createXmlEncoderWithDateTimeNormalizer example

XML;
        $document = new \DOMDocument();

        $actualXml = $this->encoder->encode(['foo' => $document->createTextNode('bar'), 'bar' => $document->createTextNode('foo & bar')], 'xml');

        $this->assertEquals($expectedXml, $actualXml);
    }

    public function testEncodeXmlWithDateTimeObjectValue()
    {
        $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();

        $actualXml = $xmlEncoder->encode(['dateTime' => new \DateTimeImmutable($this->exampleDateTimeString)], 'xml');

        $this->assertEquals($this->createXmlWithDateTime(), $actualXml);
    }

    public function testEncodeXmlWithDateTimeObjectField()
    {
        $xmlEncoder = $this->createXmlEncoderWithDateTimeNormalizer();

        $actualXml = $xmlEncoder->encode(['foo' => ['@dateTime' => new \DateTimeImmutable($this->exampleDateTimeString)]], 'xml');