css/css-syntax/ident-three-code-points.html

<!doctype html>
<script src='/resources/testharness.js'></script>
<script src='/resources/testharnessreport.js'></script>
<title>Testing valid ident based on first three code points</title>

<link rel="author" title="Greg Whitworth" href="gwhit@microsoft.com" />
<link rel="help" href="https://drafts.csswg.org/css-syntax-3/#would-start-an-identifier" />
<style>
    main div {
      background-color:red;
    }

    div[name=one],
    div[name=two] {
        background: green;
    }

    #1 {
      background-color:red;
    }

    #-2 {
      background-color:red;
    }

    #--3 {
      background-color:green;
    }

    #---4 {
      background-color:green;
    }

    #a {
      background-color:green;
    }

    #-b {
      background-color:green;
    }

    #--c {
      background-color:green;
    }

    #---d {
      background-color:green;
    }
</style>
<body>
    <main>
        <div id="1" class="item" name="one">test1</div>
        <div id="-2" class="item" name="two">test2</div>
        <div id="--3" class="item" name="three">test3</div>
        <div id="---4" class="item" name="four">test4</div>

        <div id="a" class="item" name="five">test A</div>
        <div id="-b" class="item" name="six">test B</div>
        <div id="--c" class="item" name="seven">test C</div>
        <div id="---d" class="item" name="eight">test D</div>
    </main>

    <script>
        var items = document.getElementsByClassName('item');

        for(var i=0; i < items.length; i++) {
            test(function() {
                assert_equals(window.getComputedStyle(items[i]).getPropertyValue('background-color'), "rgb(0, 128, 0)");
            }, items[i].getAttribute('name') + " should be green");
        }
    </script>
</body>
</html>