LayoutTests/fast/html/HTMLOptionsCollection-set-property.html

<!DOCTYPE html>
<html>
<body>
<script src="../../resources/js-test.js"></script>
<select id="testSelect">
<option type="text" id="selectedIndex" name="selectedIndex">
<option type="text" id="action" name="action">
<option type="text" id="testOption" name="testOption">
</select>
<script>
description("Tests setting properties on HTMLOptionsCollection");

collection = document.getElementById("testSelect").options;

shouldBe("collection.selectedIndex", "0");
shouldBe("collection.action", "document.getElementById('action')");
shouldBe("collection[0]", "document.getElementById('selectedIndex')");
shouldBe("collection.testOption", "document.getElementById('testOption')");
shouldBeUndefined("collection.foo");

evalAndLog("collection.selectedIndex = 1");
shouldThrowErrorName("collection[0] = 'bar'", "TypeError");
shouldBe("collection.selectedIndex", "1");
let firstOption = document.getElementById('selectedIndex');
evalAndLog("firstOption.id = 'bar'");
evalAndLog("firstOption.name = 'bar'");
shouldBe("collection.selectedIndex", "1");

evalAndLog("collection.action = 'about:blank'");
shouldBe("collection.action", "document.getElementById('action')");
evalAndLog("document.getElementById('action').remove()");
shouldBeUndefined("collection.action");

evalAndLog("collection.testOption = 'test'");
shouldBe("collection.testOption", "document.getElementById('testOption')");
evalAndLog("document.getElementById('testOption').remove()");
shouldBeUndefined("collection.testOption");

evalAndLog("collection.foo = 'test'");
shouldBeEqualToString("collection.foo", "test");

shouldBe("collection[0]", "firstOption");
</script>
</body>
</html>