Sergey Biryukov 55cddb2ac9 Tests: Resolve WP_Query test failures on MariaDB due to indeterminate sort order.
[54768] added a few tests to verify that caching within `WP_Query` is bypassed when the `SELECT` clause has been modified via a filter, to avoid cache key collisions and the returning of incomplete or unexpected results.

However, creating several posts with the same date/time fields can result in inconsistent sort ordering between MySQL and MariaDB, as each engine refines the order further using a different index.

This commit aims to stabilize the tests by using `assertEqualSets()` instead of `assertEquals()`, since testing the order is out of their scope. Includes removing `array_unshift()` and `array_reverse()` calls as no longer needed.

This resolves a few test failures on MariaDB along the lines of:
{{{
Tests_Query_FieldsClause::test_should_limit_fields_to_id_and_parent_subset
Posts property for first query is not of expected form.
Failed asserting that two arrays are equal.
--- Expected
+++ Actual
@@ @@
 Array (
     0 => stdClass Object (
-        'ID' => 36019
+        'ID' => 36015
         'post_parent' => 0
     )
     1 => stdClass Object (
-        'ID' => 36018
+        'ID' => 36016
         'post_parent' => 0
     )
     2 => stdClass Object (...)
     3 => stdClass Object (
-        'ID' => 36016
+        'ID' => 36018
         'post_parent' => 0
     )
     4 => stdClass Object (
-        'ID' => 36015
+        'ID' => 36019
         'post_parent' => 0
     )
 )

/tmp/wp-test-runner/tests/phpunit/tests/query/fieldsClause.php:67
/tmp/wp-test-runner/phpunit-5.7.phar:598
}}}

Follow-up to [54768].

Props peterwilsoncc, SergeyBiryukov.
See #57012.

git-svn-id: https://develop.svn.wordpress.org/trunk@54829 602fd350-edb4-49c9-b593-d223f7449a82
2022-11-12 14:49:25 +00:00
..