Adding Element.closest() API

LayoutTests/fast/selectors/element-closest-expected.txt

Index: LayoutTests/fast/selectors/element-closest-expected.txt
diff --git a/LayoutTests/fast/selectors/element-closest-expected.txt b/LayoutTests/fast/selectors/element-closest-expected.txt
new file mode 100644
index 0000000000000000000000000000000000000000..cad6abb8ee484fb6bcccf4fd14c0d0c1710b0bac
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+++ b/LayoutTests/fast/selectors/element-closest-expected.txt
@@ -0,0 +1,70 @@
+This test makes sure the closest() API works correctly
+
+On success, you will see a series of "PASS" messages, followed by "TEST COMPLETE".
+
+
+PASS theTarget.closest("#theTarget") is theTarget
+PASS theTarget.closest("ancestor") is ancestor
+PASS theTarget.closest("tribe ancestor") is ancestor
+PASS theTarget.closest("tribe ancestor sibling") is sibling
+PASS theTarget.closest("tribe > ancestor") is ancestor
+PASS theTarget.closest("realm + ancestor") is ancestor
+PASS theTarget.closest("realm ~ ancestor") is ancestor
+PASS theTarget.closest("tribe, ancestor") is ancestor
+PASS theTarget.closest("ancestor, tribe") is ancestor
+PASS theTarget.closest("tribe realm") is null
+PASS theTarget.closest("tribe realm throne") is null
+PASS theTarget.closest("tribe realm ancestor") is null
+PASS theTarget.closest("realm > ancestor") is null
+PASS theTarget.closest("throne + ancestor") is null
+PASS theTarget.closest("throne ~ ancestor") is null
+PASS theTarget.closest(".classic") is ancestor
+PASS theTarget.closest("#john") is ancestor
+PASS theTarget.closest("doe") is null
+PASS theTarget.closest("ancestor[name=old]") is ancestor
+PASS theTarget.closest(null) is null
+PASS theTarget.closest(undefined) is null
+PASS sour.closest("lemon") is sour
+PASS sour.closest("a, b, c, d") is d
+PASS sour.closest("a, b, c") is c
+PASS sour.closest("a, b") is b
+PASS sour.closest("d, c, b, a") is d
+PASS sour.closest("c, b, a") is c
+PASS sour.closest("b, a") is b
+PASS sour.closest("a") is a
+PASS document.closest is undefined
+PASS document.closest() threw exception TypeError: undefined is not a function.
+PASS theTarget.closest() threw exception TypeError: Failed to execute 'closest' on 'Element': 1 argument required, but only 0 present..
+PASS theTarget.closest("") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '' is not a valid selector..
+PASS theTarget.closest(".123") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '.123' is not a valid selector..
+PASS theTarget.closest("    ") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '    ' is not a valid selector..
+PASS theTarget.closest(")") threw exception SyntaxError: Failed to execute 'closest' on 'Element': ')' is not a valid selector..
+PASS theTarget.closest("(") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '(' is not a valid selector..
+PASS theTarget.closest("()") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '()' is not a valid selector..
+PASS theTarget.closest("^_^") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '^_^' is not a valid selector..
+PASS theTarget.closest("{") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '{' is not a valid selector..
+PASS theTarget.closest("}") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '}' is not a valid selector..
+PASS theTarget.closest("{}") threw exception SyntaxError: Failed to execute 'closest' on 'Element': '{}' is not a valid selector..
+PASS theTarget.closest(":scope") is theTarget
+PASS theTarget.closest(":not(:scope)") is ancestor
+PASS theTarget.closest("ancestor :scope") is theTarget
+PASS theTarget.closest("ancestor > :scope") is theTarget
+PASS theTarget.closest("ancestor:scope") is null
+PASS theTarget.closest("sibling + :scope") is theTarget
+PASS theTarget.closest("sibling ~ :scope") is theTarget
+PASS theTarget.closest("#theTarget:scope") is theTarget
+PASS theTarget.closest(":scope#theTarget") is theTarget
+PASS theTarget.closest("[webkit]:scope#theTarget") is theTarget
+PASS theTarget.closest(":not([webkit=fast]):scope#theTarget") is null
+PASS theTarget.closest(":scope target") is null
+PASS theTarget.closest(":scope > target") is null
+PASS theTarget.closest(":scope + target") is null
+PASS theTarget.closest(":scope ~ target") is null
+PASS theTarget.closest(":scope *") is null
+PASS theTarget.closest(":scope > *") is null
+PASS theTarget.closest(":scope + *") is null
+PASS theTarget.closest(":scope ~ *") is null
+PASS successfullyParsed is true
+
+TEST COMPLETE
+