<?php

namespace Nih\CommandBuilder;

use InvalidArgumentException;
use PHPUnit\Framework\Attributes\CoversClass;
use PHPUnit\Framework\TestCase;

#[CoversClass(Stdio::class)]
final class StdioTest extends TestCase
{
    public function testNull(): void
    {
        $null = match (PHP_OS_FAMILY) {
            'Windows' => 'nul',
            default => '/dev/null',
        };

        $this->assertEquals(
            ['file', $null, 'r'],
            Stdio::null()->getDescriptiorSpec(0),
        );

        $this->assertEquals(
            ['file', $null, 'w'],
            Stdio::null()->getDescriptiorSpec(1),
        );

        $this->assertEquals(
            ['file', $null, 'w'],
            Stdio::null()->getDescriptiorSpec(2),
        );
    }

    public function testInherit(): void
    {
        $this->assertEquals(
            STDIN,
            Stdio::inherit()->getDescriptiorSpec(0),
        );

        $this->assertEquals(
            STDOUT,
            Stdio::inherit()->getDescriptiorSpec(1),
        );

        $this->assertEquals(
            STDERR,
            Stdio::inherit()->getDescriptiorSpec(2),
        );
    }

    public function testFile(): void
    {
        $this->assertEquals(
            ['file', '/foo/bar/baz', 'r'],
            Stdio::file('/foo/bar/baz', 'r')->getDescriptiorSpec(0),
        );
    }

    public function testStream(): void
    {
        $this->assertEquals(
            STDOUT,
            Stdio::stream(STDOUT)->getDescriptiorSpec(0),
        );
    }

    public function testThrowsOnInvalidStream(): void
    {
        $handle = fopen('php://memory', 'w');
        $this->assertNotFalse($handle);

        fclose($handle);

        $this->expectException(InvalidArgumentException::class);

        /** @psalm-suppress InvalidArgument */
        Stdio::stream($handle);
    }
}