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# frozen_string_literal: true
require "helper"
describe "experimental pattern matching" do
describe Nokogiri::XML::Namespace do
describe "#deconstruct_keys" do
let(:ns_default) { "http://nokogiri.org/ns/default" }
let(:ns_noko) { "http://nokogiri.org/ns/noko" }
let(:xmldoc) do
Nokogiri::XML::Document.parse(<<~XML)
<root xmlns="#{ns_default}" xmlns:noko="#{ns_noko}">
<child1 foo="abc" noko:bar="def" />
<noko:child2 foo="qwe" noko:bar="rty" />
</root>
XML
end
let(:child1) { xmldoc.at_xpath("//a:child1", { "a" => ns_default }) }
let(:child2) { xmldoc.at_xpath("//b:child2", { "b" => ns_noko }) }
it "supports :href" do
href = child1.namespace.deconstruct_keys([:href])[:href]
assert_instance_of(String, href)
assert_equal(ns_default, href)
href = child2.namespace.deconstruct_keys([:href])[:href]
assert_instance_of(String, href)
assert_equal(ns_noko, href)
end
it "supports :prefix" do
prefix = child1.namespace.deconstruct_keys([:prefix])[:prefix]
assert_nil(prefix)
prefix = child2.namespace.deconstruct_keys([:prefix])[:prefix]
assert_instance_of(String, prefix)
assert_equal("noko", prefix)
end
end
end
describe Nokogiri::XML::Attr do
describe "#deconstruct_keys" do
let(:ns_default) { "http://nokogiri.org/ns/default" }
let(:ns_noko) { "http://nokogiri.org/ns/noko" }
let(:xmldoc) do
Nokogiri::XML::Document.parse(<<~XML)
<root xmlns="#{ns_default}" xmlns:noko="#{ns_noko}">
<child1 foo="abc" noko:bar="def" />
</root>
XML
end
let(:child1) { xmldoc.at_xpath("//a:child1", { "a" => ns_default }) }
let(:child1_attr_foo) { xmldoc.at_xpath("//a:child1/@foo", { "a" => ns_default }) }
let(:child1_attr_bar) { xmldoc.at_xpath("//a:child1/@b:bar", { "a" => ns_default, "b" => ns_noko }) }
it "supports :name" do
name = child1_attr_foo.deconstruct_keys([:name])[:name]
assert_instance_of(String, name)
assert_equal("foo", name)
name = child1_attr_bar.deconstruct_keys([:name])[:name]
assert_instance_of(String, name)
assert_equal("bar", name)
end
it "supports :value" do
value = child1_attr_foo.deconstruct_keys([:value])[:value]
assert_instance_of(String, value)
assert_equal("abc", value)
value = child1_attr_bar.deconstruct_keys([:value])[:value]
assert_instance_of(String, value)
assert_equal("def", value)
end
it "supports :namespace" do
namespace = child1_attr_foo.deconstruct_keys([:namespace])[:namespace]
assert_nil(namespace)
namespace = child1_attr_bar.deconstruct_keys([:namespace])[:namespace]
assert_instance_of(Nokogiri::XML::Namespace, namespace)
assert_equal(child1_attr_bar.namespace, namespace)
end
end
end
describe Nokogiri::XML::NodeSet do
describe "#deconstruct" do
it "returns an array of the contained nodes" do
doc = Nokogiri::XML::Document.parse(<<~XML)
<root><child1/><child2/><child3/></root>
XML
actual = doc.root.children.deconstruct
expected = doc.root.children.to_a
assert_instance_of(Array, actual)
assert_equal(3, actual.length)
assert_equal(expected, actual)
end
end
end
describe Nokogiri::XML::Node do
describe "#deconstruct_keys" do
let(:ns_default) { "http://nokogiri.org/ns/default" }
let(:ns_noko) { "http://nokogiri.org/ns/noko" }
let(:xmldoc) do
Nokogiri::XML::Document.parse(<<~XML)
<root xmlns="#{ns_default}" xmlns:noko="#{ns_noko}">
<child1 foo="abc" noko:bar="def" />
<noko:child2 foo="qwe" noko:bar="rty" />
<child3>
<grandchild1 size="small">hello & goodbye</grandchild1>
<grandchild2 size="large"><!-- shhh --></grandchild2>
</child3>
</root>
XML
end
let(:child1) { xmldoc.at_xpath("//a:child1", { "a" => ns_default }) }
let(:child2) { xmldoc.at_xpath("//b:child2", { "b" => ns_noko }) }
let(:child3) { xmldoc.at_xpath("//a:child3", { "a" => ns_default }) }
let(:grandchild1) { xmldoc.at_xpath("//a:grandchild1", { "a" => ns_default }) }
let(:grandchild2) { xmldoc.at_xpath("//a:grandchild2", { "a" => ns_default }) }
it "supports :name" do
name = child1.deconstruct_keys([:name])[:name]
assert_instance_of(String, name)
assert_equal("child1", name)
name = child2.deconstruct_keys([:name])[:name]
assert_instance_of(String, name)
assert_equal("child2", name)
end
it "supports :attributes" do
attributes = child1.deconstruct_keys([:attributes])[:attributes]
assert_instance_of(Array, attributes)
assert_equal(2, attributes.length)
attributes.each { |attr| assert_instance_of(Nokogiri::XML::Attr, attr) }
assert_equal(child1.attribute_nodes, attributes)
end
it "supports :namespace" do
namespace = child1.deconstruct_keys([:namespace])[:namespace]
assert_instance_of(Nokogiri::XML::Namespace, namespace)
assert_equal(child1.namespace, namespace)
namespace = child2.deconstruct_keys([:namespace])[:namespace]
assert_instance_of(Nokogiri::XML::Namespace, namespace)
assert_equal(child2.namespace, namespace)
end
it "supports :children" do
children = child3.deconstruct_keys([:children])[:children]
assert_instance_of(Nokogiri::XML::NodeSet, children)
assert_equal(5, children.length) # includes whitespace text nodes!
