wordpress-develop/tests/phpunit
Sergey Biryukov 1e48121fd6 Tests: Refactor Tests_Image_Functions::test_load_directory() to split the tests and use a data provider.
This one test was testing three different situations. When one assertion fails, the rest of the test would not be executed, so this leads to hiding one error behind another.

Splitting the test into three distinct test methods still allows for testing each situation, but tests each one in isolation and won't hide errors.

The third part of the test, dealing with image editor engine classes, will also now use a data provider.

Using a data provider has a number of advantages:
1. If the first test case fails, it won't prevent the other test cases from being tested.
2. The output from PHPUnit will be more descriptive in case of failure when using a data provider.
3. Using named test cases in the data provider will also make the `--testdox` output much more descriptive and informative.

The actual cases being tested, or the test itself have not been changed.

Includes:
* Adding `@covers` annotations.
* Adding a failure message to each assertion when multiple assertions are used in the test.
* Reusing an existing data provider with the available image editor engine classes.

Follow-up to [1061/tests], [53495], [53497], [53521], [53523], [53524], [53525], [53526], [53529], [53530], [53531].

Props jrf.
See #55652.

git-svn-id: https://develop.svn.wordpress.org/trunk@53537 602fd350-edb4-49c9-b593-d223f7449a82
2022-06-20 19:34:54 +00:00
..
data Themes: Accept valid block themes. 2022-05-20 00:47:45 +00:00
includes Tests: Always include the error message in assertNotWPError() and assertNotIXRError(). 2022-06-20 17:27:15 +00:00
tests Tests: Refactor Tests_Image_Functions::test_load_directory() to split the tests and use a data provider. 2022-06-20 19:34:54 +00:00
build.xml Coding Standards: Replace spaced indentation sections of phpunit.xml.dist, multisite.xml, and build.xml with tabs. 2019-01-28 17:20:06 +00:00
multisite.xml Build/Test Tools: Update PHPUnit configuration for PHPUnit 9.5.10/8.5.21+. 2021-09-26 03:11:18 +00:00
README.txt Docs: Remove double spaces in tests/phpunit/README.txt. 2022-04-29 13:31:48 +00:00
wp-mail-real-test.php Code Modernization: Replace dirname( __FILE__ ) calls with __DIR__ magic constant. 2020-02-06 06:31:22 +00:00

The short version:

1. Create a clean MySQL database and user. DO NOT USE AN EXISTING DATABASE or you will lose data, guaranteed.

2. Copy wp-tests-config-sample.php to wp-tests-config.php, edit it and include your database name/user/password.

3. $ svn up

4. Run the tests from the "trunk" directory:
   To execute a particular test:
      $ phpunit tests/phpunit/tests/test_case.php
   To execute all tests:
      $ phpunit

Notes:

Test cases live in the 'tests' subdirectory. All files in that directory will be included by default. Extend the WP_UnitTestCase class to ensure your test is run.

phpunit will initialize and install a (more or less) complete running copy of WordPress each time it is run. This makes it possible to run functional interface and module tests against a fully working database and codebase, as opposed to pure unit tests with mock objects and stubs. Pure unit tests may be used also, of course.

Changes to the test database will be rolled back as tests are finished, to ensure a clean start next time the tests are run.

phpunit is intended to run at the command line, not via a web server.