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      // Check if user picture has a valid file ID after saving the user.

      $account = user_load($this->user->uid, TRUE);

      $this->assertTrue(is_object($account->picture), 'User picture object is valid after user load.');

      $this->assertNotNull($account->picture->fid, 'User picture object has a FID after user load.');

      $this->assertTrue(is_file($account->picture->uri), 'File is located in proper directory after user load.');

      user_save($account);

      // Verify that the user save does not destroy the user picture object.

      $this->assertTrue(is_object($account->picture), 'User picture object is valid after user save.');

      $this->assertNotNull($account->picture->fid, 'User picture object has a FID after user save.');

      $this->assertTrue(is_file($account->picture->uri), 'File is located in proper directory after user save.');