<?php

namespace Amp\Parallel\Test\Context;

use Amp\Parallel\Context\Context;
use Amp\Parallel\Context\Parallel;

/**
 * @requires extension parallel
 */
class ParallelTest extends AbstractContextTest
{
    public function createContext($script): Context
    {
        return new Parallel($script);
    }

    public function testGetId()
    {
        $context = $this->createContext([
                __DIR__ . "/Fixtures/test-process.php",
                "Test"
            ]);

        yield $context->start();
        $this->assertIsInt($context->getId());
        yield $context->join();

        $context = $this->createContext([
                __DIR__ . "/Fixtures/test-process.php",
                "Test"
            ]);

        $this->expectException(\Error::class);
        $this->expectExceptionMessage('The thread has not been started');

        $context->getId();
    }

    public function testRunStartsThread()
    {
        $thread = yield Parallel::run([
                __DIR__ . "/Fixtures/test-process.php",
                "Test"
            ]);

        $this->assertInstanceOf(Parallel::class, $thread);
        $this->assertTrue($thread->isRunning());
        $this->assertIsInt($thread->getId());

        return yield $thread->join();
    }
}