class MigrateExecutableMemoryExceededTest

class MigrateExecutableMemoryExceededTest extends MigrateTestCase {
  
  /**
   * The mocked migration entity.
   *
   * @var \Drupal\migrate\Plugin\MigrationInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $migration;
  
  /**
   * The mocked migrate message.
   *
   * @var \Drupal\migrate\MigrateMessageInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $message;
  
  /**
   * The tested migrate executable.
   *
   * @var \Drupal\Tests\migrate\Unit\TestMigrateExecutable
   */
  protected $executable;
  
  /**
   * The migration configuration, initialized to set the ID to test.
   *
   * @var array
   */
  protected $migrationConfiguration = [
    'id' => 'test',
  ];
  
  /**
   * The php.ini memory_limit value.
   *
   * @var int
   */
  protected $memoryLimit = 10000000;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->migration = $this->getMigration();
    $this->message = $this->createMock('Drupal\\migrate\\MigrateMessageInterface');
    $this->executable = new TestMigrateExecutable($this->migration, $this->message);
    $this->executable
      ->setStringTranslation($this->getStringTranslationStub());
  }
  
  /**
   * Runs the actual test.
   *
   * @param string $message
   *   The second message to assert.
   * @param bool $memory_exceeded
   *   Whether to test the memory exceeded case.
   * @param int|null $memory_usage_first
   *   (optional) The first memory usage value. Defaults to NULL.
   * @param int|null $memory_usage_second
   *   (optional) The fake amount of memory usage reported after memory reclaim.
   *   Defaults to NULL.
   * @param int|null $memory_limit
   *   (optional) The memory limit. Defaults to NULL.
   */
  protected function runMemoryExceededTest($message, $memory_exceeded, $memory_usage_first = NULL, $memory_usage_second = NULL, $memory_limit = NULL) {
    $this->executable
      ->setMemoryLimit($memory_limit ?: $this->memoryLimit);
    $this->executable
      ->setMemoryUsage($memory_usage_first ?: $this->memoryLimit, $memory_usage_second ?: $this->memoryLimit);
    $this->executable
      ->setMemoryThreshold(0.85);
    if ($message) {
      $this->executable->message
        ->expects($this->exactly(2))
        ->method('display')
        ->withConsecutive([
        $this->callback(function ($subject) {
          return mb_stripos((string) $subject, 'reclaiming memory') !== FALSE;
        }),
      ], [
        $this->callback(function ($subject) use ($message) {
          return mb_stripos((string) $subject, $message) !== FALSE;
        }),
      ]);
    }
    else {
      $this->executable->message
        ->expects($this->never())
        ->method($this->anything());
    }
    $result = $this->executable
      ->memoryExceeded();
    $this->assertEquals($memory_exceeded, $result);
  }
  
  /**
   * Tests memoryExceeded method when a new batch is needed.
   */
  public function testMemoryExceededNewBatch() {
    // First case try reset and then start new batch.
    $this->runMemoryExceededTest('starting new batch', TRUE);
  }
  
  /**
   * Tests memoryExceeded method when enough is cleared.
   */
  public function testMemoryExceededClearedEnough() {
    $this->runMemoryExceededTest('reclaimed enough', FALSE, $this->memoryLimit, $this->memoryLimit * 0.75);
  }
  
  /**
   * Tests memoryExceeded when memory usage is not exceeded.
   */
  public function testMemoryNotExceeded() {
    $this->runMemoryExceededTest('', FALSE, floor($this->memoryLimit * 0.85) - 1);
  }

}