chromium/third_party/blink/web_tests/external/wpt/html/semantics/forms/the-input-element/input-seconds-leading-zeroes.html

<!DOCTYPE HTML>
<meta charset="utf-8">
<html>
 <head>
  <title>HTMLInputElement leading zeroes in seconds/millis</title>
  <script src="/resources/testharness.js"></script>
  <script src="/resources/testharnessreport.js"></script>
 </head>
 <body>
  <h3>input times and datetimes with leading zeroes in seconds/millis</h3>
  <!-- This test ensures that seconds and milliseconds are being
       output with the appropriate field widths when sanitizing
       datetime-locals and times, e.g. that we don't see "12:30:1".
       The spec is not specific about how much precision to use
       in a sanitized time string, but an invalid string would
       fail at .valueAsNumber -->
  <hr>
  <div id="log"></div>

  <input id="inp">
  <script>
    var inp=document.getElementById("inp");
    var cases = [
      ["datetime-local", "2000-01-01T12:30:01",     946729801000],
      ["datetime-local", "2000-01-01T12:30:00.5",   946729800500],
      ["datetime-local", "2000-01-01T12:30:00.04",  946729800040],
      ["datetime-local", "2000-01-01T12:30:00.003", 946729800003],

      ["time", "12:30:01",     45001000],
      ["time", "12:30:00.5",   45000500],
      ["time", "12:30:00.04",  45000040],
      ["time", "12:30:00.003", 45000003],
    ];

    for (var i in cases) {
      var c = cases[i];
      test(function() {
        inp.setAttribute("type", c[0]);
        inp.value = c[1];
        assert_equals(inp.valueAsNumber, c[2]);
      },"Expected valueAsNumber=" +c[2] + " from " + c[1]);
      if (c[0] == "datetime-local") {
        test(function() {
          inp.setAttribute("type", c[0]);
          inp.value = c[1];
          assert_in_array(inp.value, [c[1], c[1].replace("T", " ")]);
        },"Expected digits unchanged in round-trip of " + c[1])
      }
    }
  </script>
 </body>
</html>