getRangeAt.html - mozsearch

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This WPT test may be referenced by the following Test IDs:
- /selection/getRangeAt.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>The getRangeAt method</title>

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

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

<link rel="help" href="https://w3c.github.io/selection-api/#dom-selection-getrangeat">

<body>

<script>

const sel = getSelection();

test(function() {

  var range = document.createRange();

  sel.addRange(range);

  assert_throws_dom("INDEX_SIZE_ERR", function() { sel.getRangeAt(-1); })

  assert_throws_dom("INDEX_SIZE_ERR", function() { sel.getRangeAt(1); })

}, "Only supports index 0");

test(() => {

  sel.removeAllRanges();

  assert_throws_dom("INDEX_SIZE_ERR", () => sel.getRangeAt(0))

}, "Throws when with no range");

test(() => {

  sel.addRange(document.createRange());

  assert_equals(sel.getRangeAt(0), sel.getRangeAt(0));

}, "Returns the same range object when with no selection change");

test(() => {

  const range = sel.getRangeAt(0);

  sel.collapse(document.body);

  assert_not_equals(range, sel.getRangeAt(0));

}, "Returns a different range object when with selection change");

</script>