refactor: move into a website directory
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title: Fixing Drupal SimpleTest issues inside Docker Containers
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date: 2017-05-05
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excerpt: How I managed to get my Drupal SimpleTest tests to run and pass within Docker containers.
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tags:
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- docker
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- drupal
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- drupal-planet
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- simpletest
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- testing
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---
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I’ve been a Drupal VM user for a long time, but lately I’ve been using a
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combination Drupal VM and Docker for my local development environment. There
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were a couple of issues preventing me from completely switching to Docker - one
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of which being that when I tried running of my Simpletest tests, a lot of them
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would fail where they would pass when run within Drupal VM.
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Here’s an excerpt from my `docker-compose.yml` file:
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**TL;DR** You need to include the name of your web server container as the
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`--url` option to `run-scripts.php`.
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I’ve been a [Drupal VM][1] user for a long time, but lately I’ve been using a
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combination Drupal VM and [Docker][0] for my local development environment.
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There were a couple of issues preventing me from completely switching to
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Docker - one of which being that when I tried running of my Simpletest tests, a
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lot of them would fail where they would pass when run within Drupal VM.
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Here’s an excerpt from my `docker-compose.yml` file:
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```language-yaml
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services:
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php:
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image: wodby/drupal-php:5.6
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volumes:
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- ./repo:/var/www/html
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nginx:
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image: wodby/drupal-nginx:7-1.10
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environment:
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NGINX_BACKEND_HOST: php
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NGINX_SERVER_ROOT: /var/www/html/web
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ports:
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- "80:80"
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volumes_from:
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- php
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...
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```
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Nginx and PHP-FPM are running in separate containers, the volumes are shared
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across both and the Nginx backend is set to use the `php` container.
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This is the command that I was using to run the tests:
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```language-bash
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$ docker-compose run --rm \
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-w /var/www/html/web \
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php \
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php scripts/run-tests.sh \
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--php /usr/local/bin/php \
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--class OverrideNodeOptionsTestCase
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```
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This creates a new instance of the `php` container, sets the working directory
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to my Drupal root and runs Drupal’s `run-tests.sh` script with some arguments.
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In this case, I'm running the `OverrideNodeOptionsTestCase` class for the
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override_node_options tests. Once complete, the container is deleted because of
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the `--rm` option.
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This resulted in 60 of the 112 tests failing, whereas they all passed when run
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within a Drupal VM instance.
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```language-markup
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Test summary
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------------
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Override node options 62 passes, 60 fails, 29 exceptions, and 17 debug messages
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Test run duration: 2 min 25 sec
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```
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Running the tests again with the`--verbose` option, I saw this message appear in
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the output below some of the failing tests:
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> simplexml_import_dom(): Invalid Nodetype to import
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\*\*Up After checking that I had all of the required PHP extensions installed, I
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ran `docker-compose exec php bash` to connect to the `php` container and ran
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`curl http://localhost` to check the output. Rather than seeing the HTML for the
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site, I got this error message:
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> curl: (7) Failed to connect to localhost port 80: Connection refused
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Whereas `curl http://nginx` returns the HTML for the page, so included it with
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the `--url` option to `run-tests.sh`, and this resulted in my tests all passing.
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```language-bash
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$ docker-compose run --rm \
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-w /var/www/html/web \
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php \
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php scripts/run-tests.sh \
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--php /usr/local/bin/php \
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--url http://nginx \
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--class OverrideNodeOptionsTestCase
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```
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```language-markup
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Test summary
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------------
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Override node options 121 passes, 0 fails, 0 exceptions, and 34 debug messages
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Test run duration: 2 min 31 sec
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```
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**Note:** In this example I have separate `nginx` and `php` containers, but I've
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tried and had the same issue when running Nginx and PHP-FPM in the same
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container - e.g. called `app` - and still needed to add `--url http://app` in
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order for the tests to run successfully.
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I don’t know if this issue is macOS specfic (I know that [Drupal CI][2] is based
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on Docker, and I don’t know if it’s an issue) but I’m going to test also on my
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Ubuntu Desktop environment and investigate further and also compare the test run
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times for Docker in macOS, Docker in Ubuntu and within Drupal VM. I’m also going
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to test this with PHPUnit tests with Drupal 8.
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[0]: https://www.docker.com
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[1]: https://www.drupalvm.com
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[2]: https://www.drupal.org/drupalorg/docs/drupal-ci
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