<script src="include.js"></script>
<script>
    test(() => {
        // The title is the empty string by default.
        println(`1: "${document.title}"`);

        // When the title is set, and a title element does not exist, one is added to to head element.
        let titleElements = document.getElementsByTagName('title');
        println(`2a: ${titleElements.length}`)

        document.title = 'This is a title!';

        titleElements = document.getElementsByTagName('title');
        println(`2b: ${titleElements.length}`)
        println(`2c: "${titleElements[0].innerText}"`);
        println(`2d: "${document.title}"`);

        // Getting and setting the title's text attribute.
        println(`3a: "${titleElements[0].text}"`);
        println(`3b: "${document.title}"`);

        titleElements[0].text = "Another title!";
        println(`3c: "${titleElements[0].text}"`);
        println(`3d: "${document.title}"`);

        // Removing the title element sets the title back to default.
        titleElements[0].remove();
        println(`4: "${document.title}"`);

        // After adding several title elements to the body, setting the title updates the text
        // content of only the first title element.
        document.body.appendChild(document.createElement('title'));
        document.body.appendChild(document.createElement('title'));
        document.body.appendChild(document.createElement('title'));

        titleElements = document.getElementsByTagName('title');
        println(`5a: ${titleElements.length}`)
        println(`5b: "${titleElements[0].innerText}"`);
        println(`5c: "${titleElements[1].innerText}"`);
        println(`5d: "${titleElements[2].innerText}"`);

        document.title = 'This is another title!';

        titleElements = document.getElementsByTagName('title');
        println(`5e: ${titleElements.length}`)
        println(`5f: "${titleElements[0].innerText}"`);
        println(`5g: "${titleElements[1].innerText}"`);
        println(`5h: "${titleElements[2].innerText}"`);
    });
</script>