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amp/test/Future/SomeTest.php

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<?php
namespace Amp\Future;
use Amp\CancelledException;
use Amp\CompositeException;
use Amp\Deferred;
use Amp\Future;
use Amp\TimeoutCancellationToken;
use PHPUnit\Framework\TestCase;
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use Revolt\EventLoop;
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class SomeTest extends TestCase
{
public function testSingleComplete(): void
{
self::assertSame([0 => 42], some([Future::complete(42)], 1));
}
public function testTwoComplete(): void
{
self::assertSame([1, 2], some([Future::complete(1), Future::complete(2)], 2));
}
public function testTwoFirstPending(): void
{
$deferred = new Deferred();
self::assertSame([1 => 2], some([$deferred->getFuture(), Future::complete(2)], 1));
}
public function testTwoFirstThrowing(): void
{
self::assertSame(['two' => 2], some(['one' => Future::error(new \Exception('foo')), 'two' => Future::complete(2)], 1));
}
public function testTwoBothThrowing(): void
{
$this->expectException(CompositeException::class);
$this->expectExceptionMessage('Multiple errors encountered (2); use "Amp\CompositeException::getReasons()" to retrieve the array of exceptions thrown:');
Future\some([Future::error(new \Exception('foo')), Future::error(new \RuntimeException('bar'))], 2);
}
public function testTwoGeneratorThrows(): void
{
self::assertSame([1 => 2], some((static function () {
yield Future::error(new \Exception('foo'));
yield Future::complete(2);
})(), 1));
}
public function testCancellation(): void
{
$this->expectException(CancelledException::class);
$deferreds = \array_map(function (int $value) {
$deferred = new Deferred;
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EventLoop::delay($value / 10, fn () => $deferred->complete($value));
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return $deferred;
}, \range(1, 3));
some(\array_map(
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fn (Deferred $deferred) => $deferred->getFuture(),
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$deferreds
), 3, new TimeoutCancellationToken(0.05));
}
public function testCompleteBeforeCancellation(): void
{
$deferreds = \array_map(function (int $value) {
$deferred = new Deferred;
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EventLoop::delay($value / 10, fn () => $deferred->complete($value));
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return $deferred;
}, \range(1, 3));
self::assertSame(\range(1, 3), some(\array_map(
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fn (Deferred $deferred) => $deferred->getFuture(),
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$deferreds
), 3, new TimeoutCancellationToken(0.5)));
}
public function testZero(): void
{
$this->expectException(\ValueError::class);
$this->expectExceptionMessage('greater than 0');
some([], 0);
}
public function testTooFew(): void
{
$this->expectException(\Error::class);
$this->expectExceptionMessage('required count');
some([Future::complete(1), Future::complete(2)], 3);
}
}