$cpIndex = null;
$cp->shutdown( null, 'sync', $cpIndex );
- $this->assertEquals( null, $cpIndex, "CP write index retained" );
+ $this->assertNull( $cpIndex, "CP write index retained" );
$this->assertEquals( '45e93a9c215c031d38b7c42d8e4700ca', $cp->getClientId() );
}