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package html // import "github.com/tdewolff/minify/html"
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/url"
"os"
"regexp"
"testing"
"github.com/tdewolff/minify/v2"
"github.com/tdewolff/minify/v2/css"
"github.com/tdewolff/minify/v2/js"
"github.com/tdewolff/minify/v2/json"
"github.com/tdewolff/minify/v2/svg"
"github.com/tdewolff/minify/v2/xml"
"github.com/tdewolff/test"
)
func TestHTML(t *testing.T) {
htmlTests := []struct {
html string
expected string
}{
{`html`, `html`},
{`<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML+RDFa 1.0//EN" "http://www.w3.org/MarkUp/DTD/xhtml-rdfa-1.dtd">`, `<!doctype html>`},
{`<!-- comment -->`, ``},
{`<style><!--\ncss\n--></style>`, `<style><!--\ncss\n--></style>`},
{`<style>&</style>`, `<style>&</style>`},
{`<html><head></head><body>x</body></html>`, `x`},
{`<meta http-equiv="content-type" content="text/html; charset=utf-8">`, `<meta charset=utf-8>`},
{`<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />`, `<meta charset=utf-8>`},
{`<meta http-equiv="Content-Security-Policy" content="default-src 'self'; img-src https://*; child-src 'none';">`, `<meta http-equiv=content-security-policy content="default-src 'self'; img-src https://*; child-src 'none';">`},
{`<meta name="keywords" content="a, b">`, `<meta name=keywords content=a,b>`},
{`<meta name="viewport" content="width = 996" />`, `<meta name=viewport content="width=996">`},
{`<span attr="test"></span>`, `<span attr=test></span>`},
{`<span attr='test'test'></span>`, `<span attr="test'test"></span>`},
{`<span attr="test"test"></span>`, `<span attr='test"test'></span>`},
{`<span attr='test""'&test'></span>`, `<span attr='test""'&test'></span>`},
{`<span attr="test/test"></span>`, `<span attr=test/test></span>`},
{`<span>&</span>`, `<span>&</span>`},
{`<span clear=none method=GET></span>`, `<span></span>`},
{`<span `<span >
{`<span selected="selected"></span>`, `<span selected></span>`},
{`<noscript><html><img id="x"></noscript>`, `<noscript><img id=x></noscript>`},
{`<body id="main"></body>`, `<body id=main>`},
{`<link href="data:text/plain, data">`, `<link href=data:,+data>`},
{`<svg width="100" height="100"><circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" /></svg>`, `<svg width="100" height="100"><circle cx="50" cy="50" r="40" stroke="green" stroke-width="4" fill="yellow" /></svg>`},
{`</span >`, `</span>`},
{`<meta name=viewport content="width=0.1, initial-scale=1.0 , maximum-scale=1000">`, `<meta name=viewport content="width=.1,initial-scale=1,maximum-scale=1e3">`},
{`<br/>`, `<br>`},
{`<input type="radio" value="">`, `<input type=radio value>`},
{`<input type="radio" value="on">`, `<input type=radio>`},
{`<input type="text" value="">`, `<input>`},
// increase coverage
{`<script style="css">js</script>`, `<script style=css>js</script>`},
{`<script type="text/javascript">js</script>`, `<script>js</script>`},
{`<script type="application/javascript">js</script>`, `<script>js</script>`},
{`<meta http-equiv="content-type" content="text/plain, text/html">`, `<meta http-equiv=content-type content=text/plain,text/html>`},
{`<span attr=""></span>`, `<span attr></span>`},
{`<code>x</code>`, `<code>x</code>`},
{`<p></p><p></p>`, `<p><p>`},
{`<ul><li></li> <li></li></ul>`, `<ul><li><li></ul>`},
{`<p></p><a></a>`, `<p></p><a></a>`},
{`<p></p>x<a></a>`, `<p></p>x<a></a>`},
{`<span style=>`, `<span>`},
{`<button `<button>`},
// whitespace
{`cats and dogs `, `cats and dogs`},
{` <div> <i> test </i> <b> test </b> </div> `, `<div><i>test</i> <b>test</b></div>`},
{`<strong>x </strong>y`, `<strong>x </strong>y`},
{`<strong>x </strong> y`, `<strong>x</strong> y`},
{"<strong>x </strong>\ny", "<strong>x</strong>\ny"},
{`<p>x </p>y`, `<p>x</p>y`},
{`x <p>y</p>`, `x<p>y`},
