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scrape_test.go
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scrape_test.go
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package scrape
import (
"strings"
"testing"
"golang.org/x/net/html"
"golang.org/x/net/html/atom"
)
const testHTML = `
<html>
<body>
<div class="bigbird">
<div class="container">
<div class="bigbird">
Hi, I'm Big Bird
</div>
</div>
</div>
</body>
</html>
`
const testSiblingHTML = `
<html>
<body>
<div>
<p id="a" class="t1">
aaa
<br/>
<a class="t3">test anchor</a>
</p>
<p id="b" class="t2">bbb
<a class="t1">another anchor</a>
</p>
<p id="c" class="t3">ccc</p>
<p id="d" class="t4">ddd</p>
</div>
</body>
</html>
`
func TestFindAllNestedReturnsNestedMatchingNodes(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testHTML))
allResults := FindAllNested(node, ByClass("bigbird"))
if len(allResults) != 2 {
t.Error("Expected 2 nodes returned but only found", len(allResults))
}
}
func TestFindAllDoesNotReturnNestedMatchingNodes(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testHTML))
allResults := FindAll(node, ByClass("bigbird"))
if len(allResults) != 1 {
t.Error("Expected 1 node returned but found", len(allResults))
}
}
func TestFindNextSiblingReturnsMatchingNode(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testSiblingHTML))
startingPoint, ok := Find(node, ById("a"))
if !ok {
t.Error("Expected to find 'a' P node")
} else {
t3Node, ok := FindNextSibling(startingPoint, ByClass("t3"))
if !ok || t3Node == nil {
t.Error("Expected to find a node")
} else {
if t3Node.DataAtom != atom.P || Text(t3Node) != "ccc" {
t.Error("Expected to find the third P node")
}
}
}
}
func TestFindNextSiblingDoesntReturnChildren(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testSiblingHTML))
startingPoint, ok := Find(node, ById("b"))
if !ok {
t.Error("Expected to find 'b' P node")
} else {
_, ok := FindNextSibling(startingPoint, ByClass("t1"))
if ok {
t.Error("Didn't expect to find a next sibling node")
}
}
}
func TestFindPrevSiblingReturnsMatchingNode(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testSiblingHTML))
startingPoint, ok := Find(node, ById("c"))
if !ok {
t.Error("Expected to find the 'c' P node")
} else {
t1Node, ok := FindPrevSibling(startingPoint, ByClass("t1"))
if !ok || t1Node == nil {
t.Error("Expected to find a node")
} else {
if t1Node.DataAtom != atom.P || Text(t1Node) != "aaa test anchor" {
t.Error("Expected to find the first P node")
}
}
}
}
func TestFindPrevSiblingDoesntReturnChildren(t *testing.T) {
node, _ := html.Parse(strings.NewReader(testSiblingHTML))
startingPoint, ok := Find(node, ById("c"))
if !ok {
t.Error("Expected to find 'c' P node")
} else {
_, ok := FindPrevSibling(startingPoint, ByClass("t3"))
if ok {
t.Error("Didn't expect to find a next sibling node")
}
}
}