protractor-cucumber-framework

Cucumber framework plugin for Protractor

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Protractor Cucumber Framework

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This framework was originally part of angular/protractor and is now a separate module to decouple cucumber.js.

The project relies on Serenity/JS to enable integration between Protractor and Cucumber 1.x - 7.x and offer support for both Cucumber.js-native and Serenity/JS reporters.

To see Serenity/JS reports in action, check out the demo project and the reports it produces.

Install

To install this module, run the following command in your computer terminal:

npm install --save-dev protractor-cucumber-framework

Please note that to use protractor-cucumber-framework you'll need a recent Long-Term Support versions of Node.js, so 12, 14, or 16.

Odd-numbered Node.js releases (11, 13, 15, etc.) are not on the LTS line, should be considered experimental, and should not be used in production.

Implementation

To implement this framework, utilize the protractor custom framework config option:

exports.config = {
  // set to "custom" instead of cucumber.
  framework: 'custom',

  // path relative to the current config file
  frameworkPath: require.resolve('protractor-cucumber-framework'),

  // require feature files
  specs: [
    'path/to/feature/files/**/*.feature' // accepts a glob
  ],

  cucumberOpts: {
    // require step definitions
    require: [
      'path/to/step/definitions/**/*.steps.js' // accepts a glob
    ]
  }
};

To configure Serenity/JS reporting services, check out the demo project and consult the Serenity/JS Handbook.

Passing Options to Cucumber.js

All of the cucumberOpts will be passed to cucumberjs as arguments.

For example, to call cucumberjs with the --strict, --no-colors, and to specify custom formatters:

cucumberOpts: {
  strict: true,
  'no-colors': true,
  format: ['progress', 'pretty:output.txt'],
  // ...
}

The following parameters have special behavior:

  • require - globs will be expanded to multiple --require arguments
  • rerun - value is passed as an argument; for use with the rerun feature

Formatters when tests are sharded or with multi capabilities

If you have a formatter that outputs to a path and your tests are sharded or you have multi capabilities then this library will add the PID to the path to make them unique. The reason for this is multiple processes can write to the same path which ends up clobbering each other. You'll end up with 1 file per process that protractor spawns.

exports.config = {
  capabilities: {
    shardTestFiles: true,
    // ...
  },

  cucumberOpts: {
    format: 'json:results.json',
    // ...
  }
};

If there were 2 feature files then you can expect the following output files...

  results.11111.json
  results.22222.json

...where the numbers will be the actual PIDs.

Uncaught Exceptions

If your process abruptly stops with an exit code 199 then your steps most likely threw an uncaught exception. Protractor is capturing these and exiting the process in this situation. The solution is to upgrade to at least protractor version 4.0.10 and add the following to your protractor conf...

  ignoreUncaughtExceptions: true

This allows cucumber to handle the exception and record it appropriately.

Contributing

Pull requests are welcome. Commits should have an appropriate message and be squashed.

For Contributors

Ensure that the following dependencies are installed:

  • Java SDK and JRE
  • Node.js
  • Google Chrome

Clone the github repository:

git clone https://github.com/protractor-cucumber-framework/protractor-cucumber-framework
cd protractor-cucumber-framework
npm install

Testing

Start a selenium server:

npm run webdriver

Start the test app that tests will be run against in a separate shell:

npm start

Run the tests in a separate shell:

npm test

For Maintainers

Releasing

  1. bump version
  2. npm publish
  3. tag release (git tag vx.x.x && git push origin master --tags)
  4. build github release (npx release)

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