{` <!doctype html> <!--comment--> <html> <body><p></p></body></html> `, `<!doctype html><p>`}, // spaces before html and at the start of html are dropped
{`<p>x<br> y`, `<p>x<br>y`},
{`<p>x </b> <b> y`, `<p>x</b> <b>y`},
{`a <code></code> b`, `a <code></code>b`},
{`a <code>code</code> b`, `a <code>code</code> b`},
{`a <code> code </code> b`, `a <code>code</code> b`},
{`a <script>script</script> b`, `a <script>script</script>b`},
{"text\n<!--comment-->\ntext", "text\ntext"},
{"abc\n</body>\ndef", "abc\ndef"},
{"<x>\n<!--y-->\n</x>", "<x></x>"},
{"a <template> b </template> c", "a <template>b</template>c"},
// from HTML Minifier
{`<DIV TITLE="blah">boo</DIV>`, `<div title=blah>boo</div>`},
{"<p title\n\n\t =\n \"bar\">foo</p>", `<p title=bar>foo`},
{`<p class=" foo ">foo bar baz</p>`, `<p class=foo>foo bar baz`},
{`<input maxlength=" 5 ">`, `<input maxlength=5>`},
{`<input type="text">`, `<input>`},
{`<form method="get">`, `<form>`},
{`<script language="Javascript">alert(1)</script>`, `<script>alert(1)</script>`},
{`<script></script>`, ``},
{`<p JavaScript: x">x</p>`, `<p x">x`},
{`<span Selected="selected"></span>`, `<span selected></span>`},
{`<table><thead><tr><th>foo</th><th>bar</th></tr></thead><tfoot><tr><th>baz</th><th>qux</th></tr></tfoot><tbody><tr><td>boo</td><td>moo</td></tr></tbody></table>`,
`<table><thead><tr><th>foo<th>bar<tfoot><tr><th>baz<th>qux<tbody><tr><td>boo<td>moo</table>`},
{`<select><option>foo</option><option>bar</option></select>`, `<select><option>foo<option>bar</select>`},
{`<meta name="keywords" content="A, B">`, `<meta name=keywords content=A,B>`},
{`<iframe><html> <p> x </p> </html></iframe>`, `<iframe><p>x</iframe>`},
{`<math> ∫_a_^b^{f(x)<over>1+x} dx </math>`, `<math> ∫_a_^b^{f(x)<over>1+x} dx </math>`},
{`<script language="x" charset="x" src="y"></script>`, `<script src=y></script>`},
{`<style media="all">x</style>`, `<style>x</style>`},
{`<a id="abc" name="abc">y</a>`, `<a id=abc>y</a>`},
{`<a name="abc" id="abc">y</a>`, `<a id=abc>y</a>`},
{`<a id="" value="">y</a>`, `<a value>y</a>`},
// from Kangax html-minfier
{`<span style="font-family:"Helvetica Neue","Helvetica",Helvetica,Arial,sans-serif">text</span>`, `<span style='font-family:"Helvetica Neue","Helvetica",Helvetica,Arial,sans-serif'>text</span>`},
// go-fuzz
{`<meta e t n content=ful><a b`, `<meta e t n content=ful><a b>`},
{`<img alt=a'b="">`, `<img alt='a'b=""'>`},
{`</b`, `</b`},
{`<title></`, `<title></`},
{`<svg <`, `<svg <`},
{`<svg "`, `<svg "`},
{`<svg></`, `<svg></`},
{`<script><!--<`, `<script><!--<`},
// bugs
{`<p>text</p><br>text`, `<p>text</p><br>text`}, // #122
{`text <img> text`, `text <img> text`}, // #89
{`text <progress></progress> text`, `text <progress></progress> text`}, // #89
{`<pre> <x> a b </x> </pre>`, `<pre> <x> a b </x> </pre>`}, // #82
{`<svg id="1"></svg>`, `<svg id="1"></svg>`}, // #67
}
m := minify.New()
m.AddFunc("text/html", Minify)
m.AddFunc("text/css", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
_, err := io.Copy(w, r)
return err
})
m.AddFunc("application/javascript", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
_, err := io.Copy(w, r)
return err
})
for _, tt := range htmlTests {
t.Run(tt.html, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
err := Minify(m, w, r, nil)
test.Minify(t, tt.html, err, w.String(), tt.expected)
})
}
}
func TestHTMLKeepEndTags(t *testing.T) {
htmlTests := []struct {
html string
expected string
}{
{`<p></p><p></p>`, `<p></p><p></p>`},
{`<ul><li></li><li></li></ul>`, `<ul><li></li><li></li></ul>`},
}
m := minify.New()
htmlMinifier := &Minifier{KeepEndTags: true}
for _, tt := range htmlTests {
t.Run(tt.html, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
err := htmlMinifier.Minify(m, w, r, nil)
test.Minify(t, tt.html, err, w.String(), tt.expected)
})
}
}
func TestHTMLKeepConditionalComments(t *testing.T) {
htmlTests := []struct {
