diff --git a/src/dom/cdata_section.zig b/src/dom/cdata_section.zig
new file mode 100644
index 00000000..8f02ceb1
--- /dev/null
+++ b/src/dom/cdata_section.zig
@@ -0,0 +1,12 @@
+const std = @import("std");
+
+const parser = @import("../netsurf.zig");
+
+const Text = @import("text.zig").Text;
+
+// https://dom.spec.whatwg.org/#cdatasection
+pub const CDATASection = struct {
+    pub const Self = parser.CDATASection;
+    pub const prototype = *Text;
+    pub const mem_guarantied = true;
+};
diff --git a/src/dom/character_data.zig b/src/dom/character_data.zig
index 8f139691..54c4b603 100644
--- a/src/dom/character_data.zig
+++ b/src/dom/character_data.zig
@@ -9,13 +9,16 @@ const parser = @import("../netsurf.zig");
 
 const Node = @import("node.zig").Node;
 const Comment = @import("comment.zig").Comment;
-const Text = @import("text.zig").Text;
+const Text = @import("text.zig");
+const ProcessingInstruction = @import("processing_instruction.zig").ProcessingInstruction;
 const HTMLElem = @import("../html/elements.zig");
 
 // CharacterData interfaces
 pub const Interfaces = generate.Tuple(.{
     Comment,
-    Text,
+    Text.Text,
+    Text.Interfaces,
+    ProcessingInstruction,
 });
 
 // CharacterData implementation
diff --git a/src/dom/document.zig b/src/dom/document.zig
index adf34d35..8bb4577d 100644
--- a/src/dom/document.zig
+++ b/src/dom/document.zig
@@ -7,6 +7,7 @@ const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
 
 const Node = @import("node.zig").Node;
+const NodeUnion = @import("node.zig").Union;
 
 const collection = @import("html_collection.zig");
 
@@ -129,6 +130,40 @@ pub const Document = struct {
         return try parser.documentCreateDocumentFragment(self);
     }
 
+    pub fn _createTextNode(self: *parser.Document, data: []const u8) !*parser.Text {
+        return try parser.documentCreateTextNode(self, data);
+    }
+
+    pub fn _createCDATASection(self: *parser.Document, data: []const u8) !*parser.CDATASection {
+        return try parser.documentCreateCDATASection(self, data);
+    }
+
+    pub fn _createComment(self: *parser.Document, data: []const u8) !*parser.Comment {
+        return try parser.documentCreateComment(self, data);
+    }
+
+    pub fn _createProcessingInstruction(self: *parser.Document, target: []const u8, data: []const u8) !*parser.ProcessingInstruction {
+        return try parser.documentCreateProcessingInstruction(self, target, data);
+    }
+
+    pub fn _importNode(self: *parser.Document, node: *parser.Node, deep: ?bool) !NodeUnion {
+        const n = try parser.documentImportNode(self, node, deep orelse false);
+        return try Node.toInterface(n);
+    }
+
+    pub fn _adoptNode(self: *parser.Document, node: *parser.Node) !NodeUnion {
+        const n = try parser.documentAdoptNode(self, node);
+        return try Node.toInterface(n);
+    }
+
+    pub fn _createAttribute(self: *parser.Document, name: []const u8) !*parser.Attribute {
+        return try parser.documentCreateAttribute(self, name);
+    }
+
+    pub fn _createAttributeNS(self: *parser.Document, ns: []const u8, qname: []const u8) !*parser.Attribute {
+        return try parser.documentCreateAttributeNS(self, ns, qname);
+    }
+
     pub fn deinit(_: *parser.Document, _: std.mem.Allocator) void {}
 };
 
@@ -222,10 +257,55 @@ pub fn testExecFn(
     try checkCases(js_env, &new);
 
     var createDocumentFragment = [_]Case{
-        .{ .src = "document.createDocumentFragment()", .ex = "[object DocumentFragment]" },
+        .{ .src = "var v = document.createDocumentFragment()", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "#document-fragment" },
     };
     try checkCases(js_env, &createDocumentFragment);
 
