febe0a6487
- don't repeat link to getcomposer.org - add an example of installing build dependencies on Debian
133 lines
4 KiB
Markdown
133 lines
4 KiB
Markdown
# Unit tests
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Shaarli uses the [PHPUnit](https://phpunit.de/) test framework; it can be installed with [Composer](../Installation.md#from-sources), which is a dependency management tool.
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## Install composer
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You can either use:
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- a system-wide version, e.g. installed through your distro's package manager
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- a local version, downloadable [here](https://getcomposer.org/download/).
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```bash
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# for Debian-based distros
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sudo apt install composer
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```
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## Install Shaarli dev dependencies
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```bash
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$ cd /path/to/shaarli
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$ make composer_dependencies_dev
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```
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## Install and enable Xdebug to generate PHPUnit coverage reports
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[Xdebug](http://xdebug.org/docs/install) is a PHP extension which provides debugging and profiling capabilities. Install Xdebug:
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```bash
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# for Debian-based distros:
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sudo apt install php-xdebug
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# for ArchLinux:
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pacman -S xdebug
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# then add the following line to /etc/php/php.ini
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zend_extension=xdebug.so
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```
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## Run unit tests
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Ensure tests pass successuflly:
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```bash
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make test
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# ...
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# OK (36 tests, 65 assertions)
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```
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In case of failure the test suite will point you to actual errors and output a summary:
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```bash
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make test
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# ...
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# FAILURES!
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# Tests: 36, Assertions: 63, Errors: 1, Failures: 2.
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```
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By default, PHPUnit will run all suitable tests found under the `tests` directory. Each test has 3 possible outcomes:
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- `.` - success
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- `F` - failure: the test was run but its results are invalid
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- the code does not behave as expected
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- dependencies to external elements: globals, session, cache...
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- `E` - error: something went wrong and the tested code has crashed
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- typos in the code, or in the test code
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- dependencies to missing external elements
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If Xdebug has been installed and activated, two coverage reports will be generated:
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- a summary in the console
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- a detailed HTML report with metrics for tested code
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- to open it in a web browser: `firefox coverage/index.html &`
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### Executing specific tests
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Add a [`@group`](https://phpunit.de/manual/current/en/appendixes.annotations.html#appendixes.annotations.group) annotation in a test class or method comment:
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```php
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/**
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* Netscape bookmark import
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* @group WIP
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*/
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class BookmarkImportTest extends PHPUnit_Framework_TestCase
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{
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[...]
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}
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```
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To run all tests annotated with `@group WIP`:
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```bash
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$ vendor/bin/phpunit --group WIP tests/
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```
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## Running tests inside Docker containers
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Unit tests can be run inside [Docker](../Docker.md) containers.
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Test Dockerfiles are located under `tests/docker/<distribution>/Dockerfile`, and can be used to build Docker images to run Shaarli test suites under commonLinux environments. Dockerfiles are provided for the following environments:
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- [`alpine36`](https://github.com/shaarli/Shaarli/blob/master/tests/docker/alpine36/Dockerfile) - [Alpine Linux 3.6](https://www.alpinelinux.org/downloads/)
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- [`debian8`](https://github.com/shaarli/Shaarli/blob/master/tests/docker/debian8/Dockerfile) - [Debian 8 Jessie](https://www.debian.org/DebianJessie) (oldoldstable)
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- [`debian9`](https://github.com/shaarli/Shaarli/blob/master/tests/docker/debian9/Dockerfile) - [Debian 9 Stretch](https://wiki.debian.org/DebianStretch) (oldstable)
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- [`ubuntu16`](https://github.com/shaarli/Shaarli/blob/master/tests/docker/ubuntu16/Dockerfile) - [Ubuntu 16.04 Xenial Xerus](http://releases.ubuntu.com/16.04/) (old LTS)
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Each image provides:
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- a base Linux OS
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- Shaarli PHP dependencies (OS packages)
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- test PHP dependencies (OS packages)
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- Composer
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- Tests that run inside the conatiner using a standard Linux user account (running tests as `root` would bypass permission checks and may hide issues)
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Build a test image:
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```bash
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# build the Debian 9 Docker image
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cd /path/to/shaarli/tests/docker/debian9
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docker build -t shaarli-test:debian9 .
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```
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Run unit tests in a container:
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```bash
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cd /path/to/shaarli
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# install/update 3rd-party test dependencies
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composer install --prefer-dist
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# run tests using the freshly built image
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docker run -v $PWD:/shaarli shaarli-test:debian9 docker_test
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# run the full test campaign
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docker run -v $PWD:/shaarli shaarli-test:debian9 docker_all_tests
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```
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