html string
expected string
}{
{`<!--[if IE 6]> <b> </b> <![endif]-->`, `<!--[if IE 6]><b></b><![endif]-->`},
{`<![if IE 6]> <b> </b> <![endif]>`, `<![if IE 6]><b></b><![endif]>`},
{`<!--[if IE 6]--> <b> </b> <!--[endif]-->`, `<!--[if IE 6]--><b></b><!--[endif]-->`},
{`<!--[if !mso]><!--> <b> </b> <!--<![endif]-->`, `<!--[if !mso]><!--><b></b><!--<![endif]-->`},
{`<!--[if gt IE 6]><!--> <b> </b> <![endif]-->`, `<!--[if gt IE 6]><!--><b></b><![endif]-->`},
}
m := minify.New()
htmlMinifier := &Minifier{KeepConditionalComments: true}
for _, tt := range htmlTests {
t.Run(tt.html, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
err := htmlMinifier.Minify(m, w, r, nil)
test.Minify(t, tt.html, err, w.String(), tt.expected)
})
}
}
func TestHTMLKeepWhitespace(t *testing.T) {
htmlTests := []struct {
html string
expected string
}{
{`cats and dogs `, `cats and dogs`},
{` <div> <i> test </i> <b> test </b> </div> `, `<div> <i> test </i> <b> test </b> </div>`},
{`<strong>x </strong>y`, `<strong>x </strong>y`},
{`<strong>x </strong> y`, `<strong>x </strong> y`},
{"<strong>x </strong>\ny", "<strong>x </strong>\ny"},
{`<p>x </p>y`, `<p>x </p>y`},
{`x <p>y</p>`, `x <p>y`},
{` <!doctype html> <!--comment--> <html> <body><p></p></body></html> `, `<!doctype html><p>`}, // spaces before html and at the start of html are dropped
{`<p>x<br> y`, `<p>x<br> y`},
{`<p>x </b> <b> y`, `<p>x </b> <b> y`},
{`a <code>code</code> b`, `a <code>code</code> b`},
{`a <code></code> b`, `a <code></code> b`},
{`a <script>script</script> b`, `a <script>script</script> b`},
{"text\n<!--comment-->\ntext", "text\ntext"},
{"text\n<!--comment-->text<!--comment--> text", "text\ntext text"},
{"abc\n</body>\ndef", "abc\ndef"},
{"<x>\n<!--y-->\n</x>", "<x>\n</x>"},
{"<style>lala{color:red}</style>", "<style>lala{color:red}</style>"},
}
m := minify.New()
htmlMinifier := &Minifier{KeepWhitespace: true}
for _, tt := range htmlTests {
t.Run(tt.html, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
err := htmlMinifier.Minify(m, w, r, nil)
test.Minify(t, tt.html, err, w.String(), tt.expected)
})
}
}
func TestHTMLURL(t *testing.T) {
htmlTests := []struct {
url string
html string
expected string
}{
{`http://example.com/`, `<a href=http://example.com/>link</a>`, `<a href=//example.com/>link</a>`},
{`https://example.com/`, `<a href=http://example.com/>link</a>`, `<a href=http://example.com/>link</a>`},
{`http://example.com/`, `<a href=https://example.com/>link</a>`, `<a href=https://example.com/>link</a>`},
{`https://example.com/`, `<a href=https://example.com/>link</a>`, `<a href=//example.com/>link</a>`},
{`http://example.com/`, `<a href=" http://example.com ">x</a>`, `<a href=//example.com>x</a>`},
{`http://example.com/`, `<link rel="stylesheet" type="text/css" href="http://example.com">`, `<link rel=stylesheet href=//example.com>`},
{`http://example.com/`, `<!doctype html> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"> <head profile="http://dublincore.org/documents/dcq-html/"> <!-- Barlesque 2.75.0 --> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />`,
`<!doctype html><html xmlns=//www.w3.org/1999/xhtml xml:lang=en><head profile=//dublincore.org/documents/dcq-html/><meta charset=utf-8>`},
{`http://example.com/`, `<html xmlns="http://www.w3.org/1999/xhtml"></html>`, `<html xmlns=//www.w3.org/1999/xhtml>`},
{`https://example.com/`, `<html xmlns="http://www.w3.org/1999/xhtml"></html>`, `<html xmlns=http://www.w3.org/1999/xhtml>`},
{`http://example.com/`, `<html xmlns="https://www.w3.org/1999/xhtml"></html>`, `<html xmlns=https://www.w3.org/1999/xhtml>`},
{`https://example.com/`, `<html xmlns="https://www.w3.org/1999/xhtml"></html>`, `<html xmlns=//www.w3.org/1999/xhtml>`},
}
m := minify.New()
m.AddFunc("text/html", Minify)
for _, tt := range htmlTests {
t.Run(tt.url, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