+    var createTextNode = [_]Case{
+        .{ .src = "var v = document.createTextNode('foo')", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "#text" },
+    };
+    try checkCases(js_env, &createTextNode);
+
+    var createCDATASection = [_]Case{
+        .{ .src = "var v = document.createCDATASection('foo')", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "#cdata-section" },
+    };
+    try checkCases(js_env, &createCDATASection);
+
+    var createComment = [_]Case{
+        .{ .src = "var v = document.createComment('foo')", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "#comment" },
+    };
+    try checkCases(js_env, &createComment);
+
+    var createProcessingInstruction = [_]Case{
+        .{ .src = "let pi = document.createProcessingInstruction('foo', 'bar')", .ex = "undefined" },
+        .{ .src = "pi.target", .ex = "foo" },
+    };
+    try checkCases(js_env, &createProcessingInstruction);
+
+    var importNode = [_]Case{
+        .{ .src = "let nimp = document.getElementById('content')", .ex = "undefined" },
+        .{ .src = "var v = document.importNode(nimp)", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "DIV" },
+    };
+    try checkCases(js_env, &importNode);
+
+    var adoptNode = [_]Case{
+        .{ .src = "let nadop = document.getElementById('content')", .ex = "undefined" },
+        .{ .src = "var v = document.adoptNode(nadop)", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "DIV" },
+    };
+    try checkCases(js_env, &adoptNode);
+
+    var createAttr = [_]Case{
+        .{ .src = "var v = document.createAttribute('foo')", .ex = "undefined" },
+        .{ .src = "v.nodeName", .ex = "foo" },
+    };
+    try checkCases(js_env, &createAttr);
+
     const tags = comptime parser.Tag.all();
     comptime var createElements: [(tags.len) * 2]Case = undefined;
     inline for (tags, 0..) |tag, i| {
diff --git a/src/dom/node.zig b/src/dom/node.zig
index 022aa9c7..86b3dae5 100644
--- a/src/dom/node.zig
+++ b/src/dom/node.zig
@@ -54,6 +54,8 @@ pub const Node = struct {
             ),
             .comment => .{ .Comment = @as(*parser.Comment, @ptrCast(node)) },
             .text => .{ .Text = @as(*parser.Text, @ptrCast(node)) },
+            .cdata_section => .{ .CDATASection = @as(*parser.CDATASection, @ptrCast(node)) },
+            .processing_instruction => .{ .ProcessingInstruction = @as(*parser.ProcessingInstruction, @ptrCast(node)) },
             .document => .{ .HTMLDocument = @as(*parser.DocumentHTML, @ptrCast(node)) },
             .document_type => .{ .DocumentType = @as(*parser.DocumentType, @ptrCast(node)) },
             .attribute => .{ .Attr = @as(*parser.Attribute, @ptrCast(node)) },
diff --git a/src/dom/processing_instruction.zig b/src/dom/processing_instruction.zig
new file mode 100644
index 00000000..cb5cf29d
--- /dev/null
+++ b/src/dom/processing_instruction.zig
@@ -0,0 +1,17 @@
+const std = @import("std");
+
+const parser = @import("../netsurf.zig");
+
+const CharacterData = @import("character_data.zig").CharacterData;
+
+// https://dom.spec.whatwg.org/#processinginstruction
+pub const ProcessingInstruction = struct {
+    pub const Self = parser.ProcessingInstruction;
+    pub const prototype = *CharacterData;
+    pub const mem_guarantied = true;
+
+    pub fn get_target(self: *parser.ProcessingInstruction) ![]const u8 {
+        // libdom stores the ProcessingInstruction target in the node's name.
+        return try parser.nodeName(@as(*parser.Node, @ptrCast(self)));
+    }
+};
diff --git a/src/dom/text.zig b/src/dom/text.zig
index ec098d00..30abec22 100644
--- a/src/dom/text.zig
+++ b/src/dom/text.zig
@@ -3,10 +3,17 @@ const std = @import("std");
 const jsruntime = @import("jsruntime");
 const Case = jsruntime.test_utils.Case;
 const checkCases = jsruntime.test_utils.checkCases;
+const generate = @import("../generate.zig");
 
 const parser = @import("../netsurf.zig");
 
 const CharacterData = @import("character_data.zig").CharacterData;
+const CDATASection = @import("cdata_section.zig").CDATASection;
+
+// Text interfaces
+pub const Interfaces = generate.Tuple(.{
+    CDATASection,
+});
 
 pub const Text = struct {
     pub const Self = parser.Text;
diff --git a/src/netsurf.zig b/src/netsurf.zig
index 0919e56a..d32b2cee 100644
--- a/src/netsurf.zig
+++ b/src/netsurf.zig
@@ -791,6 +791,9 @@ pub fn characterDataSubstringData(cdata: *CharacterData, offset: u32, count: u32
     return strToData(s.?);
 }
 
