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<!DOCTYPE html>
<title>HTMLselectElement Test: value and selectedOption</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<select id="select0"></select>
<select id="select1">
<option>one</option>
<option>two</option>
<div>I'm a div with no part attr</div>
<option id="select1-option3">three</option>
<option>four</option>
</select>
<select id="select2">
<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>
</select>
<select id="select3">
<div>I'm a div with no part attr</div>
<option id="select3-child1">one</option>
<option id="select3-child2">two</option>
<option id="select3-child3">three</option>
</select>
<select id="select4">
<button>
<selectedcontent id="select4-custom-selected-value">Default custom selected-value text</selectedcontent>
</button>
<option id="select4-option1">one</option>
<option id="select4-option2">two</option>
</select>
<select id="select5">
<button>
<selectedcontent id="select5-custom-selected-value">Default custom selected-value text</selectedcontent>
</button>
<div>
<option id="select5-option1">one</option>
<option id="select5-option2">two</option>
</div>
</select>
<select id="select6">
<option id="select6-option1">one</option>
<option id="select6-option2" selected>two</option>
<option id="select6-option3">three</option>
</select>
<select id="select7">
<option id="select7-option1">one</option>
<option id="select7-option2" selected value="test">two</option>
<option>three</option>
</select>
<style>
select, ::picker(select) {
appearance: base-select;
}
</style>
<script>
test(() => {
const select0 = document.getElementById("select0");
assert_equals(select0.value, "");
assert_equals(select0.selectedOptions.length, 0);
select0.value = "something";
assert_equals(select0.value, "", "If there is no matching option, select should be cleared");
assert_equals(select0.selectedOptions.length, 0);
}, "Test that HTMLselect with no options has empty string for value and null for selectedOption");
test(() => {
const select1 = document.getElementById("select1");
assert_equals(select1.value, "one", "value should start with the text of the first option part");
select1.value = "three";
assert_equals(select1.value, "three", "value can be set to the text of an option part");
assert_equals(select1.selectedOptions[0], document.getElementById("select1-option3"));
select1.value = "I'm a div with no part attr";
assert_equals(select1.value, "", "If there is no matching option select should be cleared");
assert_equals(select1.selectedOptions.length, 0);
}, "Test value and selectedOption with HTMLOptionElement element option parts");
test(() => {
const select1 = document.getElementById("select1");
select1.value = "one";
assert_equals(select1.value, "one");
select1.value = null;
assert_equals(select1.value, "");
assert_equals(select1.selectedOptions.length, 0);
}, "Test value and selectedOption when value is null");
test(() => {
const select1 = document.getElementById("select1");
select1.value = "one";
assert_equals(select1.value, "one");
select1.value = undefined;
assert_equals(select1.value, "");
assert_equals(select1.selectedOptions.length, 0);
}, "Test value and selectedOption when value is undefined");
test(() => {
const select2 = document.getElementById("select2");
assert_equals(select2.value, "", "Non-HTMLOptionElements shouldn't be treated as option parts");
assert_equals(select2.selectedOptions.length, 0);
select2.value = "three";
assert_equals(select2.value, "", "value can't be set when there are no option parts'");
assert_equals(select2.selectedOptions.length, 0);
}, "Test value with non-HTMLOptionElement elements labeled as parts");
test(() => {
const select3 = document.getElementById("select3");
assert_equals(select3.value, "one", "value should start with the text of the first option part");
assert_equals(select3.selectedOptions[0], document.getElementById("select3-child1"));
document.getElementById("select3-child3").remove();
assert_equals(select3.value, "one", "Removing a non-selected option should not change the value");
assert_equals(select3.selectedOptions[0], document.getElementById("select3-child1"));
document.getElementById("select3-child1").remove();
assert_equals(select3.value, "two", "When the selected option is removed, the new first option should become selected");
assert_equals(select3.selectedOptions[0], document.getElementById("select3-child2"));