assert_equal(child3.children, children)
end
it "supports :elements" do
elements = child3.deconstruct_keys([:elements])[:elements]
assert_instance_of(Nokogiri::XML::NodeSet, elements)
assert_equal(2, elements.length)
assert_equal(["grandchild1", "grandchild2"], elements.map(&:name))
assert_equal(child3.elements, elements)
end
it "supports :content" do
content = grandchild1.deconstruct_keys([:content])[:content]
assert_instance_of(String, content)
assert_equal("hello & goodbye", content)
content = grandchild2.deconstruct_keys([:content])[:content]
assert_instance_of(String, content)
assert_equal("", content)
end
it "supports :inner_html" do
inner_html = grandchild1.deconstruct_keys([:inner_html])[:inner_html]
assert_instance_of(String, inner_html)
assert_equal("hello & goodbye", inner_html)
inner_html = grandchild2.deconstruct_keys([:inner_html])[:inner_html]
assert_instance_of(String, inner_html)
assert_equal("<!-- shhh -->", inner_html)
end
end
end
describe Nokogiri::XML::DocumentFragment do
describe "#deconstruct" do
it "returns an array of the contained nodes" do
fragment = Nokogiri::XML::DocumentFragment.parse(<<~XML)
<child1/><child2/><child3/>
XML
actual = fragment.deconstruct
expected = fragment.children.to_a
assert_instance_of(Array, actual)
assert_equal(4, actual.length) # three elements and a whitespace text node
assert_equal(expected, actual)
end
end
end
describe Nokogiri::XML::Document do
describe "#deconstruct_keys" do
it "supports :root" do
doc = Nokogiri::XML::Document.parse(<<~XML)
<root><child1/><child2/><child3/></root>
XML
root = doc.deconstruct_keys([:root])[:root]
assert_instance_of(Nokogiri::XML::Element, root)
assert_equal(doc.root, root)
end
end
end
unless RUBY_ENGINE == "truffleruby" # https://github.com/oracle/truffleruby/issues/3589
describe "actual pattern matching" do
let(:ns_default) { "http://nokogiri.org/ns/default" }
let(:ns_noko) { "http://nokogiri.org/ns/noko" }
let(:doc_xml) { <<~XML }
<root xmlns="#{ns_default}" xmlns:noko="#{ns_noko}">
<child1 foo="abc" noko:bar="def" />
<noko:child2 foo="qwe" noko:bar="rty" />
<child3>
<grandchild1 size="small">hello & goodbye</grandchild1>
<grandchild2 size="large"><!-- shhh --></grandchild2>
</child3>
</root>
XML
let(:frag_xml) { <<~XML }
<child1 /><child2 foo="bar" qwe="rty" /><child3 />
XML
let(:frag) { Nokogiri::XML::DocumentFragment.parse(frag_xml) }
let(:doc) { Nokogiri::XML::Document.parse(doc_xml) }
describe "Document" do
it "finds nodes" do
assert_pattern do
doc => { root: { children: [*, { name: "child3", children: grandchildren }, *] } }
expected = doc.at_css("child3").children
assert_equal(expected, grandchildren)
end
end
it "finds nodes with namespaces" do
ns = ns_default
assert_pattern do
doc => { root: { children: [*, { namespace: { href: ^ns }, name: "child3" }, *] } }
end
end
it "finds node contents" do
assert_pattern do
doc => { root: { children: [*, { children: [*, {name: "grandchild1", content: }, *] }, *] } }
assert_equal("hello & goodbye", content)
end
end
it "finds node contents by attribute" do
assert_pattern do
doc => { root: { children: [*, { children: [*, {attributes: [*, {name: "size", value: "small"}, *], content: }, *] }, *] } }
assert_equal("hello & goodbye", content)
end
end
end
describe "Fragment" do
it "finds nodes" do
assert_pattern do
frag => [{name: "child1"}, {name: "child2"}, {name: "child3"}, {content: "\n"}]
end
end
it "finds attributes" do
assert_pattern do
frag => [*, {name: "child2", attributes: }, *]
assert_equal("foo", attributes.first.name)
end
end
end
describe "Node" do
it "finds nodes" do
assert_pattern do
doc.root => { elements: [{name: "child1"}, {name: "child2"}, {name: "child3"}] }
end
end
end
end
end
end
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