gecko-dev/testing/web-platform/tests/IndexedDB/idbobjectstore_createIndex.htm

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<!DOCTYPE html>
<meta charset="utf-8">
<title>IDBObjectStore.createIndex() - returns an IDBIndex and the properties are set correctly</title>
<link rel="author" title="Microsoft" href="http://www.microsoft.com">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support.js"></script>
<script>
var db,
t = async_test();
var open_rq = createdb(t);
open_rq.onupgradeneeded = function(e) {
db = e.target.result;
var objStore = db.createObjectStore("store");
var index = objStore.createIndex("index", "indexedProperty", { unique: true });
assert_true(index instanceof IDBIndex, "IDBIndex");
assert_equals(index.name, "index", "name");
assert_equals(index.objectStore, objStore, "objectStore");
assert_equals(index.keyPath, "indexedProperty", "keyPath");
assert_true(index.unique, "unique");
assert_false(index.multiEntry, "multiEntry");
t.done();
};
</script>
<div id="log"></div>