/
test_node_reparenting.rb
774 lines (684 loc) · 31 KB
/
test_node_reparenting.rb
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# frozen_string_literal: true
require "helper"
module Nokogiri
module XML
class TestNodeReparenting < Nokogiri::TestCase
describe "standard node reparenting behavior" do
# describe "namespace handling during reparenting" do
# describe "given a Node" do
# describe "with a Namespace" do
# it "keeps the Namespace"
# end
# describe "given a parent Node with a default and a non-default Namespace" do
# describe "passed an Node without a namespace" do
# it "inserts an Node that inherits the default Namespace"
# end
# describe "passed a Node with a Namespace that matches the parent's non-default Namespace" do
# it "inserts a Node that inherits the matching parent Namespace"
# end
# end
# end
# describe "given a markup string" do
# describe "parsed relative to the document" do
# describe "with a Namespace" do
# it "keeps the Namespace"
# end
# describe "given a parent Node with a default and a non-default Namespace" do
# describe "passed an Node without a namespace" do
# it "inserts an Node that inherits the default Namespace"
# end
# describe "passed a Node with a Namespace that matches the parent's non-default Namespace" do
# it "inserts a Node that inherits the matching parent Namespace"
# end
# end
# end
# describe "parsed relative to a specific node" do
# describe "with a Namespace" do
# it "keeps the Namespace"
# end
# describe "given a parent Node with a default and a non-default Namespace" do
# describe "passed an Node without a namespace" do
# it "inserts an Node that inherits the default Namespace"
# end
# describe "passed a Node with a Namespace that matches the parent's non-default Namespace" do
# it "inserts a Node that inherits the matching parent Namespace"
# end
# end
# end
# end
# end
before do
@doc = Nokogiri::XML("<root><a1>First node</a1><a2>Second node</a2><a3>Third <bx />node</a3></root>")
@doc2 = @doc.dup
@fragment_string = "<b1>foo</b1><b2>bar</b2>"
@fragment = Nokogiri::XML::DocumentFragment.parse(@fragment_string)
@node_set = Nokogiri::XML("<root><b1>foo</b1><b2>bar</b2></root>").xpath("/root/node()")
end
{
:add_child => { target: "/root/a1", returns_self: false, children_tags: %w[text b1 b2] },
:<< => { target: "/root/a1", returns_self: true, children_tags: %w[text b1 b2] },
:replace => { target: "/root/a1/node()", returns_self: false, children_tags: %w[b1 b2] },
:swap => { target: "/root/a1/node()", returns_self: true, children_tags: %w[b1 b2] },
:children= => { target: "/root/a1", returns_self: false, children_tags: %w[b1 b2] },
:inner_html= => { target: "/root/a1", returns_self: true, children_tags: %w[b1 b2] },
:add_previous_sibling => { target: "/root/a1/text()", returns_self: false, children_tags: %w[b1 b2 text] },
:previous= => { target: "/root/a1/text()", returns_self: false, children_tags: %w[b1 b2 text] },
:before => { target: "/root/a1/text()", returns_self: true, children_tags: %w[b1 b2 text] },
:add_next_sibling => { target: "/root/a1/text()", returns_self: false, children_tags: %w[text b1 b2] },
:next= => { target: "/root/a1/text()", returns_self: false, children_tags: %w[text b1 b2] },
:after => { target: "/root/a1/text()", returns_self: true, children_tags: %w[text b1 b2] },
}.each do |method, params|
describe "##{method}" do
describe "passed a Node" do
[:current, :another].each do |which|
describe "passed a Node in the #{which} document" do
