Merge commit 'd435f549fe9bbfbea64ed9be36104e7a23f9603c' as 'libraries/action-scheduler'

libraries/action-scheduler/tests/phpunit/deprecated/ActionScheduler_UnitTestCase.php

@@ -0,0 +1,71 @@
+<?php
+// phpcs:disable WordPress.DateTime.RestrictedFunctions.timezone_change_date_default_timezone_set
+// phpcs:disable Generic.Classes.DuplicateClassName.Found
+
+/**
+ * Class ActionScheduler_UnitTestCase
+ */
+class ActionScheduler_UnitTestCase extends WP_UnitTestCase {
+
+	/**
+	 * Timezone string.
+	 *
+	 * @var string
+	 */
+	protected $existing_timezone;
+
+	/**
+	 * Perform test set-up work.
+	 */
+	public function set_up() {
+		ActionScheduler_Callbacks::add_callbacks();
+		parent::set_up();
+	}
+
+	/**
+	 * Perform test tear-down work.
+	 */
+	public function tear_down() {
+		ActionScheduler_Callbacks::remove_callbacks();
+		parent::tear_down();
+	}
+
+	/**
+	 * Counts the number of test cases executed by run(TestResult result).
+	 *
+	 * @return int
+	 */
+	public function count() {
+		return ( 'UTC' === date_default_timezone_get() ) ? 2 : 3;
+	}
+
+	/**
+	 * We want to run every test multiple times using a different timezone to make sure
+	 * that they are unaffected by changes to PHP's timezone.
+	 *
+	 * @param null|PHPUnit_Framework_TestResult $result Test result.
+	 */
+	public function run( ?PHPUnit_Framework_TestResult $result = null ) {
+
+		if ( is_null( $result ) ) {
+			$result = $this->createResult();
+		}
+
+		$this->existing_timezone = date_default_timezone_get();
+
+		if ( 'UTC' !== $this->existing_timezone ) {
+			date_default_timezone_set( 'UTC' );
+			$result->run( $this );
+		}
+
+		date_default_timezone_set( 'Pacific/Fiji' ); // UTC+12.
+		$result->run( $this );
+
+		date_default_timezone_set( 'Pacific/Tahiti' ); // UTC-10: it's a magical place.
+		$result->run( $this );
+
+		date_default_timezone_set( $this->existing_timezone );
+
+		return $result;
+	}
+}