mozilla-central/testing/web-platform/tests/touch-events/single-touch.html

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<!DOCTYPE HTML>
<html>
<!--
Test cases for Touch Events v1 Recommendation
These tests are based on Matt Bruebeck's single-touch tests.
There are NO multi-touch tests in this document.
This document references Test Assertions (abbrev TA below) written by Cathy Chan
-->
<head>
<title>Touch Events Single Touch Tests</title>
<meta name="viewport" content="width=device-width">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/testdriver.js"></script>
<script src="/resources/testdriver-actions.js"></script>
<script src="/resources/testdriver-vendor.js"></script>
<script>
// Check a Touch object's attributes for existence and correct type
// TA: 1.1.2, 1.1.3
function check_Touch_object (t, element) {
test(function() {
assert_equals(Object.prototype.toString.call(t), "[object Touch]",
`${name} attribute of type TouchList`);
}, `${element}'s touch point is a Touch object`);
[
["long", "identifier"],
["EventTarget", "target"],
["long", "screenX"],
["long", "screenY"],
["long", "clientX"],
["long", "clientY"],
["long", "pageX"],
["long", "pageY"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
test(function() {
assert_true(name in t, `${name} attribute in Touch object`);
}, `${element}.Touch.${name} attribute exists check_Touch_object`);
// type check
switch(type) {
case "long":
test(function() {
assert_equals(typeof t[name], "number",
`${name} attribute of type long`);
}, `${element}.Touch.${name} attribute is of type number (long)`);
break;
case "EventTarget":
// An event target is some type of Element
test(function() {
assert_true(t[name] instanceof Element,
"EventTarget must be an Element.");
}, `${element}.Touch.${name} attribute is of type Element`);
break;
default:
break;
}
});
}
// Check a TouchList object's attributes and methods for existence and
// proper type.
// Also make sure all of the members of the list are Touch objects
// TA: 1.2.1, 1.2.2, 1.2.5
function check_TouchList_object (tl, element) {
const context = "check_touchList_object";
const ulong = "number (unsigned long)";
test(function() {
assert_equals(Object.prototype.toString.call(tl),
"[object TouchList]",
`${name} attribute of type TouchList`);
}, `${element}'s touch list is a TouchList object`);
[
["unsigned long", "length"],
["function", "item"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
test(function() {
assert_true(name in tl, `${name} attribute in TouchList`);
}, `${element}.TouchList.${name} attribute exists ${context}`);
// type check
switch(type) {
case "unsigned long":
test(function() {
assert_equals(typeof tl[name], "number",
`${name} attribute of type long`);
}, `${element}.TouchList.${name} attribute is of type ${ulong}`);
break;
case "function":
test(function() {
assert_equals(typeof tl[name], "function",
`${name} attribute of type function`);
}, `${element}.TouchList.${name} attribute is of type function`);
break;
default:
break;
}
});
// Each member of tl should be a proper Touch object
for (var i=0; i < tl.length; i++) {
check_Touch_object(tl.item(i), `${element}[${i}]`);
}
}
// Check a TouchEvent event's attributes for existence and proper type
// Also check that each of the event's TouchList objects are valid
// TA: 1.{3,4,5}.1.1, 1.{3,4,5}.1.2
function check_TouchEvent(ev) {
test(function() {
assert_true(ev instanceof TouchEvent, "event is a TouchEvent event");
}, `${ev.type} event is a TouchEvent event`);
[
["TouchList", "touches"],
["TouchList", "targetTouches"],
["TouchList", "changedTouches"],
["boolean", "altKey"],
["boolean", "metaKey"],
["boolean", "ctrlKey"],
["boolean", "shiftKey"],
].forEach(function(attr) {
var type = attr[0];
var name = attr[1];
// existence check
test(function() {
assert_true(name in ev,
`${name} attribute in ${ev.type} event`);
}, `${ev.type}.${name} attribute exists check_TouchEvent`);
// type check
switch(type) {
case "boolean":
test(function() {
assert_equals(
typeof ev[name], "boolean",
`${name} attribute of type boolean`);
}, `${ev.type}.${name} attribute is of type boolean`);
break;
case "TouchList":