before do
@other_doc = which == :current ? @doc : @doc2
@other_node = @other_doc.at_xpath("/root/a2")
end
it "unlinks the Node from its previous position" do
@doc.at_xpath(params[:target]).send(method, @other_node)
result = @other_doc.at_xpath("/root/a2")
_(result).must_be_nil
end
it "inserts the Node in the proper position" do
@doc.at_xpath(params[:target]).send(method, @other_node)
result = @doc.at_xpath("/root/a1/a2")
_(result).wont_be_nil
end
it "returns the expected value" do
sendee = @doc.at_xpath(params[:target])
result = sendee.send(method, @other_node)
if params[:returns_self]
_(result).must_equal(sendee)
else
_(result).must_equal(@other_node)
end
end
end
end
end
describe "passed a markup string" do
it "inserts the fragment roots in the proper position" do
@doc.at_xpath(params[:target]).send(method, @fragment_string)
result = @doc.xpath("/root/a1/node()").collect(&:name)
_(result).must_equal(params[:children_tags])
end
it "returns the expected value" do
sendee = @doc.at_xpath(params[:target])
result = sendee.send(method, @fragment_string)
if params[:returns_self]
_(result).must_equal(sendee)
else
_(result).must_be_kind_of(Nokogiri::XML::NodeSet)
_(result.to_html).must_equal(@fragment_string)
end
end
end
describe "passed a fragment" do
it "inserts the fragment roots in the proper position" do
@doc.at_xpath(params[:target]).send(method, @fragment)
result = @doc.xpath("/root/a1/node()").collect(&:name)
_(result).must_equal(params[:children_tags])
end
end
describe "passed a document" do
it "raises an exception" do
assert_raise(ArgumentError) { @doc.at_xpath("/root/a1").send(method, @doc2) }
end
end
describe "passed a non-Node" do
it "raises an exception" do
assert_raise(ArgumentError) { @doc.at_xpath("/root/a1").send(method, 42) }
end
end
describe "passed a NodeSet" do
it "inserts each member of the NodeSet in the proper order" do
@doc.at_xpath(params[:target]).send(method, @node_set)
result = @doc.xpath("/root/a1/node()").collect(&:name)
_(result).must_equal(params[:children_tags])
end
end
end
end
describe "text node merging" do
describe "#add_child" do
it "merges the Text node with adjacent Text nodes" do
@doc.at_xpath("/root/a1").add_child(Nokogiri::XML::Text.new("hello", @doc))
result = @doc.at_xpath("/root/a1/text()").content
_(result).must_equal("First nodehello")
end
end
describe "#replace" do
it "merges the Text node with adjacent Text nodes" do
@doc.at_xpath("/root/a3/bx").replace(Nokogiri::XML::Text.new("hello", @doc))
result = @doc.at_xpath("/root/a3/text()").content
_(result).must_equal("Third hellonode")
end
end
end
describe "in-context parsing" do
specs = {
:add_child => :self,
:<< => :self,
:replace => :parent,
:swap => :parent,
:children= => :self,
:inner_html= => :self,
:add_previous_sibling => :parent,
:previous= => :parent,
:before => :parent,
:add_next_sibling => :parent,
:next= => :parent,
:after => :parent,
}
specs.each do |method, which|
describe "##{method} parsing input" do
let(:xml) do
<<~EOF
<root>
<parent><context></context></parent>
</root>
EOF
end
let(:doc) { Nokogiri::XML::Document.parse(xml) }
let(:context_node) { doc.at_css("context") }
describe "with a parent" do
let(:expected_callee) do
if which == :self
context_node
elsif which == :parent
context_node.parent
else
raise("unable to discern what the test means by #{which}")
end
end
before do
class << expected_callee
attr_reader :coerce_was_called
def coerce(data)
@coerce_was_called = true
super
end
end
end
