Testing (Quick-Start Guide)

Unit Tests

Until the documentation is in full effect, it's recommended that a GraphiQL-based tool like WPGraphiQL be used to view the GraphQL schema, an alternative to this is viewing the unit tests located in tests/wpunit directory. Which are constantly updated along with the project. If you're interested in contributing when I begin accepting contribution or simply want to run the tests. Follow the instruction below.

Prerequisties

Shell/CMD access
Composer
WP-CLI

Setup

Make sure all dependencies are install by running composer install from the CMD/Terminal in the project directory.
Next the copy 2 distributed files with the .dist in there filenames. For instance .env.dist becomes .env and wpunit.suite.dist.yml becomes wpunit.suite.yml. The distributed files and what their copied names should are as follows.
- codeception.dist.yml => codeception.yml
- .env.dist => .env

Next open .env and alter to make you usage.

# docker ENV variables
DB_NAME=wordpress
DB_HOST=app_db
DB_USER=wordpress
DB_PASSWORD=wordpress
WP_TABLE_PREFIX=wp_
WP_URL=http://localhost
WP_DOMAIN=localhost
ADMIN_EMAIL=admin@example.com
ADMIN_USERNAME=admin
ADMIN_PASSWORD=password
ADMIN_PATH=/wp-admin
# local codeception/install-wp-tests ENV variables
TEST_DB_NAME=woographql_tests
TEST_DB_HOST=127.0.0.1
TEST_DB_USER=wordpress
TEST_DB_PASSWORD=wordpress
TEST_WP_TABLE_PREFIX=wp_
# install-wp-tests ENV variables
SKIP_DB_CREATE=false
TEST_WP_ROOT_FOLDER=/tmp/wordpress
TEST_ADMIN_EMAIL=admin@wp.test
# codeception ENV variables
TESTS_DIR=tests
TESTS_OUTPUT=tests/_output
TESTS_DATA=tests/_data
TESTS_SUPPORT=tests/_support
TESTS_ENVS=tests/_envs

docker ENV variables: variables defined for use in the Docker/Docker-Compose setups. These are also used in codeception.dist.yml for testing within a Docker container. It's recommend that this file be left unchanged and a codeception.yml be created for local codeception unit testing.
local codeception/install-wp-tests ENV variables: variable defined for use with codeception testing w/o docker and the install-wp-tests script in the bin directory. As mentioned above a codeception.yml should be created from codeception.dist.yml and the variables in the WPLoader config should be set accordingly.
install-wp-tests ENV variables: variables specific to the install-wp-tests script. The script can be run using composer install-wp-tests in the terminal from project directory.
codeception ENV variables: variables used by codeception. This includes within the docker container as well.

Once you have finish modifying the .env file. Run composer install-wp-tests from the project directory.
Upon success you can begin running the tests.

Running Tests

To run test use the command vendor/bin/codecept run [suite [test [:test-function]]]. If you use the command with at least a suite specified, Codeception will run all tests, however this is not recommended. Running a suite vendor/bin/codecept run wpunit or a test vendor/bin/codecept run CouponQueriesTest is recommended. Running a single test-function like vendor/bin/codecept run ProductQueriesTest:testProductsQueryAndWhereArgs is also possible.

To learn more about the usage of Codeception with WordPress view the Documentation

Functional and Acceptance Tests (Docker & Docker-Compose Required)

It's possible to run functional and acceptance tests, but is very limited at the moment. The script docker entrypoint script runs all three suites (acceptance, functional, and wpunit) at once. This will change eventually, however as of right now, this is the limitation.

Running Tests

Even though the two suites use a Docker environment to run, the testing service in the docker.compose.yml file requires the .env.dist and codeception.dist.yml untouched. Run the following in the terminal to run all three suites. Isolating specific suites should be simple to figure out.

docker-compose run --rm \
-e SUITES=acceptance;wpunit;functional \
-e DEBUG=1 -e COVERAGE=1 testing --scale app=0

The COVERAGE, and DEBUG vars are optional flags for toggle codecoverage and debug output.
--scale app=0 ensures that the service running a local app doesn't create any instances. It must be added or a collision with mysql will occur. More on this service in the next section

Using Docker-Compose to Run a Local Installation for Live Testing.

This is rather simple just like with testing using docker ensure that env.dist and codeception.dist.yml are untouched.

Run docker-compose up --scale testing=0 app
wait for app_1 | Success: Exported to '/var/www/html/wp-content/plugins/wp-graphql-woocommerce/tests/_data/dump.sql'. to print to the terminal.
navigate to http://localhost:8091. And that's it. You can view the configuration for the installation in the docker-compose.yml. NOTE: if you get redirected to http://localhost run docker-compose down to remove any existing containers related to the project, then re-run Step 1.

For more information about the docker-image uses in the service, it's on Docker Hub.

Contributing

Local Testing