cypress-parallel

Reduce up to 40% your Cypress suite execution time parallelizing the test run on the same machine.

| cypress | cypress-parallel |
| :-----------------------------------------------------------------------------------------------------------------------: | :-------------------------------------------------------------------------------------------------------------------------: |
| !cy-serial-small | !cy-parallel_small |

Run your Cypress tests in parallel (locally)

How it works

🔍 - Search for existing Cypress tests\
📄 - Read (if exists) a weight file\
⚖️ - Split spec files into different threads\
⚙️ - For each thread it runs the Cypress command you've passed as argument\
📈 - Wait for all threads to finish and collects the result in a single report

How to use

Install

``
npm i cypress-parallel
`

or

`
yarn add cypress-parallel
`

Add a new script

In your package.json add a new script:

`typescript
"scripts" :{
...
"cy:run": "cypress run", // It can be any cypress command with any argument
"cy:parallel" : "cypress-parallel -s cy:run -t 2 -d -a '\"\"'"
...
}
`

$3

Sample:

`
-a '\"--config baseUrl=http://localhost:3000\"'
`

Launch the new script

`
npm run cy:parallel
`

or

Run with npx (no package installation needed)

`
npx cy:parallel -s cy:run -t 2 -d -a '\"\"'
`

$3

| Option | Alias | Description | Type |
| ----------------- | ----- | ---------------------------------- | ------ |
| --help | | Show help | |
| --version | | Show version number | |
| --script | -s | Your npm Cypress command | string |
| --args | -a | Your npm Cypress command arguments | string |
| --threads | -t | Number of threads | number |
| --specsDir | -d | Cypress specs directory | string |
| --weightsJson | -w | Parallel weights json file | string |
| --reporter | -r | Reporter to pass to Cypress. | string |
| --reporterOptions | -o | Reporter options | string |
| --reporterModulePath | -n | Specify the reporter module path | string |
| --bail | -b | Exit on first failing thread | string |
| --verbose | -v | Some additional logging | string |
| --strictMode | -m | Add stricter checks after running the tests | boolean |

NB: If you use cypress-cucumber-preprocesor, please disable the strictMode to avoid possible errors:

`typescript
"scripts" :{
...
"cy:parallel" : "cypress-parallel -s cy:run -t 4 -m false"
...
}
`

NB: If your cypress-multi-reporters module is not found on the same level as your Cypress suite (e.g. in a mono-repo) then you can specify the module directory for Cypress to search within.

`typescript
"scripts" :{
...
"cy:parallel" : "cypress-parallel -s cy:run -t 4 -n .../../../node_modules/cypress-multi-reporters"
...
}
``

Contributors

Looking for contributors.

License

MIT