Merge pull request #1552 from ArthurHoaro/feature/better-initializer

[github/shaarli/Shaarli.git] / doc / md / Unit-tests.md

diff --git a/doc/md/Unit-tests.md b/doc/md/Unit-tests.md
index da9931095f96cb08517ab50e461376f91c121a81..a9544656c1012dec098fd1f0b13381446261c52d 100644 (file)
--- a/doc/md/Unit-tests.md
+++ b/doc/md/Unit-tests.md
@@ -1,6 +1,6 @@
-### Setup your environment for tests
+The testing framework used is [PHPUnit](https://phpunit.de/); it can be installed with [Composer](https://getcomposer.org/), which is a dependency management tool.
 
-The framework used is [PHPUnit](https://phpunit.de/); it can be installed with [Composer](https://getcomposer.org/), which is a dependency management tool.
+## Setup a testing environment
 
 ### Install composer
 
@@ -10,41 +10,36 @@ You can either use:
 - a local version, downloadable [here](https://getcomposer.org/download/). To update a local composer installation, run `php composer.phar self-update`
 
 
-#### Install Shaarli dev dependencies
+### Install Shaarli development dependencies
 
 ```bash
 $ cd /path/to/shaarli
 $ composer install
-$ composer update
 ```
 
-#### Install and enable Xdebug to generate PHPUnit coverage reports
+### Install Xdebug
 
-See http://xdebug.org/docs/install
+Xdebug must be installed and enable for PHPUnit to generate coverage reports. See http://xdebug.org/docs/install.
 
 ```bash
 # for Debian-based distributions
-$ aptitude install php5-xdebug
+$ aptitude install php-xdebug
 
 # for ArchLinux:
 $ pacman -S xdebug
 ```
 
-Then add the following line to `/etc/php/php.ini`:
+Then add the following line to `/etc/php/<PHP_VERSION>/cli/php.ini`:
+
 ```ini
 zend_extension=xdebug.so
 ```
 
-#### Run unit tests
+## Run unit tests
 
 Run `make test` and ensure tests return `OK`. If tests return failures, refer to PHPUnit messages and fix your code/tests accordingly.
 
-
-#### Test results and coverage
-
-By default, PHPUnit will run all suitable tests found under the `tests` directory.
-
-Each test has 3 possible outcomes:
+By default, PHPUnit will run all suitable tests found under the `tests` directory. Each test has 3 possible outcomes:
 
 - `.` - success
 - `F` - failure: the test was run but its results are invalid
@@ -79,3 +74,46 @@ To run all tests annotated with `@group WIP`:
 ```bash
 $ vendor/bin/phpunit --group WIP tests/
 ```
+
+### Running tests inside Docker containers
+
+Test Dockerfiles are located under `tests/docker/<distribution>/Dockerfile`,
+and can be used to build Docker images to run Shaarli test suites under common
+Linux environments.
+
+Dockerfiles are provided for the following environments:
+
+- `alpine36` - [Alpine 3.6](https://www.alpinelinux.org/downloads/)
+- `debian8` - [Debian 8 Jessie](https://www.debian.org/DebianJessie) (oldstable)
+- `debian9` - [Debian 9 Stretch](https://wiki.debian.org/DebianStretch) (stable)
+- `ubuntu16` - [Ubuntu 16.04 Xenial Xerus](http://releases.ubuntu.com/16.04/) (LTS)
+
+What's behind the curtains:
+
+- each image provides:
+    - a base Linux OS
+    - Shaarli PHP dependencies (OS packages)
+    - test PHP dependencies (OS packages)
+    - Composer
+- the local workspace is mapped to the container's `/shaarli/` directory,
+- the files are rsync'd so tests are run using a standard Linux user account
+  (running tests as `root` would bypass permission checks and may hide issues)
+- the tests are run inside the container.
+
+To run tests inside a Docker container:
+
+```bash
+# build the Debian 9 Docker image for unit tests
+$ cd /path/to/shaarli
+$ cd tests/docker/debian9
+$ docker build -t shaarli-test:debian9 .
+
+# install/update 3rd-party test dependencies
+$ composer install --prefer-dist
+
+# run tests using the freshly built image
+$ docker run -v $PWD:/shaarli shaarli-test:debian9 docker_test
+
+# run the full test campaign
+$ docker run -v $PWD:/shaarli shaarli-test:debian9 docker_all_tests
+```