it "in context of #{which}" do
context_node.__send__(method, "<child>content</child>")
assert expected_callee.coerce_was_called, "expected coerce to be called on #{which}"
end
end
if which == :parent
describe "without a parent" do
before { context_node.unlink }
it "raises an exception" do
ex = assert_raise(RuntimeError) do
context_node.__send__(method, "<child>content</child>")
end
assert_match(/no parent/, ex.message)
end
end
end
end
end
end
end
describe "ad hoc node reparenting behavior" do
describe "#<<" do
it "allows chaining" do
doc = Nokogiri::XML::Document.new
root = Nokogiri::XML::Element.new("root", doc)
doc.root = root
child1 = Nokogiri::XML::Element.new("child1", doc)
child2 = Nokogiri::XML::Element.new("child2", doc)
doc.root << child1 << child2
assert_equal [child1, child2], doc.root.children.to_a
end
end
describe "#add_child" do
describe "given a new node with a namespace" do
it "keeps the namespace" do
doc = Nokogiri::XML::Document.new
item = Nokogiri::XML::Element.new("item", doc)
doc.root = item
entry = Nokogiri::XML::Element.new("entry", doc)
entry.add_namespace("tlm", "http://tenderlovemaking.com")
assert_equal "http://tenderlovemaking.com", entry.namespaces["xmlns:tlm"]
item.add_child(entry)
assert_equal "http://tenderlovemaking.com", entry.namespaces["xmlns:tlm"]
end
end
describe "given the new document is empty" do
it "adds the node to the new document" do
doc1 = Nokogiri::XML.parse("<value>3</value>")
doc2 = Nokogiri::XML::Document.new
node = doc1.at_xpath("//value")
node.remove
doc2.add_child(node)
assert_match(%r{<value>3</value>}, doc2.to_xml)
end
end
describe "given a parent node with a default namespace" do
before do
@doc = Nokogiri::XML(<<~eoxml)
<root xmlns="http://tenderlovemaking.com/">
<first>
</first>
</root>
eoxml
end
it "inserts a node that inherits the default namespace" do
assert node = @doc.at("//xmlns:first")
child = Nokogiri::XML::Node.new("second", @doc)
node.add_child(child)
assert @doc.at("//xmlns:second")
end
describe "and a child node was added to a new doc with the a different namespace using the same prefix" do
before do
@doc = Nokogiri::XML(%{<root xmlns:bar="http://tenderlovemaking.com/"><bar:first/></root>})
new_doc = Nokogiri::XML(%{<newroot xmlns:bar="http://flavorjon.es/"/>})
assert node = @doc.at("//tenderlove:first", tenderlove: "http://tenderlovemaking.com/")
new_doc.root.add_child(node)
@doc = new_doc
end
it "serializes the doc with the proper default namespace" do
assert_match(%r{<bar:first\ xmlns:bar="http://tenderlovemaking.com/"/>}, @doc.to_xml)
end
end
describe "and a child node was added to a new doc with the same default namespaces" do
before do
new_doc = Nokogiri::XML(%{<newroot xmlns="http://tenderlovemaking.com/"/>})
assert node = @doc.at("//tenderlove:first", tenderlove: "http://tenderlovemaking.com/")
new_doc.root.add_child(node)
@doc = new_doc
end
it "serializes the doc with the proper default namespace" do
assert_match(/<first>/, @doc.to_xml)
end
end
describe "and a child node was added to a new doc without any default namespaces" do
before do
new_doc = Nokogiri::XML("<newroot/>")
assert node = @doc.at("//tenderlove:first", tenderlove: "http://tenderlovemaking.com/")
new_doc.root.add_child(node)
@doc = new_doc
end
it "serializes the doc with the proper default namespace" do
assert_match(%r{<first xmlns=\"http://tenderlovemaking.com/\">}, @doc.to_xml)
end
end
describe "and a child node became the root of a new doc" do
before do
