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<!DOCTYPE html>
<html>
<body>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
test(function() {
assert_true('type' in screen.orientation);
assert_true('angle' in screen.orientation);
}, "Test screen.orientation properties");
test(function() {
assert_equals(screen.orientation.type, "portrait-primary");
assert_equals(screen.orientation.angle, 0);
}, "Test screen.orientation default values.");
test(function() {
var type = screen.orientation.type;
var angle = screen.orientation.angle;
screen.orientation.type = 'foo';
screen.orientation.angle = 42;
assert_equals(screen.orientation.type, type);
assert_equals(screen.orientation.angle, angle);
}, "Test that screen.orientation properties are not writable");
test(function() {
assert_equals(screen.orientation, screen.orientation);
}, "Test that screen.orientation is always the same object");
async_test(function(t) {
var orientation = screen.orientation;
var orientationType = screen.orientation.type;
var orientationAngle = screen.orientation.angle;
screen.orientation.unlock();
screen.orientation.lock('landscape-primary').then(function () {
t.step(function () {
assert_equals(screen.orientation, orientation);
assert_equals(screen.orientation.type, orientation.type);
assert_equals(screen.orientation.angle, orientation.angle);
assert_not_equals(screen.orientation.type, orientationType);
assert_not_equals(screen.orientation.angle, orientationAngle);
});
t.done();
screen.orientation.unlock();
}, function () {
t.step(function () {
assert_unreached('Unexpected orientation change');
});
t.done();
screen.orientation.unlock();
});
}, "Test that screen.orientation values change if the orientation changes");
</script>
</body>
</html>
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