OpaqueRange-basic.html

Enable keyboard shortcuts

This test has a WPT meta file that expects 3 subtest issues.
This WPT test may be referenced by the following Test IDs:
- /dom/ranges/tentative/OpaqueRange-basic.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<body></body>

<script>

test(() => {

  document.body.innerHTML = '<textarea>Hello</textarea>';

  const textarea = document.body.firstElementChild;

  const range = textarea.getValueRange(0, 5);

  assert_true(range instanceof OpaqueRange, "|range| should be an instance of OpaqueRange.");

  assert_true(range instanceof AbstractRange, "|range| should also be an instance of AbstractRange.");

  assert_false(range instanceof Range, "|range| should not be an instance of Range.");

}, "Tests getValueRange returns OpaqueRange that extends AbstractRange.");

test(() => {

  document.body.innerHTML = '<textarea>Hello</textarea>';

  const textarea = document.body.firstElementChild;

  const range = textarea.getValueRange(1, 4);

  assert_equals(range.startContainer, null, "startContainer should be null.");

  assert_equals(range.endContainer, null, "endContainer should be null.");

  assert_equals(range.startOffset, 1);

  assert_equals(range.endOffset, 4);

  assert_false(range.collapsed);

}, "OpaqueRange handles getValueRange correctly.");

test(() => {

  document.body.innerHTML = '<input type="text" value="">';

  const input = document.body.firstElementChild;

  const range = input.getValueRange(0, 0);

  assert_equals(range.startOffset, 0);

  assert_equals(range.endOffset, 0);

  assert_true(range.collapsed);

}, "OpaqueRange handles empty value correctly.");

</script>