127 lines
3 KiB
Go
127 lines
3 KiB
Go
package htmlquery
|
|
|
|
import (
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/antchfx/xpath"
|
|
"golang.org/x/net/html"
|
|
)
|
|
|
|
const htmlSample = `<!DOCTYPE html><html lang="en-US">
|
|
<head>
|
|
<title>Hello,World!</title>
|
|
</head>
|
|
<body>
|
|
<div class="container">
|
|
<header>
|
|
<!-- Logo -->
|
|
<h1>City Gallery</h1>
|
|
</header>
|
|
<nav>
|
|
<ul>
|
|
<li><a href="/London">London</a></li>
|
|
<li><a href="/Paris">Paris</a></li>
|
|
<li><a href="/Tokyo">Tokyo</a></li>
|
|
</ul>
|
|
</nav>
|
|
<article>
|
|
<h1>London</h1>
|
|
<img src="pic_mountain.jpg" alt="Mountain View" style="width:304px;height:228px;">
|
|
<p>London is the capital city of England. It is the most populous city in the United Kingdom, with a metropolitan area of over 13 million inhabitants.</p>
|
|
<p>Standing on the River Thames, London has been a major settlement for two millennia, its history going back to its founding by the Romans, who named it Londinium.</p>
|
|
</article>
|
|
<footer>Copyright © W3Schools.com</footer>
|
|
</div>
|
|
</body>
|
|
</html>
|
|
`
|
|
|
|
var testDoc = loadHTML(htmlSample)
|
|
|
|
func TestHttpLoad(t *testing.T) {
|
|
doc, err := LoadURL("http://www.bing.com")
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if doc == nil {
|
|
t.Fatal("doc is nil")
|
|
}
|
|
}
|
|
|
|
func TestNavigator(t *testing.T) {
|
|
top := FindOne(testDoc, "//html")
|
|
nav := &NodeNavigator{curr: top, root: top, attr: -1}
|
|
nav.MoveToChild() // HEAD
|
|
nav.MoveToNext()
|
|
if nav.NodeType() != xpath.TextNode {
|
|
t.Fatalf("expectd node type is TextNode,but got %vs", nav.NodeType())
|
|
}
|
|
nav.MoveToNext() // <BODY>
|
|
if nav.Value() != InnerText(FindOne(testDoc, "//body")) {
|
|
t.Fatal("body not equal")
|
|
}
|
|
nav.MoveToPrevious() //
|
|
nav.MoveToParent() //<HTML>
|
|
if nav.curr != top {
|
|
t.Fatal("current node is not html node")
|
|
}
|
|
nav.MoveToNextAttribute()
|
|
if nav.LocalName() != "lang" {
|
|
t.Fatal("node not move to lang attribute")
|
|
}
|
|
|
|
nav.MoveToParent()
|
|
nav.MoveToFirst() // <!DOCTYPE html>
|
|
if nav.curr.Type != html.DoctypeNode {
|
|
t.Fatalf("expected node type is DoctypeNode,but got %d", nav.curr.Type)
|
|
}
|
|
}
|
|
|
|
func TestXPath(t *testing.T) {
|
|
node := FindOne(testDoc, "//html")
|
|
if SelectAttr(node, "lang") != "en-US" {
|
|
t.Fatal("//html[@lang] != en-Us")
|
|
}
|
|
|
|
var c int
|
|
FindEach(testDoc, "//li", func(i int, node *html.Node) {
|
|
c++
|
|
})
|
|
if c != len(Find(testDoc, "//li")) {
|
|
t.Fatal("li node count != 3")
|
|
}
|
|
node = FindOne(testDoc, "//header")
|
|
if strings.Index(InnerText(node), "Logo") > 0 {
|
|
t.Fatal("InnerText() have comment node text")
|
|
}
|
|
if strings.Index(OutputHTML(node, true), "Logo") == -1 {
|
|
t.Fatal("OutputHTML() shoud have comment node text")
|
|
}
|
|
link := FindOne(testDoc, "//a[1]/@href")
|
|
if link == nil {
|
|
t.Fatal("link is nil")
|
|
}
|
|
if v := InnerText(link); v != "/London" {
|
|
t.Fatalf("expect value is /London, but got %s", v)
|
|
}
|
|
|
|
}
|
|
|
|
func TestXPathCdUp(t *testing.T) {
|
|
doc := loadHTML(`<html><b attr="1"></b></html>`)
|
|
node := FindOne(doc, "//b/@attr/..")
|
|
t.Logf("node = %#v", node)
|
|
if node == nil || node.Data != "b" {
|
|
t.Fatal("//b/@id/.. != <b></b>")
|
|
}
|
|
}
|
|
|
|
func loadHTML(str string) *html.Node {
|
|
node, err := Parse(strings.NewReader(str))
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
return node
|
|
}
|