chromium/third_party/blink/web_tests/fast/forms/calendar-picker/date-picker-select-value-with-keyboard-no-initial-selection.html

<!DOCTYPE html>
<meta name=fuzzy content="maxDifference=0-3; totalPixels=0-1000">
<script src="../../../resources/testharness.js"></script>
<script src="../../../resources/testharnessreport.js"></script>
<script src="../../../resources/testdriver.js"></script>
<script src="../../../resources/testdriver-vendor.js"></script>
<script src="../resources/common.js"></script>
<script src="../resources/picker-common.js"></script>
<script src="../calendar-picker/resources/calendar-picker-common.js"></script>

<input type="date" id="date0" min="5000-02-14">
<input type="date" id="date1" max="2019-02-21">
<input type="date" id="date2">
<input type="date" id="date3" min="2019-03-10" step="3" max="2019-04-10" value="2019-03-20">

<script>
promise_test(() => {
  let dateElement = document.getElementById("date0");
  return openPicker(dateElement)
  .then(() => {
    eventSender.keyDown('Enter');
    assert_equals(internals.pagePopupWindow, null, "Enter key should dismiss popup.");

    // Note: test will need to be updated in the year 5000 :)
    assert_equals(dateElement.value, "5000-02-14", "Date closest to present should be selected if user hits enter without other input");
  });
}, "Date picker: Picker should default to the day closest to min when it comes after the current date");

promise_test(() => {
  let dateElement = document.getElementById("date1");
  return openPicker(dateElement)
  .then(() => {
    eventSender.keyDown('Enter');
    assert_equals(internals.pagePopupWindow, null, "Enter key should dismiss popup.");

    assert_equals(dateElement.value, "2019-02-21", "Date closest to present should be selected if user hits enter without other input");
  });
}, "Date picker: Picker should default to the day closest to max when it comes before the current date");

promise_test(() => {
  let dateElement = document.getElementById("date2");
  return openPicker(dateElement)
  .then(() => {
    eventSender.keyDown('Enter');
    assert_equals(internals.pagePopupWindow, null, "Enter key should dismiss popup.");

    let splitDate = dateElement.value.split('-');
    let actualDateString = new Date(splitDate[0], splitDate[1] - 1, [splitDate[2]]).toDateString();
    let expectedDateString = new Date().toDateString();

    assert_equals(actualDateString, expectedDateString, "Hitting Enter key when no value is selected should select current date");
  });
}, "Date picker: Picker should select current date when starting with no selection");

promise_test(() => {
  let dateElement = document.getElementById("date3");
  return openPicker(dateElement)
  .then(() => {
    eventSender.keyDown('Enter');
    assert_equals(internals.pagePopupWindow, null, "Enter key should dismiss popup.");

    assert_equals(dateElement.value, "2019-03-22", "Valid date closest to starting value should be selected if user hits enter without other input");
  });
}, "Date picker: If the input's initial value is invalid due to step attribute, should select the nearest valid date");

</script>