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Bug 1276438 part 3. Align the .body setter with the spec a bit better.

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There are two changes here:

1) We allow setting .body even if the root element is not an <html:html>. This is what the spec says to do, and what we used to do before the changes in bug
366200. No tests for this yet, pending https://github.com/whatwg/html/issues/3403 getting resolved.

2) We use GetBody(), not GetBodyElement(), to look for an existing thing to replace. This matters if there are <frameset>s involved.

Tag UXP Issue #1344
Tag UXP Issue #252
This commit is contained in:
Gaming4JC 2020-01-01 15:08:37 -05:00 • committed by Roy Tam
commit e8e20e994d
2 changed files with 53 additions and 5 deletions
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50
testing/web-platform/tests/html/dom/documents/dom-tree-accessors/Document.body.html
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@ -166,4 +166,54 @@ test(function() {
doc.body = new_frameset;
assert_equals(doc.body, new_frameset, "test6-3, append frameset to a new document");
}, "Setting document.body to a new frameset element.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var f =
html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, f);
var b = doc.createElement("body");
doc.body = b;
assert_equals(f.parentNode, null,
"Frameset should have been removed from the tree");
assert_equals(doc.body, b, "Body should be the new doc.body");
}, "Setting document.body to a body will replace an existing frameset if there is one.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var b =
html.appendChild(doc.createElement("body"));
assert_equals(doc.body, b);
var f = doc.createElement("frameset");
doc.body = f;
assert_equals(b.parentNode, null,
"Body should have been removed from the tree");
assert_equals(doc.body, f, "Frameset should be the new doc.body");
}, "Setting document.body to a frameset will replace an existing body if there is one.");
test(function() {
var doc = createDocument();
var html = doc.appendChild(doc.createElement("html"));
var b =
html.appendChild(doc.createElement("body"));
var f1 = html.appendChild(doc.createElement("frameset"));
assert_equals(doc.body, b);
var f2 = doc.createElement("frameset");
doc.body = f2;
assert_equals(b.parentNode, null,
"Body should have been removed from the tree");
assert_equals(f1.parentNode, html,
"Frameset following body should still be in the tree.");
assert_equals(doc.body, f2, "New frameset should be the new doc.body");
assert_equals(f2.nextSibling, f1, "New frameset should have replaced the body");
}, "Setting document.body to a frameset will replace the first existing body/frameset.");
</script>