endtoend-test-psl/tests/Psl/Json/EncodeTest.php

<?php

declare(strict_types=1);

namespace Psl\Json;

use PHPUnit\Framework\TestCase;
use Psl\Json;
use Psl\Math;

class EncodeTest extends TestCase
{
    public function testEncode(): void
    {
        $actual = Json\encode(['a']);

        self::assertSame('["a"]', $actual);
    }

    public function testPrettyEncode(): void
    {
        $actual = Json\encode([
            'name' => 'azjezz/psl',
            'type' => 'library',
            'description' => 'PHP Standard Library.',
            'keywords' => ['php', 'std', 'stdlib', 'utility', 'psl'],
            'license' => 'MIT'
        ], true);

        $json = <<<JSON
{
    "name": "azjezz/psl",
    "type": "library",
    "description": "PHP Standard Library.",
    "keywords": [
        "php",
        "std",
        "stdlib",
        "utility",
        "psl"
    ],
    "license": "MIT"
}
JSON;

        self::assertSame($json, $actual);
    }

    public function testEncodeThrowsForMalformedUTF8(): void
    {
        $this->expectException(Json\Exception\JsonEncodeException::class);
        $this->expectExceptionMessage('Malformed UTF-8 characters, possibly incorrectly encoded.');

        Json\encode(["bad utf\xFF"]);
    }

    public function testEncodeThrowsWithNAN(): void
    {
        $this->expectException(Json\Exception\JsonEncodeException::class);
        $this->expectExceptionMessage('Inf and NaN cannot be JSON encoded.');

        Json\encode(Math\NaN);
    }

    public function testEncodeThrowsWithInf(): void
    {
        $this->expectException(Json\Exception\JsonEncodeException::class);
        $this->expectExceptionMessage('Inf and NaN cannot be JSON encoded.');

        Json\encode(Math\INFINITY);
    }

    public function testEncodePreserveZeroFraction(): void
    {
        self::assertSame('1.0', Json\encode(1.0));
    }
}