new_doc = Nokogiri::XML::Document.new
assert node = @doc.at("//tenderlove:first", tenderlove: "http://tenderlovemaking.com/")
new_doc.root = node
@doc = new_doc
end
it "serializes the doc with the proper default namespace" do
assert_match(%r{<first xmlns=\"http://tenderlovemaking.com/\">}, @doc.to_xml)
end
end
describe "and a child node has a namespaced attribute" do
# https://github.com/sparklemotion/nokogiri/issues/2228
it "should not lose attribute namespace" do
source_doc = Nokogiri::XML::Document.parse(<<~EOXML)
<pre1:root xmlns:pre1="ns1" xmlns:pre2="ns2">
<pre1:child pre2:attr="attrval">
</pre1:root>
EOXML
assert(source_node = source_doc.at_xpath("//pre1:child", {"pre1" => "ns1"}))
assert_equal("attrval", source_node.attribute_with_ns("attr", "ns2")&.value)
dest_doc = Nokogiri::XML::Document.parse(<<~EOXML)
<pre1:root xmlns:pre1="ns1" xmlns:pre2="ns2">
</pre1:root>
EOXML
assert(dest_node = dest_doc.at_xpath("//pre1:root", {"pre1" => "ns1"}))
inserted = dest_node.add_child(source_node)
assert_equal("attrval", inserted.attribute_with_ns("attr", "ns2")&.value,
"inserted node attribute should be namespaced")
end
end
end
describe "given a parent node with a default and non-default namespace" do
before do
@doc = Nokogiri::XML(<<~eoxml)
<root xmlns="http://tenderlovemaking.com/" xmlns:foo="http://flavorjon.es/">
<first>
</first>
</root>
eoxml
assert @node = @doc.at("//xmlns:first")
@child = Nokogiri::XML::Node.new("second", @doc)
end
describe "and a child with a namespace matching the parent's default namespace" do
describe "and as the default prefix" do
before do
@ns = @child.add_namespace(nil, "http://tenderlovemaking.com/")
@child.namespace = @ns
end
it "inserts a node that inherits the parent's default namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://tenderlovemaking.com/")
assert reparented.namespace_definitions.empty?
assert_equal @doc.root.namespace, reparented.namespace
assert_equal(
{
"xmlns" => "http://tenderlovemaking.com/",
"xmlns:foo" => "http://flavorjon.es/",
},
reparented.namespaces
)
end
end
describe "but with a different prefix" do
before do
@ns = @child.add_namespace("baz", "http://tenderlovemaking.com/")
@child.namespace = @ns
end
it "inserts a node that uses its own namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://tenderlovemaking.com/")
assert reparented.namespace_definitions.include?(@ns)
assert_equal @ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://tenderlovemaking.com/",
"xmlns:foo" => "http://flavorjon.es/",
"xmlns:baz" => "http://tenderlovemaking.com/",
},
reparented.namespaces
)
end
end
end
describe "and a child with a namespace matching the parent's non-default namespace" do
before do
@root_ns = @doc.root.namespace_definitions.detect { |x| x.prefix == "foo" }
end
describe "set by #namespace=" do
before do
@child.namespace = @root_ns
end
it "inserts a node that inherits the matching parent namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://flavorjon.es/")
assert reparented.namespace_definitions.empty?
assert_equal @root_ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://tenderlovemaking.com/",
"xmlns:foo" => "http://flavorjon.es/",
},
reparented.namespaces
)
end
end
describe "with the same prefix" do
before do
@ns = @child.add_namespace("foo", "http://flavorjon.es/")
@child.namespace = @ns
end
it "inserts a node that uses the parent's namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://flavorjon.es/")
assert reparented.namespace_definitions.empty?
