Selection-addRange-same-instance.html

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This WPT test may be referenced by the following Test IDs:
- /selection/Selection-addRange-same-instance.html - WPT Dashboard Interop Dashboard

<!doctype html>

<html>

<head>

<meta charset="utf-8">

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

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

<script>

"use strict";

promise_test(async () => {

  await new Promise(resolve => document.addEventListener("DOMContentLoaded", resolve));

  getSelection().removeAllRanges();

  const range = document.createRange();

  range.setStart(document.querySelector("span"), 0);

  getSelection().addRange(range);

  getSelection().addRange(range);

  assert_equals(getSelection().rangeCount, 1, "Adding same collapsed range twice should not clone the range");

  assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");

  assert_equals(getSelection().focusNode, document.querySelector("span"), "Focus node should be the <span>");

  assert_equals(getSelection().focusOffset, 0, "Focus offset should be 0");

  assert_true(getSelection().isCollapsed, "Selection should be collapsed");

}, "Adding same collapsed range should not change selections");

promise_test(async () => {

  getSelection().removeAllRanges();

  const range = document.createRange();

  range.selectNodeContents(document.querySelector("div"));

  getSelection().addRange(range);

  getSelection().addRange(range);

  assert_equals(getSelection().rangeCount, 1, "Adding same range twice should not clone the range");

  assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");

  assert_equals(getSelection().anchorNode, document.querySelector("div"), "Anchor node should be the <div>");

  assert_equals(getSelection().anchorOffset, 0, "Anchor offset should be 0");

  assert_equals(getSelection().focusNode, document.querySelector("div"), "Focus node should be the <div>");

  assert_equals(getSelection().focusOffset, 1, "Focus offset should be 1");

}, "Adding non-collapsed range after updating the range should not change selections");

promise_test(async () => {

  getSelection().removeAllRanges();

  const range = document.createRange();

  range.collapse(document.querySelector("span"), 0);

  getSelection().addRange(range);

  range.selectNodeContents(document.querySelector("div"));

  getSelection().addRange(range);

  assert_equals(getSelection().rangeCount, 1, "Adding same range twice should not clone the range");

  assert_equals(getSelection().getRangeAt(0), range, "The first range should be the added range");

  assert_equals(getSelection().anchorNode, document.querySelector("div"), "Anchor node should be the <div>");

  assert_equals(getSelection().anchorOffset, 0, "Anchor offset should be 0");

  assert_equals(getSelection().focusNode, document.querySelector("div"), "Focus node should be the <div>");

  assert_equals(getSelection().focusOffset, 1, "Focus offset should be 1");

}, "Adding same collapsed range after updating the range should not change selections");

</script>

</head>

<body><div><span></span></div></body>

</html>