public function testBackoffCalculateDelay()
{
$this->assertEquals(0, RetryMiddleware::exponentialDelay(0));
$this->assertEquals(1, RetryMiddleware::exponentialDelay(1));
$this->assertEquals(2, RetryMiddleware::exponentialDelay(2));
$this->assertEquals(4, RetryMiddleware::exponentialDelay(3));
$this->assertEquals(8, RetryMiddleware::exponentialDelay(4));
}
public function __construct(callable $nextHandler)
{
$decider = $this->deciderFn();
$delay = null;
parent::__construct($decider, $nextHandler, $delay);
}