assert_equal @root_ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://tenderlovemaking.com/",
"xmlns:foo" => "http://flavorjon.es/",
},
reparented.namespaces
)
end
end
describe "as the default prefix" do
before do
@ns = @child.add_namespace(nil, "http://flavorjon.es/")
@child.namespace = @ns
end
it "inserts a node that keeps its namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://flavorjon.es/")
assert reparented.namespace_definitions.include?(@ns)
assert_equal @ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://flavorjon.es/",
"xmlns:foo" => "http://flavorjon.es/",
},
reparented.namespaces
)
end
end
describe "but with a different prefix" do
before do
@ns = @child.add_namespace("baz", "http://flavorjon.es/")
@child.namespace = @ns
end
it "inserts a node that keeps its namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://flavorjon.es/")
assert reparented.namespace_definitions.include?(@ns)
assert_equal @ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://tenderlovemaking.com/",
"xmlns:foo" => "http://flavorjon.es/",
"xmlns:baz" => "http://flavorjon.es/",
},
reparented.namespaces
)
end
end
end
describe "and a child node with a default namespace not matching the parent's default namespace and a namespace matching a parent namespace but with a different prefix" do
before do
@ns = @child.add_namespace(nil, "http://example.org/")
@child.namespace = @ns
@ns2 = @child.add_namespace("baz", "http://tenderlovemaking.com/")
end
it "inserts a node that keeps its namespace" do
@node.add_child(@child)
assert reparented = @doc.at("//bar:second", "bar" => "http://example.org/")
assert reparented.namespace_definitions.include?(@ns)
assert reparented.namespace_definitions.include?(@ns2)
assert_equal @ns, reparented.namespace
assert_equal(
{
"xmlns" => "http://example.org/",
"xmlns:foo" => "http://flavorjon.es/",
"xmlns:baz" => "http://tenderlovemaking.com/",
},
reparented.namespaces
)
end
end
end
end
describe "#add_previous_sibling" do
it "should not merge text nodes during the operation" do
xml = Nokogiri::XML(%(<root>text node</root>))
replacee = xml.root.children.first
replacee.add_previous_sibling("foo <p></p> bar")
assert_equal "foo <p></p> bartext node", xml.root.children.to_html
end
it "should remove the child node after the operation" do
fragment = Nokogiri::HTML::DocumentFragment.parse("a<a>b</a>")
node = fragment.children.last
node.add_previous_sibling(node.children)
assert_empty node.children, "should have no childrens"
end
describe "with a text node before" do
it "should not defensively dup the 'before' text node" do
xml = Nokogiri::XML(%(<root>before<p></p>after</root>))
pivot = xml.at_css("p")
before = xml.root.children.first
after = xml.root.children.last
pivot.add_previous_sibling("x")
assert_equal "after", after.content
assert !after.parent.nil?, "unrelated node should not be affected"
assert_equal "before", before.content
assert !before.parent.nil?, "no need to reparent"
end
end
end
describe "#add_next_sibling" do
it "should not merge text nodes during the operation" do
xml = Nokogiri::XML(%(<root>text node</root>))
replacee = xml.root.children.first
replacee.add_next_sibling("foo <p></p> bar")
assert_equal "text nodefoo <p></p> bar", xml.root.children.to_html
end
it "should append a text node before an existing non text node" do
xml = Nokogiri::XML(%(<root><p>foo</p><p>bar</p></root>))
p = xml.at_css("p")
p.add_next_sibling("a")
assert_equal "<root><p>foo</p>a<p>bar</p></root>", xml.root.to_s
end
it "should append a text node before an existing text node" do
xml = Nokogiri::XML(%(<root><p>foo</p>after</root>))
p = xml.at_css("p")
p.add_next_sibling("x")
assert_equal "<root><p>foo</p>xafter</root>", xml.root.to_s
end
describe "with a text node after" do
it "should not defensively dup the 'after' text node" do
xml = Nokogiri::XML(%(<root>before<p></p>after</root>))
pivot = xml.at_css("p")
before = xml.root.children.first
after = xml.root.children.last
pivot.add_next_sibling("x")
assert_equal "before", before.content
assert !before.parent.nil?, "unrelated node should not be affected"
assert_equal "after", after.content
assert !after.parent.nil?
