<?php declare(strict_types = 1);

namespace MailPoet\Validator;

use MailPoetUnitTest;

class SchemaTest extends MailPoetUnitTest {
  public function testPlain(): void {
    $schema = $this->getTestingSchema();
    $this->assertSame(['type' => 'test'], $schema->toArray());
    $this->assertSame('{"type":"test"}', $schema->toString());
  }

  public function testNullable(): void {
    $schema = $this->getTestingSchema()->nullable();
    $this->assertSame(['type' => ['test', 'null']], $schema->toArray());
    $this->assertSame('{"type":["test","null"]}', $schema->toString());
  }

  public function testNonNullable(): void {
    $schema = $this->getTestingSchema()->nullable()->nonNullable();
    $this->assertSame(['type' => 'test'], $schema->toArray());
    $this->assertSame('{"type":"test"}', $schema->toString());
  }

  public function testRequired(): void {
    $schema = $this->getTestingSchema()->required();
    $this->assertSame(['type' => 'test', 'required' => true], $schema->toArray());
    $this->assertSame('{"type":"test","required":true}', $schema->toString());
  }

  public function testOptional(): void {
    $schema = $this->getTestingSchema()->required()->optional();
    $this->assertSame(['type' => 'test'], $schema->toArray());
    $this->assertSame('{"type":"test"}', $schema->toString());
  }

  public function testMixedProperties(): void {
    $schema = $this->getTestingSchema()
      ->required()
      ->nullable();

    $this->assertSame([
      'type' => ['test', 'null'],
      'required' => true,
    ], $schema->toArray());

    $this->assertSame(
      '{"type":["test","null"],"required":true}',
      $schema->toString()
    );
  }

  public function testImmutability(): void {
    $schema = $this->getTestingSchema();
    $this->assertNotSame($schema->nullable(), $schema);
    $this->assertNotSame($schema->nonNullable(), $schema);
    $this->assertNotSame($schema->required(), $schema);
    $this->assertNotSame($schema->optional(), $schema);
  }

  private function getTestingSchema(): Schema {
    return new class extends Schema {
      protected $schema = ['type' => 'test'];
    };
  }
}