test(function() {
assert_equals(
Object.prototype.toString.call(ev[name]),
"[object TouchList]",
`${name} attribute of type TouchList`);
}, `${ev.type}.${name} attribute is of type TouchList`);
// Now check the validity of the TouchList
check_TouchList_object(ev[name], `${ev.type}.${name}`);
break;
default:
break;
}
});
}
function is_touch_over_element(touch, element) {
var bounds = element.getBoundingClientRect();
return touch.pageX >= bounds.left && touch.pageX <= bounds.right &&
touch.pageY >= bounds.top && touch.pageY <= bounds.bottom;
}
function check_touch_clientXY(touch) {
assert_equals(touch.clientX, touch.pageX - window.pageXOffset,
"touch.clientX is touch.pageX - window.pageXOffset.");
assert_equals(touch.clientY, touch.pageY - window.pageYOffset,
"touch.clientY is touch.pageY - window.pageYOffset.");
}
function check_screenXY_clientXY_pageXY(touch) {
assert_greater_than_equal(touch.screenX, 0,
"touch.screenX is no less than 0");
assert_greater_than_equal(touch.screenY, 0,
"touch.screenY is no less than 0");
assert_greater_than_equal(touch.clientX, 0,
"touch.clientX is no less than 0");
assert_greater_than_equal(touch.clientY, 0,
"touch.clientY is no less than 0");
assert_greater_than_equal(touch.pageX, 0,
"touch.pageX is no less than 0");
assert_greater_than_equal(touch.pageY, 0,
"touch.pageY is no less than 0");
}
function validateTouchstart(ev) {
check_TouchEvent(ev);
// TA: 1.3.2.1, 1.3.3.1, 1.3.4.1
test(function() {
assert_equals(ev.touches.length, 1, "One touch point.");
assert_equals(ev.changedTouches.length, 1,
"One changed touch point.");
assert_equals(ev.targetTouches.length, 1, "One target touch point.");
}, "touchstart: all TouchList lengths are correct");
var t = ev.touches[0];
var ct = ev.changedTouches[0];
var tt = ev.targetTouches[0];
touchstart_identifier = t.identifier;
// TA: 1.3.3.3, 1.3.2.3, 1.3.3.4 (indirect (transitive))
test(function() {
assert_equals(ct.identifier, touchstart_identifier,
"changedTouches identifier matches.");
assert_equals(tt.identifier, touchstart_identifier,
"targetTouches identifier matches.");
}, "touchstart: all TouchList identifiers are consistent");
// TA: 1.3.3.9
test(function() {
assert_equals(tt.target, ev.target,
"event target same as targetTouches target.");
}, "touchstart: event target same as targetTouches target");
test(function() {
assert_true(is_touch_over_element(t, target0),
"touch.pageX/pageY is over target0.");
}, "touchstart: touch pageX/pageY inside of target element");
test(function() {
check_touch_clientXY(t);
}, "touchstart: touch clientX/clientY is consistent with pageX/pageY");
test(function() {
check_screenXY_clientXY_pageXY(t);
}, "touchstart: touch screenX/screenY pageX/pageY and " +
"clientX/clientY values are no less than 0");
}
function validateTouchmove(ev) {
check_TouchEvent(ev);
// TA: 1.4.2.1, 1.4.3.1
test(function() {
assert_equals(ev.touches.length, 1, "One touch point.");
assert_equals(ev.changedTouches.length, 1, "One changed touch point.");
assert_equals(ev.targetTouches.length, 1, "One target touch point.");
}, "touchmove: all TouchList lengths are correct");
// 1.4.2.3, 1.4.3.3, 1.4.3.5, 1.4.4.3
test(function() {
assert_equals(ev.touches[0].identifier, touchstart_identifier,
"Touch identifier matches.");
assert_equals(ev.changedTouches[0].identifier, touchstart_identifier,
"Changed touch identifier matches.");
assert_equals(ev.targetTouches[0].identifier, touchstart_identifier,
"Target touch identifier matches.");
}, "touchmove: all TouchList identifiers matches touchstart identifier");
// TA: 1.4.3.8
var tt = ev.targetTouches[0];
test(function() {
assert_equals(tt.target, ev.target,
"event target same as targetTouches target.");
}, "touchmove: event target same as targetTouches target");
test(function() {
assert_true(is_touch_over_element(tt, target0) ||
is_touch_over_element(tt, target1),
"touch.pageX/pageY is over one of the targets.");
}, "touchmove: touch pageX/pageY inside of one of the target elements");
test(function() {
check_touch_clientXY(tt);
}, "touchmove: touch clientX/clientY is consistent with pageX/pageY");
test(function() {
