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michael-kerscher 48b2b5c312
Add a test framework to test the JS part of the course (#2471)
This is a first draft for a test framework for testing the JS part of
the book that is discussed in #2462

It is using [webdriverIO](https://webdriver.io/) and the webdriverIO
[Expect API](https://webdriver.io/docs/api/expect-webdriverio/) in
combination with [Mocha](https://mochajs.org/). WebdriverIO is taking
care of accessing the webpage with a real browser and can access the
state of the page so behavior can be asserted.

Currently only a small test for the speaker-notes implementation demos
the functionality.

The [Static Server
Service](https://webdriver.io/docs/static-server-service/) is used to
serve the book in a way that the test runner can access it.

A CI integration can look like https://webdriver.io/docs/githubactions/
and is implemented with a headless setup. In CI it uses the language
variable to set environment variable that configures where the built
book should be mounted from

---------

Co-authored-by: Martin Geisler <martin@geisler.net>
2024-12-04 09:06:58 +00:00

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# Testing Comprehensive Rust
The course material contains JS code that can break and needs to be checked for
functionality. Examples are `theme/speaker-notes.js` or `theme/book.js`.
Comprehensive Rust is using [webdriverIO](https://webdriver.io/) and the
[webdriverIO Expect API](https://webdriver.io/docs/api/expect-webdriverio/) in
combination with [Mocha] (https://mochajs.org/). WebdriverIO is taking care of
accessing the webpage with a real browser and can access the state of the page
so behavior can be asserted.
The [Static Server Service](https://webdriver.io/docs/static-server-service/) is
used mainly in the [CI](../github/workflows/build.yml) to serve the book on port
`localhost:8080` such that the test runner can access it. This mode is used when
`npm start` or `npm test` is executed.
For local testing and quick iterations it is possible to use `mdbook serve`
which creates a small HTTP server on port 3000 by default. There is a special
config that is invoked with `npm run test-mdbook` that uses
`http://localhost:3000`