Chained xpaths are searching from root level #237
Description
Description:
All node xpaths are calling for root document level, not for node. For example, this test will fail.
func testInnerXpath() {
let input = """
<html>
<head>
<title>test title</title>
</head>
<body>
<div id="1"><div><h1>test header 1</h1></div></div>
<div id="2"><div><h1>test header 2</h1></div></div>
</body>
</html>
"""
do {
let doc = try HTML(html: input, encoding: .utf8)
//all this asserts will fail:
XCTAssertNil(doc.at_xpath("//head")?.at_xpath("//h1")?.toHTML)
XCTAssertNil(doc.at_xpath("//head")?.at_xpath("//body")?.toHTML)
XCTAssertNil(doc.at_xpath("//body")?.at_xpath("//title")?.toHTML)
XCTAssertEqual(doc.at_xpath("//body/div[@id='2']")?.at_xpath("//h1")?.text, "test header 2")
//only this assert is ok, passes:
XCTAssertEqual(doc.at_xpath("//body/div[@id='2']//h1")?.text, "test header 2")
} catch {
XCTFail("Abnormal test data")
}
}Is it bug or feature?
I've started implementing fix of this problem I'm casting xmlNodePtr to xmlDocPtr and initing xmlXPathNewContext with this casted object and then all xpaths starting work properly.