Chris@0: <?php
Chris@0: 
Chris@0: namespace Drupal\Tests\Component\Utility;
Chris@0: 
Chris@0: use Drupal\Component\Utility\Crypt;
Chris@0: use PHPUnit\Framework\TestCase;
Chris@0: 
Chris@0: /**
Chris@0:  * Tests random byte generation fallback exception situations.
Chris@0:  *
Chris@0:  * @group Utility
Chris@0:  *
Chris@0:  * @runTestsInSeparateProcesses
Chris@0:  *
Chris@0:  * @coversDefaultClass \Drupal\Component\Utility\Crypt
Chris@0:  */
Chris@0: class CryptRandomFallbackTest extends TestCase {
Chris@0: 
Chris@18:   protected static $functionCalled = 0;
Chris@0: 
Chris@0:   /**
Chris@0:    * Allows the test to confirm that the namespaced random_bytes() was called.
Chris@0:    */
Chris@0:   public static function functionCalled() {
Chris@0:     static::$functionCalled++;
Chris@0:   }
Chris@0: 
Chris@0:   /**
Chris@0:    * Tests random byte generation using the fallback generator.
Chris@0:    *
Chris@0:    * If the call to random_bytes() throws an exception, Crypt::random_bytes()
Chris@0:    * should still return a useful string of random bytes.
Chris@0:    *
Chris@0:    * @covers ::randomBytes
Chris@0:    *
Chris@0:    * @see \Drupal\Tests\Component\Utility\CryptTest::testRandomBytes()
Chris@0:    */
Chris@0:   public function testRandomBytesFallback() {
Chris@0:     // This loop is a copy of
Chris@0:     // \Drupal\Tests\Component\Utility\CryptTest::testRandomBytes().
Chris@0:     for ($i = 0; $i < 10; $i++) {
Chris@0:       $count = rand(10, 10000);
Chris@0:       // Check that different values are being generated.
Chris@0:       $this->assertNotEquals(Crypt::randomBytes($count), Crypt::randomBytes($count));
Chris@0:       // Check the length.
Chris@0:       $this->assertEquals($count, strlen(Crypt::randomBytes($count)));
Chris@0:     }
Chris@0:     $this->assertEquals(30, static::$functionCalled, 'The namespaced function was called the expected number of times.');
Chris@0:   }
Chris@0: 
Chris@0: }
Chris@0: 
Chris@0: namespace Drupal\Component\Utility;
Chris@0: 
Chris@0: use Drupal\Tests\Component\Utility\CryptRandomFallbackTest;
Chris@0: 
Chris@0: /**
Chris@0:  * Defines a function in same namespace as Drupal\Component\Utility\Crypt.
Chris@0:  *
Chris@0:  * Forces throwing an exception in this test environment because the function
Chris@0:  * in the namespace is used in preference to the global function.
Chris@0:  *
Chris@0:  * @param int $count
Chris@0:  *   Matches the global function definition.
Chris@0:  *
Chris@0:  * @throws \Exception
Chris@0:  */
Chris@0: function random_bytes($count) {
Chris@0:   CryptRandomFallbackTest::functionCalled();
Chris@0:   throw new \Exception($count);
Chris@0: }