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selector_test.go
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selector_test.go
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package cascadia
import (
"strings"
"testing"
"golang.org/x/net/html"
)
type selectorTest struct {
HTML, selector string
results []string
}
func nodeString(n *html.Node) string {
switch n.Type {
case html.TextNode:
return n.Data
case html.ElementNode:
return html.Token{
Type: html.StartTagToken,
Data: n.Data,
Attr: n.Attr,
}.String()
}
return ""
}
var selectorTests = []selectorTest{
{
`<body><address>This address...</address></body>`,
"address",
[]string{
"<address>",
},
},
{
`<html><head></head><body></body></html>`,
"*",
[]string{
"",
"<html>",
"<head>",
"<body>",
},
},
{
`<p id="foo"><p id="bar">`,
"#foo",
[]string{
`<p id="foo">`,
},
},
{
`<ul><li id="t1"><p id="t1">`,
"li#t1",
[]string{
`<li id="t1">`,
},
},
{
`<ol><li id="t4"><li id="t44">`,
"*#t4",
[]string{
`<li id="t4">`,
},
},
{
`<ul><li class="t1"><li class="t2">`,
".t1",
[]string{
`<li class="t1">`,
},
},
{
`<p class="t1 t2">`,
"p.t1",
[]string{
`<p class="t1 t2">`,
},
},
{
`<div class="test">`,
"div.teST",
[]string{},
},
{
`<p class="t1 t2">`,
".t1.fail",
[]string{},
},
{
`<p class="t1 t2">`,
"p.t1.t2",
[]string{
`<p class="t1 t2">`,
},
},
{
`<p><p title="title">`,
"p[title]",
[]string{
`<p title="title">`,
},
},
{
`<address><address title="foo"><address title="bar">`,
`address[title="foo"]`,
[]string{
`<address title="foo">`,
},
},
{
`<p title="tot foo bar">`,
`[ title ~= foo ]`,
[]string{
`<p title="tot foo bar">`,
},
},
{
`<p title="hello world">`,
`[title~="hello world"]`,
[]string{},
},
{
`<p lang="en"><p lang="en-gb"><p lang="enough"><p lang="fr-en">`,
`[lang|="en"]`,
[]string{
`<p lang="en">`,
`<p lang="en-gb">`,
},
},
{
`<p title="foobar"><p title="barfoo">`,
`[title^="foo"]`,
[]string{
`<p title="foobar">`,
},
},
{
`<p title="foobar"><p title="barfoo">`,
`[title$="bar"]`,
[]string{
`<p title="foobar">`,
},
},
{
`<p title="foobarufoo">`,
`[title*="bar"]`,
[]string{
`<p title="foobarufoo">`,
},
},
{
`<p class="t1 t2">`,
".t1:not(.t2)",
[]string{},
},
{
`<div class="t3">`,
`div:not(.t1)`,
[]string{
`<div class="t3">`,
},
},
{
`<ol><li id=1><li id=2><li id=3></ol>`,
`li:nth-child(odd)`,
[]string{
`<li id="1">`,
`<li id="3">`,
},
},
{
`<ol><li id=1><li id=2><li id=3></ol>`,
`li:nth-child(even)`,
[]string{
`<li id="2">`,
},
},
{
`<ol><li id=1><li id=2><li id=3></ol>`,
`li:nth-child(-n+2)`,
[]string{
`<li id="1">`,
`<li id="2">`,
},
},
{
`<ol><li id=1><li id=2><li id=3></ol>`,
`li:nth-child(3n+1)`,
[]string{
`<li id="1">`,
},
},
{
`<ol><li id=1><li id=2><li id=3><li id=4></ol>`,
`li:nth-last-child(odd)`,
[]string{
`<li id="2">`,
`<li id="4">`,
},
},
{
`<ol><li id=1><li id=2><li id=3><li id=4></ol>`,
`li:nth-last-child(even)`,
[]string{
`<li id="1">`,
`<li id="3">`,
},
},
{
`<ol><li id=1><li id=2><li id=3><li id=4></ol>`,
`li:nth-last-child(-n+2)`,
[]string{
`<li id="3">`,
`<li id="4">`,
},
},
{
`<ol><li id=1><li id=2><li id=3><li id=4></ol>`,
`li:nth-last-child(3n+1)`,
[]string{
`<li id="1">`,
`<li id="4">`,
},
},
{
`<p>some text <span id="1">and a span</span><span id="2"> and another</span></p>`,
`span:first-child`,
[]string{
`<span id="1">`,
},
},
{
`<span>a span</span> and some text`,
`span:last-child`,
[]string{
`<span>`,
},
},
{
`<address></address><p id=1><p id=2>`,
`p:nth-of-type(2)`,
[]string{
`<p id="2">`,
},
},
{
`<address></address><p id=1><p id=2></p><a>`,
`p:nth-last-of-type(2)`,
[]string{
`<p id="1">`,
},
},
{
`<address></address><p id=1><p id=2></p><a>`,
`p:last-of-type`,
[]string{
`<p id="2">`,
},
},
{
`<address></address><p id=1><p id=2></p><a>`,
`p:first-of-type`,
[]string{
`<p id="1">`,
},
},
{
`<div><p id="1"></p><a></a></div><div><p id="2"></p></div>`,
`p:only-child`,
[]string{
`<p id="2">`,
},
},
{
`<div><p id="1"></p><a></a></div><div><p id="2"></p><p id="3"></p></div>`,
`p:only-of-type`,
[]string{
`<p id="1">`,
},
},
{
`<p id="1"><!-- --><p id="2">Hello<p id="3"><span>`,
`:empty`,
[]string{
`<head>`,
`<p id="1">`,
`<span>`,
},
},
{
`<div><p id="1"><table><tr><td><p id="2"></table></div><p id="3">`,
`div p`,
[]string{
`<p id="1">`,
`<p id="2">`,
},
},
{
`<div><p id="1"><table><tr><td><p id="2"></table></div><p id="3">`,
`div table p`,
[]string{
`<p id="2">`,
