minify/html/html_test.go at v2.3.4 · randomcrab/minify

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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"

"github.com/tdewolff/minify/css"

"github.com/tdewolff/minify/js"

"github.com/tdewolff/minify/json"

"github.com/tdewolff/minify/svg"

"github.com/tdewolff/minify/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>`},

{``, ``},

{`<style></style>`, `<style></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 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>`},

// increase coverage

{`<script style="css">js</script>`, `<script style=css>js</script>`},

{`<script type="application/javascript">js</script>`, `<script type=application/javascript>js</script>`},

{`<meta http-equiv="content-type" content="text/plain, text/html">`, `<meta http-equiv=content-type content=text/plain,text/html>`},

{`<meta http-equiv="content-style-type" content="text/less">`, `<meta http-equiv=content-style-type content=text/less>`},

{`<meta http-equiv="content-style-type" content="text/less; charset=utf-8">`, `<meta http-equiv=content-style-type content="text/less;charset=utf-8">`},

{`<meta http-equiv="content-script-type" content="application/js">`, `<meta http-equiv=content-script-type content=application/js>`},

{`<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>  <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\ntext", "text\ntext"},

{"abc\n</body>\ndef", "abc\ndef"},

{"<x>\n\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 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("text/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]>`},

}

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>  <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\ntext", "text\ntext"},

{"text\ntext text", "text\ntext text"},

{"abc\n</body>\ndef", "abc\ndef"},

{"<x>\n\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/">  <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}},

{``, []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("text/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("text/javascript", js.Minify)

m.AddFunc("image/svg+xml", svg.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>

}

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