m.URL, _ = url.Parse(tt.url)
err := Minify(m, w, r, nil)
test.Minify(t, tt.html, err, w.String(), tt.expected)
})
}
}
func TestSpecialTagClosing(t *testing.T) {
m := minify.New()
m.AddFunc("text/html", Minify)
m.AddFunc("text/css", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
b, err := ioutil.ReadAll(r)
test.Error(t, err, nil)
test.String(t, string(b), "</script>")
_, err = w.Write(b)
return err
})
html := `<style></script></style>`
r := bytes.NewBufferString(html)
w := &bytes.Buffer{}
err := Minify(m, w, r, nil)
test.Minify(t, html, err, w.String(), html)
}
func TestReaderErrors(t *testing.T) {
r := test.NewErrorReader(0)
w := &bytes.Buffer{}
m := minify.New()
err := Minify(m, w, r, nil)
test.T(t, err, test.ErrPlain, "return error at first read")
}
func TestWriterErrors(t *testing.T) {
errorTests := []struct {
html string
n []int
}{
{`<!doctype>`, []int{0}},
{`text`, []int{0}},
{`<foo attr=val>`, []int{0, 1, 2, 3, 4, 5}},
{`</foo>`, []int{0}},
{`<style>x</style>`, []int{2}},
{`<textarea>x</textarea>`, []int{2}},
{`<code>x</code>`, []int{2}},
{`<pre>x</pre>`, []int{2}},
{`<svg>x</svg>`, []int{0}},
{`<math>x</math>`, []int{0}},
{`<!--[if IE 6]> text <![endif]-->`, []int{0, 1, 2}},
{`<![if IE 6]> text <![endif]>`, []int{0}},
}
m := minify.New()
m.Add("text/html", &Minifier{
KeepConditionalComments: true,
})
for _, tt := range errorTests {
for _, n := range tt.n {
t.Run(fmt.Sprint(tt.html, " ", tt.n), func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := test.NewErrorWriter(n)
err := m.Minify("text/html", w, r)
test.T(t, err, test.ErrPlain)
})
}
}
}
func TestMinifyErrors(t *testing.T) {
errorTests := []struct {
html string
err error
}{
{`<style>abc</style>`, test.ErrPlain},
{`<path style="abc"/>`, test.ErrPlain},
{`<path test.ErrPlain},
{`<svg></svg>`, test.ErrPlain},
{`<math></math>`, test.ErrPlain},
}
m := minify.New()
m.AddFunc("text/css", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
return test.ErrPlain
})
m.AddFunc("application/javascript", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
return test.ErrPlain
})
m.AddFunc("image/svg+xml", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
return test.ErrPlain
})
m.AddFunc("application/mathml+xml", func(_ *minify.M, w io.Writer, r io.Reader, _ map[string]string) error {
return test.ErrPlain
})
for _, tt := range errorTests {
t.Run(tt.html, func(t *testing.T) {
r := bytes.NewBufferString(tt.html)
w := &bytes.Buffer{}
err := Minify(m, w, r, nil)
test.T(t, err, tt.err)
})
}
}
////////////////////////////////////////////////////////////////
func ExampleMinify() {
m := minify.New()
m.AddFunc("text/html", Minify)
m.AddFunc("text/css", css.Minify)
m.AddFunc("image/svg+xml", svg.Minify)
m.AddFuncRegexp(regexp.MustCompile("^(application|text)/(x-)?(java|ecma)script$"), js.Minify)
m.AddFuncRegexp(regexp.MustCompile("[/+]json$"), json.Minify)
m.AddFuncRegexp(regexp.MustCompile("[/+]xml$"), xml.Minify)
// set URL to minify link locations too
m.URL, _ = url.Parse("https://www.example.com/")
if err := m.Minify("text/html", os.Stdout, os.Stdin); err != nil {
panic(err)
}
}
func ExampleMinify_options() {
m := minify.New()
m.Add("text/html", &Minifier{
KeepDefaultAttrVals: true,
KeepWhitespace: true,
})
if err := m.Minify("text/html", os.Stdout, os.Stdin); err != nil {
panic(err)
}
}
func ExampleMinify_reader() {
b := bytes.NewReader([]byte("<html><body><h1>Example</h1></body></html>"))
m := minify.New()
m.Add("text/html", &Minifier{})
r := m.Reader("text/html", b)
if _, err := io.Copy(os.Stdout, r); err != nil {
panic(err)
}
// Output: <h1>Example</h1>
}
func ExampleMinify_writer() {
m := minify.New()
m.Add("text/html", &Minifier{})
w := m.Writer("text/html", os.Stdout)
w.Write([]byte("<html><body><h1>Example</h1></body></html>"))
w.Close()
// Output: <h1>Example</h1>
}