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<!DOCTYPE html>
<title>HTMLSelectListElement Test: value and selectedOption</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<selectlist id="selectList0"></selectlist>
<selectlist id="selectList1">
<option>one</option>
<option>two</option>
<div>I'm a div with no part attr</div>
<option id="selectList1-option3">three</option>
<option>four</option>
</selectlist>
<selectlist id="selectList2">
<div behavior="option">one</div>
<div behavior="option">two</div>
<div>I'm a div with no part attr</div>
<div behavior="option">three</div>
<div behavior="option">four</div>
</selectlist>
<selectlist id="selectList3">
<div>I'm a div with no part attr</div>
<option id="selectList3-child1">one</option>
<option id="selectList3-child2">two</option>
<option id="selectList3-child3">three</option>
</selectlist>
<selectlist id="selectList4">
<div slot="button" behavior="button">
<div behavior="selected-value" id="selectList4-custom-selected-value">Default custom selected-value text</div>
</div>
<option id="selectList4-option1">one</option>
<option id="selectList4-option2">two</option>
</selectlist>
<selectlist id="selectList5">
<div slot="button" behavior="button">
<div behavior="selected-value" id="selectList5-custom-selected-value">Default custom selected-value text</div>
</div>
<div popover slot="listbox" behavior="listbox">
<option id="selectList5-option1">one</option>
<option id="selectList5-option2">two</option>
</div>
</selectlist>
<selectlist id="selectList6">
<option id="selectList6-option1">one</option>
<option id="selectList6-option2" selected>two</option>
<option id="selectList6-option3">three</option>
</selectlist>
<selectlist id="selectList7">
<option id="selectList7-option1">one</option>
<option id="selectList7-option2" selected value="test">two</option>
<option>three</option>
</selectlist>
<script>
test(() => {
const selectList0 = document.getElementById("selectList0");
assert_equals(selectList0.value, "");
assert_equals(selectList0.selectedOption, null);
selectList0.value = "something";
assert_equals(selectList0.value, "", "If there is no matching option, selectlist should be cleared");
assert_equals(selectList0.selectedOption, null);
}, "Test that HTMLSelectList with no options has empty string for value and null for selectedOption");
test(() => {
const selectList1 = document.getElementById("selectList1");
assert_equals(selectList1.value, "one", "value should start with the text of the first option part");
selectList1.value = "three";
assert_equals(selectList1.value, "three", "value can be set to the text of an option part");
assert_equals(selectList1.selectedOption, document.getElementById("selectList1-option3"));
selectList1.value = "I'm a div with no part attr";
assert_equals(selectList1.value, "", "If there is no matching option selectlist should be cleared");
assert_equals(selectList1.selectedOption, null);
}, "Test value and selectedOption with HTMLOptionElement element option parts");
test(() => {
const selectList1 = document.getElementById("selectList1");
selectList1.value = "one";
assert_equals(selectList1.value, "one");
selectList1.value = null;
assert_equals(selectList1.value, "");
assert_equals(selectList1.selectedOption, null);
}, "Test value and selectedOption when value is null");
test(() => {
const selectList1 = document.getElementById("selectList1");
selectList1.value = "one";
assert_equals(selectList1.value, "one");
selectList1.value = undefined;
assert_equals(selectList1.value, "");
assert_equals(selectList1.selectedOption, null);
}, "Test value and selectedOption when value is undefined");
test(() => {
const selectList2 = document.getElementById("selectList2");
assert_equals(selectList2.value, "", "Non-HTMLOptionElements shouldn't be treated as option parts");
assert_equals(selectList2.selectedOption, null);
selectList2.value = "three";
assert_equals(selectList2.value, "", "value can't be set when there are no option parts'");
assert_equals(selectList2.selectedOption, null);
}, "Test value with non-HTMLOptionElement elements labeled as parts");
test(() => {
const selectList3 = document.getElementById("selectList3");
assert_equals(selectList3.value, "one", "value should start with the text of the first option part");
assert_equals(selectList3.selectedOption, document.getElementById("selectList3-child1"));
document.getElementById("selectList3-child3").remove();
assert_equals(selectList3.value, "one", "Removing a non-selected option should not change the value");
assert_equals(selectList3.selectedOption, document.getElementById("selectList3-child1"));
document.getElementById("selectList3-child1").remove();
assert_equals(selectList3.value, "two", "When the selected option is removed, the new first option should become selected");