check_screenXY_clientXY_pageXY(tt);
}, "touchmove: touch screenX/screenY pageX/pageY and clientX/clientY " +
"values are no less than 0");
}
function validateTouchend(ev) {
check_TouchEvent(ev);
// TA: 1.5.1.2, 1.5.3.1, 1.5.4.1
test(function() {
assert_equals(ev.touches.length, 0, "Zero touch points.");
assert_equals(ev.changedTouches.length, 1, "One changed touch point.");
assert_equals(ev.targetTouches.length, 0, "Zero target touch points.");
}, "touchend: all TouchList lengths are correct");
var t = ev.changedTouches[0];
// TA: 1.5.2.6, 1.5.2.3
test(function() {
assert_equals(t.identifier, touchstart_identifier,
"changedTouches identifier matches.");
}, "touchend: touches identifier matches changedTouches identifier");
test(function() {
assert_true(is_touch_over_element(t, target1),
"touch.pageX/pageY is over target1.");
}, "touchend: touch pageX/pageY inside expected element");
test(function() {
check_touch_clientXY(t);
}, "touchend: touch clientX/clientY is consistent with pageX/pageY");
test(function() {
check_screenXY_clientXY_pageXY(t);
}, "touchend: touch screenX/screenY pageX/pageY and clientX/clientY " +
"values are no less than 0");
}
function createEventPromise(eventType) {
const target0 = document.getElementById("target0");
const doneButton = document.getElementById('done');
return new Promise((resolve, reject) => {
doneButton.addEventListener('click', reject, { once: true });
target0.addEventListener(eventType, event => {
doneButton.removeEventListener('click', reject);
resolve(event);
}, { once: true });
});
}
async function run() {
const target0 = document.getElementById("target0");
const target1 = document.getElementById("target1");
const doneButton = document.getElementById('done');
promise_test(async t => {
const events = [];
const recordTouchEvents = (target) => {
const listener = event => {
events.push(`${target.id}:${event.type}`);
};
target.addEventListener('touchstart', listener);
target.addEventListener('touchmove', listener);
target.addEventListener('touchend', listener);
};
recordTouchEvents(target0);
recordTouchEvents(target1);
const touchstartPromise = createEventPromise('touchstart');
const touchmovePromise = createEventPromise('touchmove');
const touchendPromise = createEventPromise('touchend');
await new test_driver.Actions()
.addPointer("touchPointer1", "touch")
.pointerMove(0, 0, {origin: target0, sourceName: "touchPointer1"})
.pointerDown({sourceName: "touchPointer1"})
.pointerMove(0, 10, {origin: target0, sourceName: "touchPointer1"})
.pointerMove(0, 0, {origin: target1, sourceName: "touchPointer1"})
.pointerUp({sourceName: "touchPointer1"})
.send();
// Signal test completion. Any events not processed by the time the
// button is clicked will not be received. This safeguards against a
// timeout on platforms lacking support for touch events.
await new test_driver.Actions()
.pointerMove(0, 0, {origin: doneButton})
.pointerDown()
.pointerUp()
.send();
try {
const touchstartEvent = await touchstartPromise;
validateTouchstart(touchstartEvent);
} catch (e) {
assert_unreached('touchstart event not received');
}
try {
const touchmoveEvent = await touchmovePromise;
validateTouchmove(touchmoveEvent);
} catch (e) {
assert_unreached('touchmove event not received');
}
try {
const touchendEvent = await touchendPromise;
validateTouchend(touchendEvent);
} catch (e) {
assert_unreached('touchend event not received');
}
// Check event ordering TA: 1.6.2
assert_array_equals(
events,
["target0:touchstart", "target0:touchmove", "target0:touchend"],
"unexpected event ordering");
}, 'Verify touch events for a single touch drag operation');
}
</script>
<style>
* {
touch-action: none;
}
div {
margin: 0em;
padding: 2em;
}
#target0 {
background: yellow;
border: 1px solid orange;
}
#target1 {
background: lightblue;
border: 1px solid blue;
}
</style>
</head>
<body onload="run()">
<h1>Touch Events: single-touch tests</h1>
<div id="target0">
Touch this box with one finger (or other pointing device)...
</div>
<div id="target1">
...then drag to this box and lift your finger. Then tap on Done.
</div>
<button id="done">Done</button>
<div id="log"></div>
</body>
</html>