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amp/test/TimeoutTest.php

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<?php
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namespace Amp\Test;
use Amp\Failure;
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use Amp\PHPUnit\AsyncTestCase;
use Amp\Promise;
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use Amp\Success;
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use Amp\TimeoutException;
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use function Amp\asyncValue;
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use function Amp\await;
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use function Revolt\EventLoop\delay;
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class TimeoutTest extends AsyncTestCase
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{
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public function testSuccessfulPromise(): void
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{
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$value = 1;
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$promise = new Success($value);
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$promise = Promise\timeout($promise, 10);
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self::assertInstanceOf(Promise::class, $promise);
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$callback = function ($exception, $value) use (&$result) {
$result = $value;
};
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$promise->onResolve($callback);
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self::assertSame($value, await($promise));
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}
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public function testFailedPromise(): void
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{
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$exception = new \Exception;
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$promise = new Failure($exception);
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try {
await(Promise\timeout($promise, 10));
} catch (\Throwable $reason) {
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self::assertSame($exception, $reason);
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return;
}
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self::fail("Promise should have failed");
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}
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/**
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* @depends testSuccessfulPromise
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*/
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public function testFastPending(): void
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{
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$value = 1;
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$promise = asyncValue(10, $value);
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self::assertSame($value, await(Promise\timeout($promise, 20)));
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delay(0); // Tick event loop to invoke onResolve callback to remove watcher.
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}
/**
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* @depends testSuccessfulPromise
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*/
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public function testSlowPending(): void
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{
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$promise = asyncValue(20);
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try {
await(Promise\timeout($promise, 10));
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self::fail("Promise did not fail");
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} catch (TimeoutException $reason) {
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self::assertNull(await($promise));
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}
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}
/**
* @depends testSuccessfulPromise
*/
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public function testSlowPendingWithDefault(): void
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{
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$value = 0;
$default = 1;
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$promise = asyncValue(20, $value);
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self::assertSame($default, await(Promise\timeoutWithDefault($promise, 10, $default)));
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self::assertSame($value, await($promise));
}
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}