$key, 30, $checkFunc, [ 'staleTTL' => 50 ] + $extOpts );
$this->assertEquals( 'xxx3', $v, "Value still returned after expired" );
$this->assertEquals( 3, $wasSet, "Value recalculated while expired" );
$key, 30, $checkFunc, [ 'staleTTL' => 50 ] + $extOpts );
$this->assertEquals( 'xxx3', $v, "Value still returned after expired" );
$this->assertEquals( 3, $wasSet, "Value recalculated while expired" );