+// CDATASection
+pub const CDATASection = c.dom_cdata_section;
+
 // Text
 pub const Text = c.dom_text;
 
@@ -815,6 +818,9 @@ pub fn textSplitText(text: *Text, offset: u32) !*Text {
 // Comment
 pub const Comment = c.dom_comment;
 
+// ProcessingInstruction
+pub const ProcessingInstruction = c.dom_processing_instruction;
+
 // Attribute
 pub const Attribute = c.dom_attr;
 
@@ -1137,6 +1143,74 @@ pub inline fn documentCreateDocumentFragment(doc: *Document) !*DocumentFragment
     return df.?;
 }
 
+pub inline fn documentCreateTextNode(doc: *Document, s: []const u8) !*Text {
+    var txt: ?*Text = undefined;
+    const err = documentVtable(doc).dom_document_create_text_node.?(doc, try strFromData(s), &txt);
+    try DOMErr(err);
+    return txt.?;
+}
+
+pub inline fn documentCreateCDATASection(doc: *Document, s: []const u8) !*CDATASection {
+    var cdata: ?*CDATASection = undefined;
+    const err = documentVtable(doc).dom_document_create_cdata_section.?(doc, try strFromData(s), &cdata);
+    try DOMErr(err);
+    return cdata.?;
+}
+
+pub inline fn documentCreateComment(doc: *Document, s: []const u8) !*Comment {
+    var com: ?*Comment = undefined;
+    const err = documentVtable(doc).dom_document_create_comment.?(doc, try strFromData(s), &com);
+    try DOMErr(err);
+    return com.?;
+}
+
+pub inline fn documentCreateProcessingInstruction(doc: *Document, target: []const u8, data: []const u8) !*ProcessingInstruction {
+    var pi: ?*ProcessingInstruction = undefined;
+    const err = documentVtable(doc).dom_document_create_processing_instruction.?(
+        doc,
+        try strFromData(target),
+        try strFromData(data),
+        &pi,
+    );
+    try DOMErr(err);
+    return pi.?;
+}
+
+pub inline fn documentImportNode(doc: *Document, node: *Node, deep: bool) !*Node {
+    var res: NodeExternal = undefined;
+    const nodeext = toNodeExternal(Node, node);
+    const err = documentVtable(doc).dom_document_import_node.?(doc, nodeext, deep, &res);
+    try DOMErr(err);
+    return @as(*Node, @ptrCast(res));
+}
+
+pub inline fn documentAdoptNode(doc: *Document, node: *Node) !*Node {
+    var res: NodeExternal = undefined;
+    const nodeext = toNodeExternal(Node, node);
+    const err = documentVtable(doc).dom_document_adopt_node.?(doc, nodeext, &res);
+    try DOMErr(err);
+    return @as(*Node, @ptrCast(res));
+}
+
+pub inline fn documentCreateAttribute(doc: *Document, name: []const u8) !*Attribute {
+    var attr: ?*Attribute = undefined;
+    const err = documentVtable(doc).dom_document_create_attribute.?(doc, try strFromData(name), &attr);
+    try DOMErr(err);
+    return attr.?;
+}
+
+pub inline fn documentCreateAttributeNS(doc: *Document, ns: []const u8, qname: []const u8) !*Attribute {
+    var attr: ?*Attribute = undefined;
+    const err = documentVtable(doc).dom_document_create_attribute_ns.?(
+        doc,
+        try strFromData(ns),
+        try strFromData(qname),
+        &attr,
+    );
+    try DOMErr(err);
+    return attr.?;
+}
+
 // DocumentHTML
 pub const DocumentHTML = c.dom_html_document;
 
