allowLinkSchemes example

$this->assertSame(
            '<a>Hello world</a>',
            $this->sanitize($config, '<a href="/index.php">Hello world</a>')
        );
    }

    public function testAllowLinksSchemes()
    {
        $config = (new HtmlSanitizerConfig())
            ->allowElement('a', ['href'])
            ->allowLinkSchemes(['https'])
        ;

        $this->assertSame(
            '<a href="https://trusted.com">Hello world</a>',
            $this->sanitize($config, '<a href="https://trusted.com">Hello world</a>')
        );

        $this->assertSame(
            '<a>Hello world</a>',
            $this->sanitize($config, '<a href="mailto:galopintitouan@gmail.com">Hello world</a>')
        );
    }

    public function testSimpleOptions()
    {
        $config = new HtmlSanitizerConfig();
        $this->assertSame(['http', 'https', 'mailto', 'tel'], $config->getAllowedLinkSchemes());
        $this->assertNull($config->getAllowedLinkHosts());
        $this->assertSame(['http', 'https', 'data'], $config->getAllowedMediaSchemes());
        $this->assertNull($config->getAllowedMediaHosts());
        $this->assertFalse($config->getForceHttpsUrls());

        $config = $config->allowLinkSchemes(['http', 'ftp']);
        $this->assertSame(['http', 'ftp'], $config->getAllowedLinkSchemes());

        $config = $config->allowLinkHosts(['symfony.com', 'example.com']);
        $this->assertSame(['symfony.com', 'example.com'], $config->getAllowedLinkHosts());

        $config = $config->allowRelativeLinks();
        $this->assertTrue($config->getAllowRelativeLinks());

        $config = $config->allowMediaSchemes(['https']);
        $this->assertSame(['https'], $config->getAllowedMediaSchemes());