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# Building and Testing Protractor | ||
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This document describes building, testing, and releasing Protractor, and provides an overview of | ||
the repository layout. | ||
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## Prerequisite software | ||
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The prerequisite software (Node.js, npm, git, jdk) are the same as for angular. See | ||
https://github.com/angular/angular/blob/master/DEVELOPER.md#prerequisite-software | ||
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## Getting the sources | ||
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Fork Protractor from github, then clone your fork with | ||
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``` | ||
git clone [email protected]:<github username>/protractor.git | ||
# Go to the Protractor directory: | ||
cd protractor | ||
# Add the main protractor repository as an upstream remote to your repository: | ||
git remote add upstream https://github.com/angular/protractor.git | ||
``` | ||
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## Installing and Building | ||
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All Protractor dependencies come from npm. Install with | ||
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``` | ||
npm Install | ||
``` | ||
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This will also trigger our build step. The build step runs the TypeScript compiler | ||
and copies necessary files into the output `built` directory. To run the build step | ||
independently, run: | ||
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``` | ||
npm run prepublish | ||
``` | ||
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You can see the other available npm scripts in `package.json`. Note that most of these | ||
scripts just call our `gulp` commands, which can be seen in `gulpfile.js`. | ||
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## Formatting | ||
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Protractor uses clang-format to format the source code. If the source code is not properly formatted, | ||
the CI will fail and the PR can not be merged. | ||
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You can automatically format your code by running: | ||
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``` | ||
npm run format | ||
``` | ||
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You can check that you will pass lint tests with: | ||
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``` | ||
gulp lint | ||
# or if you don't have gulp installed globally | ||
./node_modules/.bin/gulp lint | ||
``` | ||
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## Code layout | ||
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`docs/` contains markdown documentation files. | ||
`lib/` contains the actual Protractor code. | ||
`scripts/` contains scripts used for CI setup and running tests. | ||
`spec/` contains e2e and unit tests and configuration files for tests. | ||
`testapp/` contains the code for the Angular applications that e2e tests run against. | ||
`website/` contains code for generating Protractor API documentation and the website at protractortest.org | ||
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Most of the code is written in TypeScript, with the exception of a few js files. | ||
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`lib/debugger` is for element explorer, `browser.pause`, and `browser.explore` | ||
`lib/driverProviders` controls how WebDriver instances are created | ||
`lib/frameworks` contains adapters for test frameworks such as Jasmine and Mocha | ||
`lib/selenium-webdriver` and `lib/webdriver-js-extender` are used ONLY for API documentation generation. | ||
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## Lightning Code Walkthrough | ||
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TBD. | ||
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## Testing | ||
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Run `npm test` to run the full test suite. This assumes that you have the testapp and a | ||
selenium server running. Start these as separate processes with: | ||
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``` | ||
webdriver-manager update | ||
webdriver-manager start | ||
``` | ||
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and | ||
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``` | ||
npm start | ||
``` | ||
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This suite is described in `scripts/test.js`. It uses some small helper functions to run commands | ||
as child processes and capture the results, so that we can run protractor commands which should | ||
result in failures and verify that we get the expected number and type of failures. | ||
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The suite contains unit tests, end to end tests using the built binary, and interactive tests. | ||
Interactive tests are for testing `browser.pause` and element explorer. | ||
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End to end tests all have configuration files which live in `spec/`. Many tests do not need | ||
an actual Selenium server backing them, and use the `mockSelenium` configuration, which saves | ||
time by not connecting to a real selenium server. | ||
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## Important dependencies | ||
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Protractor has very close dependencies with several other projects under the Angular umbrella: | ||
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`jasminewd2` is an extension of the Jasmine test framework that adds utilities for | ||
working with selenium-webdriver. github.com/angular/jasminewd | ||
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`blocking-proxy` is a separate binary, which handles traffic between a test script and | ||
webdriver. It can be turned on via a protractor configuration file, and in the future | ||
all logic to wait for Angular will be handled through the blocking proxy. | ||
github.com/angular/blocking-proxy | ||
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`webdriver-manager` is a separate binary which manages installing and starting up | ||
the various binaries necessary for running webdriver tests. These binaries include | ||
specific drivers for various browsers (e.g. chromedriver) and the selenium standalone | ||
server. | ||
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`webdriver-js-extender` extends selenium-webdriver to add Appium commands. | ||
github.com/angular/webdriver-js-extender | ||
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## Continuous Integration | ||
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PRs or changes submitted to master will automatically trigger continuous integration on two | ||
different services - Travis, and Circle CI. We use Travis for tests run with SauceLabs because | ||
we have more vm time on Travis and their integration with SauceLabs is smooth. CircleCI gives us | ||
greater control over the vm, which allows us to run tests against local browsers and get better | ||
logs. | ||
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Travis runs e2e tests via SauceLabs against a variety of browsers. The essential browsers run a | ||
more complete test suite, `specified by spec/ciFullConf.js`. We also run a set of smoke tests | ||
against a larger set of browsers, which is allowed to fail - this is configured in | ||
`spec/ciSmokeConf.js`. This is due to flakiness in IE, Safari and older browser versions. | ||
We also run a small set of tests using BrowserStack to verify that our integration with their | ||
Selenium farm works. | ||
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Circle CI runs a slightly modified version of `npm test` in a single VM. It installs | ||
the browsers it needs locally. Circle CI runs unit tests and a set of e2e tests against Chrome. | ||
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## Releasing | ||
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See `release.md` for full instructions. |
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