79 lines
3.8 KiB
Markdown
79 lines
3.8 KiB
Markdown
# WooCommerce Tests
|
|
|
|
## Table of contents
|
|
|
|
- [WooCommerce Unit Tests](#woocommerce-unit-tests)
|
|
- [Initial Setup](#initial-setup)
|
|
- [Running Tests](#running-tests)
|
|
- [Writing Tests](#writing-tests)
|
|
- [Automated Tests](#automated-tests)
|
|
- [Code Coverage](#code-coverage)
|
|
- [WooCommerce E2E Tests](#woocommerce-e2e-tests)
|
|
|
|
## WooCommerce Unit Tests
|
|
|
|
### Initial Setup
|
|
|
|
From the WooCommerce root directory (if you are using VVV you might need to `vagrant ssh` first), run the following:
|
|
|
|
1. Install [PHPUnit](http://phpunit.de/) via Composer by running:
|
|
```
|
|
$ composer install
|
|
```
|
|
|
|
2. Install WordPress and the WP Unit Test lib using the `install.sh` script:
|
|
```
|
|
$ tests/bin/install.sh <db-name> <db-user> <db-password> [db-host]
|
|
```
|
|
|
|
You may need to quote strings with backslashes to prevent them from being processed by the shell or other programs.
|
|
|
|
Example:
|
|
|
|
$ tests/bin/install.sh woocommerce_tests root root
|
|
|
|
# woocommerce_tests is the database name and root is both the MySQL user and its password.
|
|
|
|
**Important**: The `<db-name>` database will be created if it doesn't exist and all data will be removed during testing.
|
|
|
|
### Running Tests
|
|
|
|
Change to the plugin root directory and type:
|
|
|
|
$ vendor/bin/phpunit
|
|
|
|
The tests will execute and you'll be presented with a summary.
|
|
|
|
You can run specific tests by providing the path and filename to the test class:
|
|
|
|
$ vendor/bin/phpunit tests/unit-tests/importer/product.php
|
|
|
|
A text code coverage summary can be displayed using the `--coverage-text` option:
|
|
|
|
$ vendor/bin/phpunit --coverage-text
|
|
|
|
### Writing Tests
|
|
|
|
* Each test file should roughly correspond to an associated source file, e.g. the `formatting/functions.php` test file covers code in the `wc-formatting-functions.php` file
|
|
* Each test method should cover a single method or function with one or more assertions
|
|
* A single method or function can have multiple associated test methods if it's a large or complex method
|
|
* Use the test coverage HTML report (under `tmp/coverage/index.html`) to examine which lines your tests are covering and aim for 100% coverage
|
|
* For code that cannot be tested (e.g. they require a certain PHP version), you can exclude them from coverage using a comment: `// @codeCoverageIgnoreStart` and `// @codeCoverageIgnoreEnd`. For example, see [`wc_round_tax_total()`](https://github.com/woocommerce/woocommerce/blob/35f83867736713955fa2c4f463a024578bb88795/includes/wc-formatting-functions.php#L208-L219)
|
|
* In addition to covering each line of a method/function, make sure to test common input and edge cases.
|
|
* Prefer `assertSame()` where possible as it tests both type and value
|
|
* Remember that only methods prefixed with `test` will be run so use helper methods liberally to keep test methods small and reduce code duplication. If there is a common helper method used in multiple test files, consider adding it to the `WC_Unit_Test_Case` class so it can be shared by all test cases
|
|
* Filters persist between test cases so be sure to remove them in your test method or in the `tearDown()` method.
|
|
* Use data providers where possible. Be sure that their name is like `data_provider_function_to_test` (i.e. the data provider for `test_is_postcode` would be `data_provider_test_is_postcode`). Read more about data providers [here](https://phpunit.de/manual/current/en/writing-tests-for-phpunit.html#writing-tests-for-phpunit.data-providers).
|
|
|
|
### Automated Tests
|
|
|
|
Tests are automatically run with [Travis-CI](https://travis-ci.org/woocommerce/woocommerce) for each commit and pull request.
|
|
|
|
### Code Coverage
|
|
|
|
Code coverage is available on [Codecov](https://codecov.io/gh/woocommerce/woocommerce/) which receives updated data after each Travis build.
|
|
|
|
## WooCommerce E2E Tests
|
|
|
|
See [e2e-tests README](https://github.com/woocommerce/woocommerce/tree/master/tests/e2e-tests) to learn how to setup testing environment for running e2e tests and run them.
|