Test getRangeAt() returning the same object (#29773)
* Test getRangeAt() returning the same object
* add test for different ranges
* add no range test
* syntax update
diff --git a/selection/getRangeAt.html b/selection/getRangeAt.html
index 466bfd5..a84ad46 100644
--- a/selection/getRangeAt.html
+++ b/selection/getRangeAt.html
@@ -1,14 +1,32 @@
<!DOCTYPE html>
<title>The getRangeAt method</title>
-<div id=log></div>
<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 sel = getSelection();
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>
