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require "spec"
require "xml"
private def doc
XML.parse(%(\
<?xml version='1.0' encoding='UTF-8'?>
<people>
<person id="1">
<name>John</name>
</person>
<person id="2">
<name>Peter</name>
</person>
</people>
))
end
module XML
describe XPathContext do
it "finds nodes" do
doc = doc()
nodes = doc.xpath("//people/person").as(NodeSet)
nodes.size.should eq(2)
nodes[0].name.should eq("person")
nodes[0]["id"].should eq("1")
nodes[1].name.should eq("person")
nodes[1]["id"].should eq("2")
nodes = doc.xpath_nodes("//people/person")
nodes.size.should eq(2)
end
it "finds string" do
doc = doc()
id = doc.xpath("string(//people/person[1]/@id)").as(String)
id.should eq("1")
id = doc.xpath_string("string(//people/person[1]/@id)")
id.should eq("1")
end
it "finds number" do
doc = doc()
count = doc.xpath("count(//people/person)").as(Float64)
count.should eq(2)
count = doc.xpath_float("count(//people/person)")
count.should eq(2)
end
it "finds boolean" do
doc = doc()
id = doc.xpath("boolean(//people/person[1]/@id)").as(Bool)
id.should be_true
id = doc.xpath_bool("boolean(//people/person[1]/@id)")
id.should be_true
end
it "raises on invalid xpath" do
expect_raises XML::Error do
doc = doc()
doc.xpath("coco()")
end
end
it "returns nil with invalid xpath" do
doc = doc()
doc.xpath_node("//invalid").should be_nil
end
it "finds with explicit namespace" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">
</feed>
))
nodes = doc.xpath("//atom:feed", namespaces: {"atom" => "http://www.w3.org/2005/Atom"}).as(NodeSet)
nodes.size.should eq(1)
nodes[0].name.should eq("feed")
ns = nodes[0].namespace.not_nil!
ns.href.should eq("http://www.w3.org/2005/Atom")
ns.prefix.should be_nil
end
it "finds with implicit (root) namespaces" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<openSearch:feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">
<openSearch:something>
</openSearch:something>
</openSearch:feed>
))
nodes = doc.xpath("//openSearch:feed/openSearch:something").as(NodeSet)
nodes.size.should eq(1)
nodes[0].name.should eq("something")
ns = nodes[0].namespace.not_nil!
ns.href.should eq("http://a9.com/-/spec/opensearchrss/1.0/")
ns.prefix.should eq("openSearch")
end
it "finds with root namespaces" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">
</feed>
))
nodes = doc.xpath("//xmlns:feed", namespaces: doc.root.not_nil!.namespaces).as(NodeSet)
nodes.size.should eq(1)
nodes[0].name.should eq("feed")
ns = nodes[0].namespace.not_nil!
ns.href.should eq("http://www.w3.org/2005/Atom")
ns.prefix.should be_nil
end
it "finds with root namespaces (using prefix)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<openSearch:feed xmlns="http://www.w3.org/2005/Atom" xmlns:openSearch="http://a9.com/-/spec/opensearchrss/1.0/">
</openSearch:feed>
))
nodes = doc.xpath("//openSearch:feed", namespaces: doc.root.not_nil!.namespaces).as(NodeSet)
nodes.size.should eq(1)
nodes[0].name.should eq("feed")
ns = nodes[0].namespace.not_nil!
ns.href.should eq("http://a9.com/-/spec/opensearchrss/1.0/")
ns.prefix.should eq("openSearch")
end
it "finds with variable binding" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
nodes = doc.xpath("//feed/person[@id=$value]", variables: {"value" => 2}).as(NodeSet)
nodes.size.should eq(1)
nodes[0]["id"].should eq("2")
end
it "finds with variable binding (bool)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
result = doc.xpath_bool("count(//feed/person[@id=$value]) = 1", variables: {"value" => 2})
result.should be_true
end
it "finds with variable binding (float)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
result = doc.xpath_float("count(//feed/person[@id=$value])", variables: {"value" => 2})
result.should eq(1.0)
end
it "finds with variable binding (nodes)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
nodes = doc.xpath_nodes("//feed/person[@id=$value]", variables: {"value" => 2})
nodes.size.should eq(1)
nodes[0]["id"].should eq("2")
end
it "finds with variable binding (node)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
node = doc.xpath_node("//feed/person[@id=$value]", variables: {"value" => 2}).not_nil!
node["id"].should eq("2")
end
it "finds with variable binding (string)" do
doc = XML.parse(%(\
<?xml version="1.0" encoding="UTF-8"?>
<feed>
<person id="1"/>
<person id="2"/>
</feed>
))
result = doc.xpath_string("string(//feed/person[@id=$value]/@id)", variables: {"value" => 2})
result.should eq("2")
end
it "NodeSet#to_s" do
doc = doc()
doc.xpath("//people/person").to_s
end
end
end
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