assert_equals(selectList3.selectedOption, document.getElementById("selectList3-child2"));
document.getElementById("selectList3-child2").remove();
assert_equals(selectList3.value, "", "When all options are removed, value should be the empty string");
assert_equals(selectList3.selectedOption, null);
}, "Test that value and selectedOption are updated when options are removed");
test(() => {
const selectList4 = document.getElementById("selectList4");
let customSelectedValuePart = document.getElementById("selectList4-custom-selected-value");
assert_equals(selectList4.value, "one", "value should start with the text of the first option part");
assert_equals(selectList4.selectedOption, document.getElementById("selectList4-option1"));
assert_equals(customSelectedValuePart.innerText, "one", "Custom selected value part should be set to initial value of selectlist");
selectList4.value = "two";
assert_equals(customSelectedValuePart.innerText, "two", "Custom selected value part should be updated when value of selectlist changes");
assert_equals(selectList4.selectedOption, document.getElementById("selectList4-option2"));
}, "Test that slotted-in selected-value part is updated to value of selectlist");
test(() => {
const selectList5 = document.getElementById("selectList5");
let customSelectedValuePart = document.getElementById("selectList5-custom-selected-value");
assert_equals(selectList5.value, "one", "value should start with the text of the first option part");
assert_equals(selectList5.selectedOption, document.getElementById("selectList5-option1"));
assert_equals(customSelectedValuePart.innerText, "one", "Custom selected value part should be set to initial value of selectlist");
selectList5.value = "two";
assert_equals(customSelectedValuePart.innerText, "two", "Custom selected value part should be updated when value of selectlist changes");
assert_equals(selectList5.selectedOption, document.getElementById("selectList5-option2"));
}, "Test that option parts in a slotted-in listbox are reflected in the value property");
test(() => {
let selectList = document.createElement('selectlist');
assert_equals(selectList.value, "");
let option = document.createElement('option');
option.innerText = "one";
selectList.appendChild(option);
assert_equals(selectList.value, "one");
assert_equals(selectList.selectedOption, option);
let newOption = document.createElement('option');
newOption.innerText = 'two';
selectList.appendChild(newOption);
selectList.value = "two";
assert_equals(selectList.value, "two");
assert_equals(selectList.selectedOption, newOption);
option.click();
assert_equals(selectList.value, "one");
assert_equals(selectList.selectedOption, option);
}, "Test that value and selectedOption are correctly updated");
test(() => {
const selectList = document.getElementById("selectList6");
let selectListOption1 = document.getElementById("selectList6-option1");
assert_equals(selectList.value, "two");
assert_equals(selectList.selectedOption, document.getElementById("selectList6-option2"));
assert_false(selectListOption1.selected);
selectListOption1.selected = true;
assert_equals(selectList.value, "one");
assert_equals(selectList.selectedOption, selectListOption1);
let newOption = document.createElement("option");
newOption.innerText = "four";
newOption.selected = true;
selectList.appendChild(newOption);
assert_equals(selectList.value, "four");
assert_equals(selectList.selectedOption, newOption);
assert_false(selectListOption1.selected);
selectList.value = "three";
assert_equals(selectList.selectedOption, document.getElementById("selectList6-option3"));
assert_false(newOption.selected);
}, "Test that HTMLOption.selected updates selectlist.value and selectlist.selectedOption");
test(() => {
const selectList = document.getElementById("selectList7");
let selectListOption1 = document.getElementById("selectList7-option1");
assert_equals(selectList.value, "test");
assert_equals(selectList.selectedOption, document.getElementById("selectList7-option2"));
assert_false(selectListOption1.selected);
selectListOption1.selected = true;
assert_equals(selectList.value, "one");
assert_equals(selectList.selectedOption, selectListOption1);
selectListOption1.value = "new test";
assert_equals(selectList.value, "new test");
assert_equals(selectList.selectedOption, selectListOption1);
selectListOption1.removeAttribute("value");
assert_equals(selectList.value, "one");
assert_equals(selectList.selectedOption, selectListOption1);
selectListOption1.value = "";
assert_equals(selectList.value, "");
assert_equals(selectList.selectedOption, selectListOption1);
}, "Test that HTMLOption.value updates selectlist.value");
</script>
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