end
end
end
describe "#replace" do
describe "a text node with a text node" do
it "should not merge text nodes during the operation" do
xml = Nokogiri::XML(%(<root>text node</root>))
replacee = xml.root.children.first
replacee.replace("new text node")
assert_equal "new text node", xml.root.children.first.content
end
end
it "can replace with a comment node" do
doc = Nokogiri::XML(%{<parent><child>text})
replacee = doc.at_css("child")
replacer = doc.create_comment("<b>text</b>")
replacee.replace(replacer)
assert_equal 1, doc.root.children.length
assert_equal replacer, doc.root.children.first
end
it "can replace with a CDATA node" do
doc = Nokogiri::XML(%{<parent><child>text})
replacee = doc.at_css("child")
replacer = doc.create_cdata("<b>text</b>")
replacee.replace(replacer)
assert_equal 1, doc.root.children.length
assert_equal replacer, doc.root.children.first
end
describe "when a document has a default namespace" do
before do
@fruits = Nokogiri::XML(<<~eoxml)
<fruit xmlns="http://fruits.org">
<apple />
</fruit>
eoxml
end
it "inserts a node with default namespaces" do
apple = @fruits.css("apple").first
orange = Nokogiri::XML::Node.new("orange", @fruits)
apple.replace(orange)
assert_equal orange, @fruits.css("orange").first
end
end
end
describe "unlinking a node and then reparenting it" do
it "should not cause illegal memory access during GC" do
skip_unless_libxml2("valgrind tests should only run with libxml2")
refute_valgrind_errors do
# see http://github.com/sparklemotion/nokogiri/issues#issue/22
doc = Nokogiri::XML(<<~EOHTML)
<root>
<a>
<b/>
<c/>
</a>
</root>
EOHTML
assert root = doc.at("root")
assert a = root.at("a")
assert b = a.at("b")
assert c = a.at("c")
a.add_next_sibling(b.unlink)
c.unlink
end
end
end
describe "replace-merging text nodes" do
[
["<root>a<br/></root>", "afoo"],
["<root>a<br/>b</root>", "afoob"],
["<root><br/>b</root>", "foob"],
].each do |xml, result|
it "doesn't blow up on #{xml}" do
doc = Nokogiri::XML.parse(xml)
saved_nodes = doc.root.children
doc.at_xpath("/root/br").replace(Nokogiri::XML::Text.new("foo", doc))
saved_nodes.each(&:inspect) # try to cause a crash
assert_equal result, doc.at_xpath("/root/text()").inner_text
end
end
end
describe "reparenting and preserving a reference to the original ns" do
it "should not cause illegal memory access" do
# this test will only cause a failure in valgrind. it
# drives out the reason why we can't call xmlFreeNs in
# relink_namespace and instead have to root the nsdef.
doc = Nokogiri::XML('<root xmlns="http://flavorjon.es/"><envelope /></root>')
elem = doc.create_element("package", { "xmlns" => "http://flavorjon.es/" })
ns = elem.namespace_definitions
doc.at_css("envelope").add_child(elem)
ns.inspect
end
end
describe "reparenting into another document" do
it "correctly sets default namespace of a reparented node" do
# issue described in #391
# thanks to Nick Canzoneri @nickcanz for this test case!
source_doc = Nokogiri::XML(<<~EOX)
<?xml version="1.0" encoding="utf-8"?>
<Wix xmlns="http://schemas.microsoft.com/wix/2006/wi">
<Product>
<Package />
<Directory Id="TARGETDIR" Name="SourceDir">
<Component>
<File />
</Component>
</Directory>
</Product>
</Wix>
EOX
dest_doc = Nokogiri::XML(<<~EOX)
<?xml version="1.0" encoding="utf-8"?>
<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi'>
<Fragment Id='MSIComponents'>
<DirectoryRef Id='InstallDir'>
</DirectoryRef>
</Fragment>
</Wix>
EOX
stuff = source_doc.at_css("Directory[Id='TARGETDIR']")
insert_point = dest_doc.at_css("DirectoryRef[Id='InstallDir']")
insert_point.children = stuff.children
assert_no_match(/default:/, insert_point.children.to_xml)
assert_match(/<Component>/, insert_point.children.to_xml)
end
end
end
end
end
end