver;
my $driver = Selenium::Remote::Driver->new(browser_name=>'firefox');
$driver->get('http://www.google.com');
print $driver->get_title();
$driver->quit();
After 45 second I get error from the driver:
Could not create new session: Unable to connect to host 127.0.0.1 on port 7055 after 45000 ms. Firefox console output:
Error: no display specified
at (eval 89) line 510.
Seems like firefox launched by the driver does not see DISPLAY environment variable. I try to add it from the script:
#!/usr/bin/perl
use strict;
use warnings;
use Selenium::Remote::Driver;
$ENV{DISPLAY}=":99";
my $driver = Selenium::Remote::Driver->new(browser_name=>'firefox');
$driver->get('http://www.google.com');
print $driver->get_title();
$driver->quit();
It does not help, the previous error remains.
What do I do?
EDIT2
I tried the current setup with Python. All works.
# pip install selenium
And used the following test script:
from selenium import webdriver
from selenium.webdriver.common.keys import Keys
driver = webdriver.Firefox()
driver.get("http://www.python.org")
f = open('ptn-sel.txt', 'w')
f.write(driver.title)
driver.close()
f.close()
I understand it's problem of Perl driver.... Any suggestions?
Is python using the standalone server or running firefox itself?
If perl is using the server and the server is spawning firefox then you need $DISPLAY set in the server processes environment not the script's environment. (By running export DISPLAY=:99; java -jar selenium-server-standalone-2.49.0.jaror similar.)
If you don't want to use the standalone server at all then Selenium::Firefox looks like it might be interesting.
I've been trying to install WWW::Mechanize::Firefox through CPAN and I am having trouble installing the dependency MozRepl. The installation goes through but the tests all fail, and when I force install it and run my perl script, I run into an error
Failed to connect to , at /Library/Perl/5.12/MozRepl/RemoteObject.pm line 467.
SO I uninstalled MozRepl and looked at the tests I get the following errors in the log:
# Failed test at t/10-plugin-repl-enter.t line 11.
Can't locate object method "repl_enter" via package "MozRepl" at t/10-plugin-repl-enter.t line 12.
...
# Failed test at t/20-plugin-json.t line 16.
Can't locate object method "json" via package "MozRepl" at t/20-plugin-json.t line 17.
# Failed test at t/19-plugin-repl-util-doc_for.t line 14.
Can't locate object method "repl_doc_for" via package "MozRepl" at t/19-plugin-repl-util-doc_for.t line 16.
# Failed test at t/18-plugin-repl-util-help_url_for.t line 14.
Can't locate object method "repl_help_url" via package "MozRepl" at t/18-plugin-repl-util-help_url_for.t line 16.
etc..
I am running on Mac OSX 10.8.4, 4 GB Ram 2.5 Ghz, Perl version 5.12. Does anybody have any idea what is causing these errors?
UPDATE:
i reinstalled mozrepl, and now I get this error when i run my script:
Failed to connect to , problem connecting to "localhost", port 4242: Connection refused at /Users/thui/perl5/perlbrew/perls/perl-5.16.0/lib/site_perl/5.16.0/MozRepl/Client.pm line 144
This works for me with perl 5.10 or later, latest Firefox (26 as of writing) and Mozrepl from github.
At command propmpt:
(1) Download MozRepl and build the XPI file (Firefox extension):
git clone git://github.com/bard/mozrepl
cd mozrepl
zip -r ../mozrepl.zip *
cd ..
mv mozrepl.zip mozrepl.xpi
(2) Install the extension in Firefox via about:addons [Install from file].
In Firefox:
(3) Menu->Tools->Mozrepl->Activate On Startup
(4) Menu->Tools->Mozrepl->Start
At command propmpt:
(5) which firefox
Make sure the firefox executable (or your OS's wrapper script) is in $PATH - you should get some output!
(6) cpanm WWW::Mechanize::Firefox
(7) Test it!
At this point, if CPANminus reports no errors then WWW::Mechanize::Firefox should be working. The first example from the synopsis is a good test:
#!/usr/bin/perl
use WWW::Mechanize::Firefox;
my $mech = WWW::Mechanize::Firefox->new();
$mech->get('http://google.com');
That assumes MozRepl is listening on port 4242 (check in Menu->Tools->Mozrepl->Change Port). You can also change the port from the perl side; see options for ->new().
(8) cpanm HTML::Display::Common
I found that bcat.pl from the examples required this module, but it wasn't installed as a dependency.