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<?php
namespace React\Tests\EventLoop\Timer;
use React\EventLoop\LoopInterface;
use React\Tests\EventLoop\TestCase;
abstract class AbstractTimerTest extends TestCase
{
/**
* @return LoopInterface
*/
abstract public function createLoop();
public function testAddTimerReturnsNonPeriodicTimerInstance()
{
$loop = $this->createLoop();
$timer = $loop->addTimer(0.001, $this->expectCallableNever());
$this->assertInstanceOf('React\EventLoop\TimerInterface', $timer);
$this->assertFalse($timer->isPeriodic());
}
public function testAddTimerWillBeInvokedOnceAndBlocksLoopWhenRunning()
{
$loop = $this->createLoop();
$loop->addTimer(0.001, $this->expectCallableOnce());
$start = microtime(true);
$loop->run();
$end = microtime(true);
// make no strict assumptions about actual time interval.
// must be at least 0.001s (1ms) and should not take longer than 0.1s
$this->assertGreaterThanOrEqual(0.001, $end - $start);
$this->assertLessThan(0.1, $end - $start);
}
public function testAddPeriodicTimerReturnsPeriodicTimerInstance()
{
$loop = $this->createLoop();
$periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableNever());
$this->assertInstanceOf('React\EventLoop\TimerInterface', $periodic);
$this->assertTrue($periodic->isPeriodic());
}
public function testAddPeriodicTimerWillBeInvokedUntilItIsCancelled()
{
$loop = $this->createLoop();
$periodic = $loop->addPeriodicTimer(0.1, $this->expectCallableExactly(3));
// make no strict assumptions about actual time interval.
// leave some room to ensure this ticks exactly 3 times.
$loop->addTimer(0.399, function () use ($loop, $periodic) {
$loop->cancelTimer($periodic);
});
$loop->run();
}
public function testAddPeriodicTimerWillBeInvokedWithMaximumAccuracyUntilItIsCancelled()
{
$loop = $this->createLoop();
$i = 0;
$periodic = $loop->addPeriodicTimer(0.001, function () use (&$i) {
++$i;
});
$loop->addTimer(0.02, function () use ($loop, $periodic) {
$loop->cancelTimer($periodic);
});
$loop->run();
// make no strict assumptions about number of invocations.
// we know it must be no more than 20 times and should at least be
// invoked twice for really slow loops
$this->assertLessThanOrEqual(20, $i);
$this->assertGreaterThan(2, $i);
}
public function testAddPeriodicTimerCancelsItself()
{
$loop = $this->createLoop();
$i = 0;
$loop->addPeriodicTimer(0.001, function ($timer) use (&$i, $loop) {
$i++;
if ($i === 5) {
$loop->cancelTimer($timer);
}
});
$start = microtime(true);
$loop->run();
$end = microtime(true);
$this->assertEquals(5, $i);
// make no strict assumptions about time interval.
// 5 invocations must take at least 0.005s (5ms) and should not take
// longer than 0.1s for slower loops.
$this->assertGreaterThanOrEqual(0.005, $end - $start);
$this->assertLessThan(0.1, $end - $start);
}
public function testMinimumIntervalOneMicrosecond()
{
$loop = $this->createLoop();
$timer = $loop->addTimer(0, function () {});
$this->assertEquals(0.000001, $timer->getInterval());
}
}
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