Executing Cypress tests on Windows Subsystem for Linux (WSL

Encountering errors while attempting to run Cypress on WSL with Ubuntu:

$ cypress run
[29023:1018/155130.159647:ERROR:bus.cc(392)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory
[29023:1018/155130.162020:ERROR:bus.cc(392)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[29023:1018/155130.162068:ERROR:bus.cc(392)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
[29211:1018/155130.193707:ERROR:gpu_init.cc(441)] Passthrough is not supported, GL is swiftshader

...

[29023:1018/155132.292604:ERROR:bus.cc(392)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")

Timed out waiting for the browser to connect. Retrying...
[29023:1018/155232.249036:ERROR:bus.cc(392)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")

Timed out waiting for the browser to connect. Retrying again...
[29023:1018/155332.249372:ERROR:bus.cc(392)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")
 (-2) loading 'http://localhost:3000/__/#/tests/integration/simple.spec.ts'
Error:  (-2) loading 'http://localhost:3000/__/#/tests/integration/simple.spec.ts'
    at rejectAndCleanup (electron/js2c/browser_init.js:161:7486)
    at Object.failListener (electron/js2c/browser_init.js:161:7699)
    at Object.emit (events.js:376:20)

In need of assistance as no related topics have been found.

javascriptcypresswindows-subsystem-for-linuxyarn-v2

Answer №1

To ensure that Cypress runs smoothly on Windows, it may be necessary to configure additional settings in order to run GUI applications in WSL, depending on your specific version:

  • Regardless of the Windows release you have, remember to install the required dependencies:

    apt-get install libgtk2.0-0 libgtk-3-0 libgbm-dev libnotify-dev libgconf-2-4 libnss3 libxss1 libasound2 libxtst6 xauth xvfb

    This step might have already been completed if you followed the Cypress installation instructions using npm.

  • If you are using Windows 11, WSLg is included by default, enabling direct running of GUI applications on Windows. Update your WSL by executing wsl --update if you recently switched from Windows 10 to Windows 11.

    Additionally, make sure to remove any manual configurations of DISPLAY in startup files (e.g., ~/.bashrc) if you were attempting to run an X server on a previous Windows release.

  • Configuration for Windows 10 requires more steps. For detailed information, refer to this Super User question, as it delves into setting up third-party X servers and other solutions beyond basic programming tasks related to getting GUI applications to run correctly.

I can confirm that I successfully ran ./node_modules/.bin/cypress open following the Cypress installation guide with the help of my technique involving xrdp as outlined in the Super User answer, ensuring there were no unexpected hurdles in getting Cypress up and running.

Answer №2

We encountered a similar issue in our Azure Cypress pipeline too. Strangely, it only began occurring after we upgraded to Cypress 8.6.0, the latest version at that time. The problem was resolved by rolling back to version 8.4.0.

Answer №3

When browsing through various online discussions, I encountered challenges when using a VPN and corporate firewall.

I frequently encountered errors such as:

[14874:0408/102328.150664:ERROR:bus.cc(392)] Connection to the bus failed: Unable to interpret server address: Address type unknown (valid types are "tcp" and "unix" on UNIX)
[14874:0408/102328.150745:ERROR:bus.cc(392)] Connection to the bus failed: Unable to interpret server address: Address type unknown (valid types are "tcp" and "unix" on UNIX)
[15032:0408/102328.255402:ERROR:gpu_init.cc(453)] Passthrough is not supported, GL is swiftshader, ANGLE is
[14874:0408/102328.321306:ERROR:bus.cc(392)] Connection to the bus failed: Unable to interpret server address: Address type unknown (valid types are "tcp" and "unix" on UNIX)
[14874:0408/102328.331513:ERROR:bus.cc(392)] Connection to the bus failed: Unable to interpret server address: Address type unknown (valid types are "tcp" and "unix" on UNIX)
[14874:0408/102402.013363:ERROR:connection.cc(66)] Received X connection error.
[15032:0408/102402.014034:ERROR:connection.cc(66)] Received X connection error.
[15032:0408/102402.014064:ERROR:connection.cc(66)] Received X connection error.

After investigation, I discovered that WSL2 requires setting the display to the IP address of the host Windows machine. Despite sounding unconventional, this is necessary due to WSL2 having its own IP address and subnet, requiring it to utilize the IP of the display which differs from its own.

A detailed guide on resolving this issue can be found here: https://gist.github.com/pjobson/6b9fb926c59f58aa73d4efa10fe13654

The steps I followed were:

  1. Installation of Dependencies
  2. Setting up certificates for the corporate firewall
  3. Node installation
  4. Vcxsrv installation
  5. Configuration of $DISPLAY
  6. DBUS setup
  7. X-Server initialization
  8. Configuring Windows Firewall
  9. Cypress installation

Answer №4

After reviewing the Cypress troubleshooting page, it seems that these errors can be safely ignored. However, I am now questioning whether this error is truly insignificant or if it could indicate a larger issue.

https://docs.cypress.io/guides/references/troubleshooting#Run-the-Cypress-app-by-itself

The verbose Electron logging may display warnings that do not interfere with Cypress's normal functionality. An example of this is when the Test Runner launches successfully despite displaying intimidating messages like the following: [475:0617/150421.326986:ERROR:bus.cc(395)] Failed to connect to the bus: Failed to connect to socket /var/run/dbus/system_bus_socket: No such file or directory [475:0617/150425.061526:ERROR:bus.cc(395)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix") [475:0617/150425.079819:ERROR:bus.cc(395)] Failed to connect to the bus: Could not parse server address: Unknown address type (examples of valid types are "tcp" and on UNIX "unix")

I have encountered this error during both timed out cypress runs and successful ones. This consistent occurrence makes me lean towards dismissing it as insignificant.

Answer №5

Had an issue with this error today, but managed to resolve it by updating my cypress version

npm install cypress@latest

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