- Notice that the Cypress npm package is a wrapper around the Cypress binary. The version of the npm package determines the version of the binary downloaded. As of version 3.0, the binary is downloaded to a global cache directory to be used across projects. Best Practice The recommended approach is to install Cypress with npm because. Cypress is versioned like any other dependency.
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- How to install Cypress via
npm
- How to install Cypress via direct download
- How to version and run Cypress via
package.json
Operating System
Cypress is a desktop application that is installed on your computer. The desktop application supports these operating systems:
Cypress Auto Flash Utility (AutoFlashUtil) is a flexible, cross-platform, integrated application to allow programming Cypress devices. It can perform Program, Erase, Verify, and Read operations on the flash of the target device. It can target an entire device, a specific region, a sector, and even a byte of a device.
- macOS 10.9 and above (64-bit only)
- Linux Ubuntu 12.04 and above, Fedora 21 and Debian 8 (64-bit only)
- Windows 7 and above
Node.js
If you’re using npm
to install Cypress, we support:
- Node.js 10 or 12 and above
Linux
If you’re using Linux, you’ll want to have the required dependencies installed on your system.
We also have an official cypress/base Docker container with all of the required dependencies installed.
Ubuntu/Debian
CentOS
npm install
Install Cypress via npm
:
This will install Cypress locally as a dev dependency for your project.
Make sure that you have already run npm init
or have a node_modules
folder or package.json
file in the root of your project to ensure cypress is installed in the correct directory.
Notice that the Cypress npm
package is a wrapper around the Cypress binary. The version of the npm
package determines the version of the binary downloaded. As of version 3.0
, the binary is downloaded to a global cache directory to be used across projects.
The recommended approach is to install Cypress with npm
because :
- Cypress is versioned like any other dependency.
- It simplifies running Cypress in Continuous Integration.
yarn add
Installing Cypress via yarn
:
Direct download
If you’re not using Node or npm
in your project or you want to try Cypress out quickly, you can always download Cypress directly from our CDN.
Recording runs to the Dashboard is not possible from the direct download. This download is only intended as a quick way to try out Cypress. To record tests to the Dashboard, you’ll need to install Cypress as an npm
dependency.
The direct download will always grab the latest available version. Your platform will be detected automatically.
Then you can manually unzip and double click. Cypress will run without needing to install any dependencies.
Continuous integration
Please read our Continuous Integration docs for help installing Cypress in CI. When running in linux you’ll need to install some system dependencies or you can use our Docker images which have everything you need prebuilt.
If you used npm
to install, Cypress has now been installed to your ./node_modules
directory, with its binary executable accessible from ./node_modules/.bin
.
Now you can open Cypress from your project root one of the following ways:
The long way with the full path
Or with the shortcut using npm bin
Or by using npx
note: npx is included with npm > v5.2
or can be installed separately.
Or by using yarn
After a moment, the Cypress Test Runner will launch.
Switching browsers
The Cypress Test Runner attempts to find all compatible browsers on the user’s machine. The drop down to select a different browser is in the top right corner of the Test Runner.
Read Launching Browsers for more information on how Cypress controls a real browser during end-to-end tests.
Cross Browser SupportCypress currently supports Firefox and Chrome-family browsers (including Edge and Electron). To run tests optimally across these browsers in CI, check out the strategies demonstrated in the cross browser Testing guide.
Adding npm scripts
While there’s nothing wrong with writing out the full path to the Cypress executable each time, it’s much easier and clearer to add Cypress commands to the scripts
field in your package.json
file.
Now you can invoke the command from your project root like so:
…and Cypress will open right up for you.
By installing Cypress through npm
you also get access to many other CLI commands.
As of version 0.20.0
Cypress is also a fully baked node_module
you can require in your Node scripts.
You can read more about the CLI here.
Environment variables
Name | Description |
---|---|
CYPRESS_INSTALL_BINARY | Destination of Cypress binary that's downloaded and installed |
CYPRESS_DOWNLOAD_MIRROR | Downloads the Cypress binary though a mirror server |
CYPRESS_CACHE_FOLDER | Changes the Cypress binary cache location |
CYPRESS_RUN_BINARY | Location of Cypress binary at run-time |
removed use CYPRESS_INSTALL_BINARY=0 instead | |
removed use CYPRESS_INSTALL_BINARY instead |
Install binary
Using the CYPRESS_INSTALL_BINARY
environment variable, you can control how Cypress is installed. To override what is installed, you set CYPRESS_INSTALL_BINARY
alongside the npm install
command.
This is helpful if you want to:
- Install a version different than the default npm package.
- Specify an external URL (to bypass a corporate firewall).
- Specify a file to install locally instead of using the internet.