diff --git a/tests/wpt/dom/nodes/Document-adoptNode.html b/tests/wpt/dom/nodes/Document-adoptNode.html
new file mode 100644
index 00000000..60a4e677
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-adoptNode.html
@@ -0,0 +1,50 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.adoptNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-adoptnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<!--creates an element with local name "x<": --><x<>x</x<>
+<script>
+test(function() {
+  var y = document.getElementsByTagName("x<")[0]
+  var child = y.firstChild
+  assert_equals(y.parentNode, document.body)
+  assert_equals(y.ownerDocument, document)
+  assert_equals(document.adoptNode(y), y)
+  assert_equals(y.parentNode, null)
+  assert_equals(y.firstChild, child)
+  assert_equals(y.ownerDocument, document)
+  assert_equals(child.ownerDocument, document)
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_equals(doc.adoptNode(y), y)
+  assert_equals(y.parentNode, null)
+  assert_equals(y.firstChild, child)
+  assert_equals(y.ownerDocument, doc)
+  assert_equals(child.ownerDocument, doc)
+}, "Adopting an Element called 'x<' should work.")
+
+test(function() {
+  var x = document.createElement(":good:times:")
+  assert_equals(document.adoptNode(x), x);
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_equals(doc.adoptNode(x), x)
+  assert_equals(x.parentNode, null)
+  assert_equals(x.ownerDocument, doc)
+}, "Adopting an Element called ':good:times:' should work.")
+
+test(function() {
+  var doctype = document.doctype;
+  assert_equals(doctype.parentNode, document)
+  assert_equals(doctype.ownerDocument, document)
+  assert_equals(document.adoptNode(doctype), doctype)
+  assert_equals(doctype.parentNode, null)
+  assert_equals(doctype.ownerDocument, document)
+}, "Explicitly adopting a DocumentType should work.")
+
+test(function() {
+  var doc = document.implementation.createDocument(null, null, null)
+  assert_throws_dom("NOT_SUPPORTED_ERR", function() { document.adoptNode(doc) })
+}, "Adopting a Document should throw.")
+</script>
diff --git a/tests/wpt/dom/nodes/Document-createAttribute.html b/tests/wpt/dom/nodes/Document-createAttribute.html
new file mode 100644
index 00000000..b3dc8b60
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createAttribute.html
@@ -0,0 +1,55 @@
+<!doctype html>
+<meta charset=utf-8>
+<title>Document.createAttribute</title>
+<script src=/resources/testharness.js></script>
+<script src=/resources/testharnessreport.js></script>
+<script src=attributes.js></script>
+<script src=productions.js></script>
+<div id=log>
+<script>
+var xml_document;
+setup(function() {
+  xml_document = document.implementation.createDocument(null, null, null);
+});
+
+invalid_names.forEach(function(name) {
+  test(function() {
+    assert_throws_dom("INVALID_CHARACTER_ERR", function() {
+      document.createAttribute(name, "test");
+    });
+  }, "HTML document.createAttribute(" + format_value(name) + ") should throw");
+
+  test(function() {
+    assert_throws_dom("INVALID_CHARACTER_ERR", function() {
+      xml_document.createAttribute(name, "test");
+    });
+  }, "XML document.createAttribute(" + format_value(name) + ") should throw");
+});
+
+valid_names.forEach(name => {
+  test(() => {
+    let attr = document.createAttribute(name);
+    attr_is(attr, "", name.toLowerCase(), null, null, name.toLowerCase());
+  }, `HTML document.createAttribute(${format_value(name)})`);
+
+  test(() => {
+    let attr = xml_document.createAttribute(name);
+    attr_is(attr, "", name, null, null, name);
+  }, `XML document.createAttribute(${format_value(name)})`);
+});
+
+var tests = ["title", "TITLE", null, undefined];
+tests.forEach(function(name) {
+  test(function() {
+    var attribute = document.createAttribute(name);
+    attr_is(attribute, "", String(name).toLowerCase(), null, null, String(name).toLowerCase());
+    assert_equals(attribute.ownerElement, null);
+  }, "HTML document.createAttribute(" + format_value(name) + ")");
+
+  test(function() {
+    var attribute = xml_document.createAttribute(name);
+    attr_is(attribute, "", String(name), null, null, String(name));
+    assert_equals(attribute.ownerElement, null);
+  }, "XML document.createAttribute(" + format_value(name) + ")");
+});
+</script>
diff --git a/tests/wpt/dom/nodes/Document-createCDATASection-xhtml.xhtml b/tests/wpt/dom/nodes/Document-createCDATASection-xhtml.xhtml
new file mode 100644
index 00000000..b0a5a7f2
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createCDATASection-xhtml.xhtml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+  <meta charset="utf-8"/>
+  <title>document.createCDATASection</title>
+  <link rel="help" href="https://dom.spec.whatwg.org/#dom-document-createcdatasection"/>
+  <script src="/resources/testharness.js"></script>
