ResettableStaticTest.php

<?php

namespace Drupal\KernelTests\Core\Bootstrap;

use Drupal\KernelTests\KernelTestBase;

/**
 * Tests that drupal_static() and drupal_static_reset() work.
 *
 * @group Bootstrap
 */
class ResettableStaticTest extends KernelTestBase {
    
    /**
     * Tests drupal_static() function.
     *
     * Tests that a variable reference returned by drupal_static() gets reset when
     * drupal_static_reset() is called.
     */
    public function testDrupalStatic() {
        $name = __CLASS__ . '_' . __METHOD__;
        $var =& drupal_static($name, 'foo');
        $this->assertEqual($var, 'foo', 'Variable returned by drupal_static() was set to its default.');
        // Call the specific reset and the global reset each twice to ensure that
        // multiple resets can be issued without odd side effects.
        $var = 'bar';
        drupal_static_reset($name);
        $this->assertEqual($var, 'foo', 'Variable was reset after first invocation of name-specific reset.');
        $var = 'bar';
        drupal_static_reset($name);
        $this->assertEqual($var, 'foo', 'Variable was reset after second invocation of name-specific reset.');
        $var = 'bar';
        drupal_static_reset();
        $this->assertEqual($var, 'foo', 'Variable was reset after first invocation of global reset.');
        $var = 'bar';
        drupal_static_reset();
        $this->assertEqual($var, 'foo', 'Variable was reset after second invocation of global reset.');
    }

}