npx npm run cypress --headless running this code in my project is still opening up a google chrome user, requiring UI to keep it going
no matter what I try, even uninstalling and reinstalling cypress doesn't fix the issue
The correct way is:
cypress run
Actually by default this command is executed in headless mode, that's why it's not necessary to write --headless. And if you want to run it in headed mode, then:
cypress run --headed
Related
I run Linux 20.04.
Cypress open gets stuck loading when booting up.
This is what it looks like
When doing a fresh install on the desktop with "npm install -D cypress" I can choose the e2e test category, it creates the default folder structure and config then it gets stuck on the same screen.
Cypress run dosen't do anything at all.
Has anyone else experienced similar issues?
I'm working on a new browser extension and I'm using Mozilla's web-ext tool to test it. I couldn't figure out how to run the test browser in dark mode.
So far I have tried this:
web-ext run --verbose --pref extensions.activeThemeID=firefox-compact-dark#mozilla.org
I figured out a way! Apparently, dark mode is an add-on; not a preference.
First step is to create an empty directory to store our Firefox profile.
mkdir ../dark-mode-profile
npx web-ext run -p ../dark-mode-profile --keep-profile-changes
Then enable dark mode and close Firefox (and hit Ctrl-C if necessary). Since we turned on the --keep-profile-changes flag, all the changes we made are now stored in our profile folder.
We can run Firefox with this profile:
npx web-ext run -p ../dark-mode-profile
Problem
I want to be able to run my tests in terminal, but all my tests fail due to Cypress using Electron as the default browser and I want it to utilize Chrome, but without having to specify it in the command line.
Current Outcome
I know I can use the command npx cypress run --browser chrome to tell Cypress to use Chrome instead. However, it opens the browser AND runs it in command line.
Expected Outcome
Ideally it would only require me to run npx cypress run and this would only run in the command line using Chrome.
Summary
Is there a way to set the default browser to Chrome instead of Electron so I wouldn't need to specify which browser to use?
Is there something to add to the package.json file to set the default browser to Chrome or a line to inject somewhere? I checked the docs and I couldn't really find anything other than the --browser command.
** Cypress Github Open Issue **
Here is the link to the open issue on their github regarding a headless chrome and also to change the default for cypress run
Support chrome headless and change defaults for cypress run
Photo for the debugger
Sorry for the terrible scribbles...I am under an NDA so had to go back and scratch out all the path names for my project as well as my last name.
Cypress 3.8.1+ allows you to pass --headless to cypress run to make Chrome invisible on any operating system by using Chrome headless:
cypress run --headless --browser chrome
Outdated answer below:
There is not currently a way to hide Chrome in run mode on macOS or
Windows.
We'd like to support it, but we'd have to find some kind of workaround
for xvfb not being available. We can't use google-chrome
--headless either because it won't allow us to install the Cypress extension.
The advice below will only work for Linux.
npx cypress run --browser chrome is the correct way to do what
you're trying to do.
If you are on Linux, you can make it run Chrome in a virtual
framebuffer (so it will be hidden from you) by blanking out the
DISPLAY env variable:
DISPLAY= npx cypress run --browser chrome
Technical explanation:
Cypress does not support running in "headless Chrome" - headless Chrome was not around when Cypress was first written
So, when Cypress is running in Chrome in CI, it uses xvfb to create an X virtual framebuffer, then it uses the DISPLAY variable
to tell Chrome to run in the xvfb
However, if you have DISPLAY set (by default, it is set on Linux if you have a display manager), it will use that DISPLAY instead -
this is why it appears even though you're doing cypress run.
Adding DISPLAY= before the command nulls out DISPLAY, which means that Cypress will spawn xvfb and run it inside of there
instead.
I was trying to install "qunit" using Windows command Prompt by executing the command
"npm i qunit".
On executing , it loads something and then it does not show anything . I have to press Ctrl+C twice to stop whatever this command is executing in the background.
Because of this "qunit" is not getting installed properly.
How should i resolve this problem ?
I am facing some weird issue. Before updating SlimerJS and casperJS every script were working fine but since from yesterday i am not able to run the scripts. when i run this below command to run the script
sudo xvfb-run -a casperjs test --engine=slimerjs testsuite/testing_part1.js --username=user --password=pwd --url=url_of_the_site
every scripts are getting failed
has anybody know what/why this error i am getting?
Currently i am using SlimerJS=SlimerJS 0.9.6 and CasperJS=1.1.0-beta3
Add http:// to your URL like this:http://URL.It will work