+  <script src="/resources/testharnessreport.js"></script>
+  <script src="Document-createComment-createTextNode.js"></script>
+</head>
+
+<body>
+  <script>
+  "use strict";
+  test_create("createCDATASection", CDATASection, 4, "#cdata-section");
+
+  test(() => {
+    assert_throws_dom("InvalidCharacterError", () => document.createCDATASection(" ]" + "]>  "));
+  }, "Creating a CDATA section containing the string \"]" + "]>\" must throw");
+  </script>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/Document-createCDATASection.html b/tests/wpt/dom/nodes/Document-createCDATASection.html
new file mode 100644
index 00000000..72b3684c
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createCDATASection.html
@@ -0,0 +1,16 @@
+<!DOCTYPE html>
+<meta charset="utf-8">
+<title>document.createCDATASection must throw in HTML documents</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-document-createcdatasection">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+
+<script>
+"use strict";
+
+setup({ single_test: true });
+
+assert_throws_dom("NotSupportedError", () => document.createCDATASection("foo"));
+
+done();
+</script>
diff --git a/tests/wpt/dom/nodes/Document-createComment-createTextNode.js b/tests/wpt/dom/nodes/Document-createComment-createTextNode.js
new file mode 100644
index 00000000..62a38d38
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createComment-createTextNode.js
@@ -0,0 +1,22 @@
+function test_create(method, iface, nodeType, nodeName) {
+  ["\u000b", "a -- b", "a-", "-b", null, undefined].forEach(function(value) {
+    test(function() {
+      var c = document[method](value);
+      var expected = String(value);
+      assert_true(c instanceof iface);
+      assert_true(c instanceof CharacterData);
+      assert_true(c instanceof Node);
+      assert_equals(c.ownerDocument, document);
+      assert_equals(c.data, expected, "data");
+      assert_equals(c.nodeValue, expected, "nodeValue");
+      assert_equals(c.textContent, expected, "textContent");
+      assert_equals(c.length, expected.length);
+      assert_equals(c.nodeType, nodeType);
+      assert_equals(c.nodeName, nodeName);
+      assert_equals(c.hasChildNodes(), false);
+      assert_equals(c.childNodes.length, 0);
+      assert_equals(c.firstChild, null);
+      assert_equals(c.lastChild, null);
+    }, method + "(" + format_value(value) + ")");
+  });
+}
diff --git a/tests/wpt/dom/nodes/Document-createComment.html b/tests/wpt/dom/nodes/Document-createComment.html
new file mode 100644
index 00000000..a175c3a2
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createComment.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createComment</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createcomment">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodevalue">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-textcontent">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-length">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodetype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-haschildnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-firstchild">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-lastchild">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createComment-createTextNode.js"></script>
+<div id="log"></div>
+<script>
+test_create("createComment", Comment, 8, "#comment");
+</script>
diff --git a/tests/wpt/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml b/tests/wpt/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml
new file mode 100644
index 00000000..d06f70fd
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createProcessingInstruction-xhtml.xhtml
@@ -0,0 +1,15 @@
+<html xmlns="http://www.w3.org/1999/xhtml">
+<head>
+<title>Document.createProcessingInstruction in XML documents</title>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-processinginstruction-target"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-characterdata-data"/>
+<link rel="help" href="https://dom.spec.whatwg.org/#dom-node-ownerdocument"/>
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+</head>
+<body>
+<div id="log"/>
+<script src="Document-createProcessingInstruction.js"/>
+</body>
+</html>
diff --git a/tests/wpt/dom/nodes/Document-createProcessingInstruction.html b/tests/wpt/dom/nodes/Document-createProcessingInstruction.html
new file mode 100644
index 00000000..c57a792f
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createProcessingInstruction.html
@@ -0,0 +1,11 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createProcessingInstruction in HTML documents</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createprocessinginstruction">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-processinginstruction-target">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id=log></div>
