Remove the popovertarget attribute or set it to an invalid value should clear the explicitly set attr-element.
Differential Revision: https://phabricator.services.mozilla.com/D201711
bugzilla-url: https://bugzilla.mozilla.org/show_bug.cgi?id=1879001
gecko-commit: 6f0ebcced75f999a360fdd4f2e00d66fe811dc84
gecko-reviewers: emilio
diff --git a/html/semantics/popovers/popovertarget-reflection.html b/html/semantics/popovers/popovertarget-reflection.html
index 7f265ae..d0750fd 100644
--- a/html/semantics/popovers/popovertarget-reflection.html
+++ b/html/semantics/popovers/popovertarget-reflection.html
@@ -1,15 +1,25 @@
<!DOCTYPE html>
<link rel=author href="mailto:jarhar@chromium.org">
<link rel=help href="https://bugs.chromium.org/p/chromium/issues/detail?id=1523410">
+<link rel=help href="https://bugzilla.mozilla.org/show_bug.cgi?id=1879001">
<link rel=help href="https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#reflecting-content-attributes-in-idl-attributes:element">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
-<button id=mybutton>toggle popover</button>
+<button id=mybutton popovertarget="mypopover">toggle popover</button>
<div id=mypopover popover=auto>popover</div>
<script>
test(() => {
+ assert_equals(mybutton.popoverTargetElement.id, "mypopover",
+ 'Setting element.popoverTargetElement to a valid element should work');
+
+ mybutton.popoverTargetElement = null;
+ assert_false(mybutton.hasAttribute('popovertarget'),
+ 'Setting element.popoverTargetElement to null should unset popovertarget attribute.');
+ assert_equals(mybutton.popoverTargetElement, null,
+ 'Setting element.popoverTargetElement to null should remove the existing element from element.popoverTargetElement.');
+
mybutton.popoverTargetElement = mypopover;
assert_true(mybutton.hasAttribute('popovertarget'),
'Assigning to element.popoverTargetElement should set the popovertarget attribute.');
@@ -17,5 +27,27 @@
mybutton.removeAttribute('popovertarget');
assert_equals(mybutton.popoverTargetElement, null,
'Removing the popovertarget attribute should remove the element from element.popoverTargetElement.');
+
+ mybutton.popoverTargetElement = mypopover;
+ assert_true(mybutton.hasAttribute('popovertarget'),
+ 'Assigning to element.popoverTargetElement should set the popovertarget attribute.');
+
+ mybutton.setAttribute("popovertarget", 'invalid');
+ assert_equals(mybutton.popoverTargetElement, null,
+ 'Setting the popovertarget attribute to a localName that is not attr should remove the existing element from element.popoverTargetElement.');
+
+ mybutton.popoverTargetElement = mypopover;
+ mybutton.setAttribute("popovertarget", "");
+ assert_equals(mybutton.popoverTargetElement.id, "mypopover",
+ 'Setting the popovertarget attribute to empty string right after explicitly setting attribute element should have no effect.');
+
+ mybutton.setAttribute("popovertarget", "mypopover");
+ assert_equals(mybutton.popoverTargetElement.id, "mypopover",
+ 'Setting the popovertarget attribute to a value should set the popover target element.');
+ mybutton.setAttribute("popovertarget", "");
+ assert_equals(mybutton.getAttribute('popovertarget'), "",
+ 'Assigning to element.popoverTargetElement to empty string should update the attribute value to empty string.');
+ assert_equals(mybutton.popoverTargetElement, null,
+ 'Setting the popovertarget attribute to empty string should remove the existing element from element.popoverTargetElement.');
}, 'Element attribute reflection of popoverTargetElement/popovertarget should be kept in sync.');
</script>