},
},
{
`<div><p id="1"><div><p id="2"></div><table><tr><td><p id="3"></table></div>`,
`div > p`,
[]string{
`<p id="1">`,
`<p id="2">`,
},
},
{
`<p id="1"><p id="2"></p><address></address><p id="3">`,
`p ~ p`,
[]string{
`<p id="2">`,
`<p id="3">`,
},
},
{
`<p id="1"></p>
<!--comment-->
<p id="2"></p><address></address><p id="3">`,
`p + p`,
[]string{
`<p id="2">`,
},
},
{
`<ul><li></li><li></li></ul><p>`,
`li, p`,
[]string{
"<li>",
"<li>",
"<p>",
},
},
{
`<p id="1"><p id="2"></p><address></address><p id="3">`,
`p +/*This is a comment*/ p`,
[]string{
`<p id="2">`,
},
},
{
`<p>Text block that <span>wraps inner text</span> and continues</p>`,
`p:contains("that wraps")`,
[]string{
`<p>`,
},
},
{
`<p>Text block that <span>wraps inner text</span> and continues</p>`,
`p:containsOwn("that wraps")`,
[]string{},
},
{
`<p>Text block that <span>wraps inner text</span> and continues</p>`,
`:containsOwn("inner")`,
[]string{
`<span>`,
},
},
{
`<p>Text block that <span>wraps inner text</span> and continues</p>`,
`p:containsOwn("block")`,
[]string{
`<p>`,
},
},
{
`<div id="d1"><p id="p1"><span>text content</span></p></div><div id="d2"/>`,
`div:has(#p1)`,
[]string{
`<div id="d1">`,
},
},
{
`<div id="d1"><p id="p1"><span>contents 1</span></p></div>
<div id="d2"><p>contents <em>2</em></p></div>`,
`div:has(:containsOwn("2"))`,
[]string{
`<div id="d2">`,
},
},
{
`<body><div id="d1"><p id="p1"><span>contents 1</span></p></div>
<div id="d2"><p id="p2">contents <em>2</em></p></div></body>`,
`body :has(:containsOwn("2"))`,
[]string{
`<div id="d2">`,
`<p id="p2">`,
},
},
{
`<body><div id="d1"><p id="p1"><span>contents 1</span></p></div>
<div id="d2"><p id="p2">contents <em>2</em></p></div></body>`,
`body :haschild(:containsOwn("2"))`,
[]string{
`<p id="p2">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches([\d])`,
[]string{
`<p id="p1">`,
`<p id="p3">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches([a-z])`,
[]string{
`<p id="p2">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches([a-zA-Z])`,
[]string{
`<p id="p2">`,
`<p id="p3">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches([^\d])`,
[]string{
`<p id="p2">`,
`<p id="p3">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches(^(0|a))`,
[]string{
`<p id="p1">`,
`<p id="p2">`,
`<p id="p3">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:matches(^\d+$)`,
[]string{
`<p id="p1">`,
},
},
{
`<p id="p1">0123456789</p><p id="p2">abcdef</p><p id="p3">0123ABCD</p>`,
`p:not(:matches(^\d+$))`,
[]string{
`<p id="p2">`,
`<p id="p3">`,
},
},
{
`<div><p id="p1">01234<em>567</em>89</p><div>`,
`div :matchesOwn(^\d+$)`,
[]string{
`<p id="p1">`,
`<em>`,
},
},
{
`<ul>
<li><a id="a1" href="http://www.google.com/finance"/>
<li><a id="a2" href="http://finance.yahoo.com/"/>
<li><a id="a2" href="http://finance.untrusted.com/"/>
<li><a id="a3" href="https://www.google.com/news"/>
<li><a id="a4" href="http://news.yahoo.com"/>
</ul>`,
`[href#=(fina)]:not([href#=(\/\/[^\/]+untrusted)])`,
[]string{
`<a id="a1" href="http://www.google.com/finance">`,
`<a id="a2" href="http://finance.yahoo.com/">`,
},
},
{
`<ul>
<li><a id="a1" href="http://www.google.com/finance"/>
<li><a id="a2" href="http://finance.yahoo.com/"/>
<li><a id="a3" href="https://www.google.com/news"/>
<li><a id="a4" href="http://news.yahoo.com"/>
</ul>`,
`[href#=(^https:\/\/[^\/]*\/?news)]`,
[]string{
`<a id="a3" href="https://www.google.com/news">`,
},
},
}
func TestSelectors(t *testing.T) {
for _, test := range selectorTests {
s, err := Compile(test.selector)
if err != nil {
t.Errorf("error compiling %q: %s", test.selector, err)
continue
}
doc, err := html.Parse(strings.NewReader(test.HTML))
if err != nil {
t.Errorf("error parsing %q: %s", test.HTML, err)
continue
}
matches := s.MatchAll(doc)
if len(matches) != len(test.results) {
t.Errorf("wanted %d elements, got %d instead", len(test.results), len(matches))
continue
}
for i, m := range matches {
got := nodeString(m)
if got != test.results[i] {
t.Errorf("wanted %s, got %s instead", test.results[i], got)
}
}
firstMatch := s.MatchFirst(doc)
if len(test.results) == 0 {
if firstMatch != nil {
t.Errorf("MatchFirst: want nil, got %s", nodeString(firstMatch))
}
} else {
got := nodeString(firstMatch)
if got != test.results[0] {
t.Errorf("MatchFirst: want %s, got %s", test.results[0], got)
}
}
}
}