+<script src="Document-createProcessingInstruction.js"></script>
diff --git a/tests/wpt/dom/nodes/Document-createProcessingInstruction.js b/tests/wpt/dom/nodes/Document-createProcessingInstruction.js
new file mode 100644
index 00000000..d6cc3725
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createProcessingInstruction.js
@@ -0,0 +1,39 @@
+test(function() {
+  var invalid = [
+        ["A", "?>"],
+        ["\u00B7A", "x"],
+        ["\u00D7A", "x"],
+        ["A\u00D7", "x"],
+        ["\\A", "x"],
+        ["\f", "x"],
+        [0, "x"],
+        ["0", "x"]
+      ],
+      valid = [
+        ["xml:fail", "x"],
+        ["A\u00B7A", "x"],
+        ["a0", "x"]
+      ]
+
+  for (var i = 0, il = invalid.length; i < il; i++) {
+    test(function() {
+      assert_throws_dom("INVALID_CHARACTER_ERR", function() {
+        document.createProcessingInstruction(invalid[i][0], invalid[i][1])
+      })
+    }, "Should throw an INVALID_CHARACTER_ERR for target " +
+       format_value(invalid[i][0]) + " and data " +
+       format_value(invalid[i][1]) + ".")
+  }
+  for (var i = 0, il = valid.length; i < il; ++i) {
+    test(function() {
+      var pi = document.createProcessingInstruction(valid[i][0], valid[i][1]);
+      assert_equals(pi.target, valid[i][0]);
+      assert_equals(pi.data, valid[i][1]);
+      assert_equals(pi.ownerDocument, document);
+      assert_true(pi instanceof ProcessingInstruction);
+      assert_true(pi instanceof Node);
+    }, "Should get a ProcessingInstruction for target " +
+      format_value(valid[i][0]) + " and data " +
+      format_value(valid[i][1]) + ".")
+  }
+})
diff --git a/tests/wpt/dom/nodes/Document-createTextNode.html b/tests/wpt/dom/nodes/Document-createTextNode.html
new file mode 100644
index 00000000..ccc1b1b7
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-createTextNode.html
@@ -0,0 +1,21 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.createTextNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-createtextnode">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-ownerdocument">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-data">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodevalue">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-textcontent">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-characterdata-length">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-nodetype">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-haschildnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-childnodes">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-firstchild">
+<link rel=help href="https://dom.spec.whatwg.org/#dom-node-lastchild">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<script src="Document-createComment-createTextNode.js"></script>
+<div id="log"></div>
+<script>
+test_create("createTextNode", Text, 3, "#text");
+</script>
diff --git a/tests/wpt/dom/nodes/Document-importNode.html b/tests/wpt/dom/nodes/Document-importNode.html
new file mode 100644
index 00000000..d27cce6c
--- /dev/null
+++ b/tests/wpt/dom/nodes/Document-importNode.html
@@ -0,0 +1,67 @@
+<!DOCTYPE html>
+<meta charset=utf-8>
+<title>Document.importNode</title>
+<link rel=help href="https://dom.spec.whatwg.org/#dom-document-importnode">
+<script src="/resources/testharness.js"></script>
+<script src="/resources/testharnessreport.js"></script>
+<div id="log"></div>
+<script>
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "No 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, undefined);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "Undefined 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, true);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild.ownerDocument, document);
+}, "True 'deep' argument.")
+test(function() {
+  var doc = document.implementation.createHTMLDocument("Title");
+  var div = doc.body.appendChild(doc.createElement("div"));
+  div.appendChild(doc.createElement("span"));
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  var newDiv = document.importNode(div, false);
+  assert_equals(div.ownerDocument, doc);
+  assert_equals(div.firstChild.ownerDocument, doc);
+  assert_equals(newDiv.ownerDocument, document);
+  assert_equals(newDiv.firstChild, null);
+}, "False 'deep' argument.")
+
+test(function() {
+  let doc = document.implementation.createHTMLDocument("Title");
+  doc.body.setAttributeNS("http://example.com/", "p:name", "value");
+  let originalAttr = doc.body.getAttributeNodeNS("http://example.com/", "name");
+  let imported = document.importNode(originalAttr, true);
+  assert_equals(imported.prefix, originalAttr.prefix);
+  assert_equals(imported.namespaceURI, originalAttr.namespaceURI);
+  assert_equals(imported.localName, originalAttr.localName);
+}, "Import an Attr node with namespace/prefix correctly.");
+</script>