In all cases, the fact that the binary was installed from a custom location is not saved in your package.json
file. Every repeated installation needs to use the same environment variable to install the same binary.
Skipping installation
You can also force Cypress to skip the installation of the binary application by setting CYPRESS_INSTALL_BINARY=0
. This could be useful if you want to prevent Cypress from downloading the Cypress binary at the time of npm install
.
Now Cypress will skip its install phase once the npm module is installed.
Binary cache
As of version 3.0
, Cypress downloads the matching Cypress binary to the global system cache, so that the binary can be shared between projects. By default, global cache folders are:
- MacOS:
~/Library/Caches/Cypress
- Linux:
~/.cache/Cypress
- Windows:
/AppData/Local/Cypress/Cache
To override the default cache folder, set the environment variable CYPRESS_CACHE_FOLDER
.
Cypress will automatically replace the ~
with the user’s home directory. So you can pass CYPRESS_CACHE_FOLDER
as a string from CI configuration files, for example:
See also Continuous Integration - Caching section in the documentation.
CYPRESS_CACHE_FOLDER
will need to exist every time cypress is launched. To ensure this, consider exporting this environment variable. For example, in a .bash_profile
(MacOS, Linux), or using RegEdit
(Windows).
Run binary
Setting the environment variable CYPRESS_RUN_BINARY
overrides where the npm module finds the Cypress binary.
CYPRESS_RUN_BINARY
should be a path to an already unzipped binary executable. The Cypress commands open
, run
, and verify
will then launch the provided binary.
Mac
Linux
Windows
We recommend not exporting the CYPRESS_RUN_BINARY
environment variable, since it will affect every cypress module installed on your file system.
Download URLs
If you want to download a specific Cypress version for a given platform (Operating System), you can get it from our CDN.
The download server URL is https://download.cypress.io
.
We currently have the following downloads available:
- Windows 64-bit (
?platform=win32&arch=x64
) - Windows 32-bit (
?platform=win32&arch=ia32
, available since Cypress 3.3.0) - Linux 64-bit (
?platform=linux
) - macOS 64-bit (
?platform=darwin
)
Here are the available download URLs:
See https://download.cypress.io/desktop.json for all available platforms.
Method | URL | Description |
---|---|---|
GET | /desktop | Download Cypress at latest version (platform auto-detected) |
GET | /desktop.json | Returns JSON containing latest available CDN destinations |
GET | /desktop?platform=p&arch=a | Download Cypress for a specific platform and/or architecture |
GET | /desktop/:version | Download Cypress with a specified version |
GET | /desktop/:version?platform=p&arch=a | Download Cypress with a specified version and platform and/or architecture |
Example of downloading Cypress 3.0.0
for Windows 64-bit:
Mirroring
If you choose to mirror the entire Cypress download site, you can specify CYPRESS_DOWNLOAD_MIRROR
to set the download server URL from https://download.cypress.io
to your own mirror.
For example:
Cypress will then attempt to download a binary with this format: https://www.example.com/desktop/:version?platform=p
Opt out of sending exception data to Cypress
When an exception is thrown regarding Cypress, we send along the exception data to https://api.cypress.io
. We solely use this information to help develop a better product.
If you would like to opt out of sending any exception data to Cypress, you can do so by setting CYPRESS_CRASH_REPORTS=0
in your system environment variables.
Opt out on Linux or macOS
To opt out of sending exception data on Linux or macOS, run the following command in a terminal before installing Cypress:
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To make these changes permanent, you can add this command to your shell’s ~/.profile
(~/.zsh_profile
, ~/.bash_profile
, etc.) to run them on every login.
Opt out on Windows
To opt out of sending exception data on Windows, run the following command in the Command Prompt before installing Cypress:
To accomplish the same thing in Powershell:
To save the CYPRESS_CRASH_REPORTS
variable for use in all new shells, use setx
:
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Install pre-release version
If you would like to install a pre-release version of the Test Runner to test out functionality that has not yet been released, here is how:
- Open up the list of commits to
develop
on the Cypress repo: https://github.com/cypress-io/cypress/commits/develop - Find the commit that you would like to install the pre-release version of. Click the comment icon (highlighted in red below):
- You should see several comments from the
cypress-bot
user with instructions for installing Cypress pre-releases. Pick the one that corresponds to your operating system and CPU architecture, and follow the instructions there to install the pre-release.
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Notes on pre-releases:
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- Cypress pre-releases are only available for about a month after they are built. Do not rely on these being available past one month.
- If you already have a pre-release or official release installed for a specific version of Cypress, you may need to do
cypress cache clear
before Cypress will install a pre-release. This also applies to installing an official release over a pre-release - if you have a pre-release of Cypress vX.Y.Z installed, the official release of Cypress vX.Y.Z will not install until you docypress cache clear
.