document.getElementById("select3-child2").remove();
assert_equals(select3.value, "", "When all options are removed, value should be the empty string");
assert_equals(select3.selectedOptions.length, 0);
}, "Test that value and selectedOption are updated when options are removed");
test(() => {
const select4 = document.getElementById("select4");
let customSelectedValuePart = document.getElementById("select4-custom-selected-value");
assert_equals(select4.value, "one", "value should start with the text of the first option part");
assert_equals(select4.selectedOptions[0], document.getElementById("select4-option1"));
assert_equals(customSelectedValuePart.innerText, "one", "Custom selected value part should be set to initial value of select");
select4.value = "two";
assert_equals(customSelectedValuePart.innerText, "two", "Custom selected value part should be updated when value of select changes");
assert_equals(select4.selectedOptions[0], document.getElementById("select4-option2"));
}, "Test that slotted-in selected-value part is updated to value of select");
test(() => {
const select5 = document.getElementById("select5");
let customSelectedValuePart = document.getElementById("select5-custom-selected-value");
assert_equals(select5.value, "one", "value should start with the text of the first option part");
assert_equals(select5.selectedOptions[0], document.getElementById("select5-option1"));
assert_equals(customSelectedValuePart.innerText, "one", "Custom selected value part should be set to initial value of select");
select5.value = "two";
assert_equals(customSelectedValuePart.innerText, "two", "Custom selected value part should be updated when value of select changes");
assert_equals(select5.selectedOptions[0], document.getElementById("select5-option2"));
}, "Test that option parts in a slotted-in listbox are reflected in the value property");
test(() => {
let select = document.createElement('select');
assert_equals(select.value, "");
let option = document.createElement('option');
option.innerText = "one";
select.appendChild(option);
assert_equals(select.value, "one");
assert_equals(select.selectedOptions[0], option);
let newOption = document.createElement('option');
newOption.innerText = 'two';
select.appendChild(newOption);
select.value = "two";
assert_equals(select.value, "two");
assert_equals(select.selectedOptions[0], newOption);
select.value = "one";
assert_equals(select.value, "one");
assert_equals(select.selectedOptions[0], option);
}, "Test that value and selectedOption are correctly updated");
test(() => {
const select = document.getElementById("select6");
let selectOption1 = document.getElementById("select6-option1");
assert_equals(select.value, "two");
assert_equals(select.selectedOptions[0], document.getElementById("select6-option2"));
assert_false(selectOption1.selected);
selectOption1.selected = true;
assert_equals(select.value, "one");
assert_equals(select.selectedOptions[0], selectOption1);
let newOption = document.createElement("option");
newOption.innerText = "four";
newOption.selected = true;
select.appendChild(newOption);
assert_equals(select.value, "four");
assert_equals(select.selectedOptions[0], newOption);
assert_false(selectOption1.selected);
select.value = "three";
assert_equals(select.selectedOptions[0], document.getElementById("select6-option3"));
assert_false(newOption.selected);
}, "Test that HTMLOption.selected updates select.value and select.selectedOptions");
test(() => {
const select = document.getElementById("select7");
let selectOption1 = document.getElementById("select7-option1");
assert_equals(select.value, "test");
assert_equals(select.selectedOptions[0], document.getElementById("select7-option2"));
assert_false(selectOption1.selected);
selectOption1.selected = true;
assert_equals(select.value, "one");
assert_equals(select.selectedOptions[0], selectOption1);
selectOption1.value = "new test";
assert_equals(select.value, "new test");
assert_equals(select.selectedOptions[0], selectOption1);
selectOption1.removeAttribute("value");
assert_equals(select.value, "one");
assert_equals(select.selectedOptions[0], selectOption1);
selectOption1.value = "";
assert_equals(select.value, "");
assert_equals(select.selectedOptions[0], selectOption1);
}, "Test that HTMLOption.value updates select.value");
</script>
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