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Best K6 code snippet using js.Context
escape_test.go
Source:escape_test.go 
1// Copyright 2011 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4package template5import (6 "bytes"7 "encoding/json"8 "fmt"9 "os"10 "strings"11 "testing"12 "text/template"13 "text/template/parse"14)15type badMarshaler struct{}16func (x *badMarshaler) MarshalJSON() ([]byte, error) {17 // Keys in valid JSON must be double quoted as must all strings.18 return []byte("{ foo: 'not quite valid JSON' }"), nil19}20type goodMarshaler struct{}21func (x *goodMarshaler) MarshalJSON() ([]byte, error) {22 return []byte(`{ "<foo>": "O'Reilly" }`), nil23}24func TestEscape(t *testing.T) {25 data := struct {26 F, T bool27 C, G, H string28 A, E []string29 B, M json.Marshaler30 N int31 Z *int32 W HTML33 }{34 F: false,35 T: true,36 C: "<Cincinatti>",37 G: "<Goodbye>",38 H: "<Hello>",39 A: []string{"<a>", "<b>"},40 E: []string{},41 N: 42,42 B: &badMarshaler{},43 M: &goodMarshaler{},44 Z: nil,45 W: HTML(`¡<b class="foo">Hello</b>, <textarea>O'World</textarea>!`),46 }47 pdata := &data48 tests := []struct {49 name string50 input string51 output string52 }{53 {54 "if",55 "{{if .T}}Hello{{end}}, {{.C}}!",56 "Hello, <Cincinatti>!",57 },58 {59 "else",60 "{{if .F}}{{.H}}{{else}}{{.G}}{{end}}!",61 "<Goodbye>!",62 },63 {64 "overescaping1",65 "Hello, {{.C | html}}!",66 "Hello, <Cincinatti>!",67 },68 {69 "overescaping2",70 "Hello, {{html .C}}!",71 "Hello, <Cincinatti>!",72 },73 {74 "overescaping3",75 "{{with .C}}{{$msg := .}}Hello, {{$msg}}!{{end}}",76 "Hello, <Cincinatti>!",77 },78 {79 "assignment",80 "{{if $x := .H}}{{$x}}{{end}}",81 "<Hello>",82 },83 {84 "withBody",85 "{{with .H}}{{.}}{{end}}",86 "<Hello>",87 },88 {89 "withElse",90 "{{with .E}}{{.}}{{else}}{{.H}}{{end}}",91 "<Hello>",92 },93 {94 "rangeBody",95 "{{range .A}}{{.}}{{end}}",96 "<a><b>",97 },98 {99 "rangeElse",100 "{{range .E}}{{.}}{{else}}{{.H}}{{end}}",101 "<Hello>",102 },103 {104 "nonStringValue",105 "{{.T}}",106 "true",107 },108 {109 "constant",110 `<a href="/search?q={{"'a<b'"}}">`,111 `<a href="/search?q=%27a%3cb%27">`,112 },113 {114 "multipleAttrs",115 "<a b=1 c={{.H}}>",116 "<a b=1 c=<Hello>>",117 },118 {119 "urlStartRel",120 `<a href='{{"/foo/bar?a=b&c=d"}}'>`,121 `<a href='/foo/bar?a=b&c=d'>`,122 },123 {124 "urlStartAbsOk",125 `<a href='{{"http://example.com/foo/bar?a=b&c=d"}}'>`,126 `<a href='http://example.com/foo/bar?a=b&c=d'>`,127 },128 {129 "protocolRelativeURLStart",130 `<a href='{{"//example.com:8000/foo/bar?a=b&c=d"}}'>`,131 `<a href='//example.com:8000/foo/bar?a=b&c=d'>`,132 },133 {134 "pathRelativeURLStart",135 `<a href="{{"/javascript:80/foo/bar"}}">`,136 `<a href="/javascript:80/foo/bar">`,137 },138 {139 "dangerousURLStart",140 `<a href='{{"javascript:alert(%22pwned%22)"}}'>`,141 `<a href='#ZgotmplZ'>`,142 },143 {144 "dangerousURLStart2",145 `<a href=' {{"javascript:alert(%22pwned%22)"}}'>`,146 `<a href=' #ZgotmplZ'>`,147 },148 {149 "nonHierURL",150 `<a href={{"mailto:Muhammed \"The Greatest\" Ali <m.ali@example.com>"}}>`,151 `<a href=mailto:Muhammed%20%22The%20Greatest%22%20Ali%20%3cm.ali@example.com%3e>`,152 },153 {154 "urlPath",155 `<a href='http://{{"javascript:80"}}/foo'>`,156 `<a href='http://javascript:80/foo'>`,157 },158 {159 "urlQuery",160 `<a href='/search?q={{.H}}'>`,161 `<a href='/search?q=%3cHello%3e'>`,162 },163 {164 "urlFragment",165 `<a href='/faq#{{.H}}'>`,166 `<a href='/faq#%3cHello%3e'>`,167 },168 {169 "urlBranch",170 `<a href="{{if .F}}/foo?a=b{{else}}/bar{{end}}">`,171 `<a href="/bar">`,172 },173 {174 "urlBranchConflictMoot",175 `<a href="{{if .T}}/foo?a={{else}}/bar#{{end}}{{.C}}">`,176 `<a href="/foo?a=%3cCincinatti%3e">`,177 },178 {179 "jsStrValue",180 "<button onclick='alert({{.H}})'>",181 `<button onclick='alert("\u003cHello\u003e")'>`,182 },183 {184 "jsNumericValue",185 "<button onclick='alert({{.N}})'>",186 `<button onclick='alert( 42 )'>`,187 },188 {189 "jsBoolValue",190 "<button onclick='alert({{.T}})'>",191 `<button onclick='alert( true )'>`,192 },193 {194 "jsNilValue",195 "<button onclick='alert(typeof{{.Z}})'>",196 `<button onclick='alert(typeof null )'>`,197 },198 {199 "jsObjValue",200 "<button onclick='alert({{.A}})'>",201 `<button onclick='alert(["\u003ca\u003e","\u003cb\u003e"])'>`,202 },203 {204 "jsObjValueScript",205 "<script>alert({{.A}})</script>",206 `<script>alert(["\u003ca\u003e","\u003cb\u003e"])</script>`,207 },208 {209 "jsObjValueNotOverEscaped",210 "<button onclick='alert({{.A | html}})'>",211 `<button onclick='alert(["\u003ca\u003e","\u003cb\u003e"])'>`,212 },213 {214 "jsStr",215 "<button onclick='alert("{{.H}}")'>",216 `<button onclick='alert("\x3cHello\x3e")'>`,217 },218 {219 "badMarshaler",220 `<button onclick='alert(1/{{.B}}in numbers)'>`,221 `<button onclick='alert(1/ /* json: error calling MarshalJSON for type *template.badMarshaler: invalid character 'f' looking for beginning of object key string */null in numbers)'>`,222 },223 {224 "jsMarshaler",225 `<button onclick='alert({{.M}})'>`,226 `<button onclick='alert({"\u003cfoo\u003e":"O'Reilly"})'>`,227 },228 {229 "jsStrNotUnderEscaped",230 "<button onclick='alert({{.C | urlquery}})'>",231 // URL escaped, then quoted for JS.232 `<button onclick='alert("%3CCincinatti%3E")'>`,233 },234 {235 "jsRe",236 `<button onclick='alert(/{{"foo+bar"}}/.test(""))'>`,237 `<button onclick='alert(/foo\x2bbar/.test(""))'>`,238 },239 {240 "jsReBlank",241 `<script>alert(/{{""}}/.test(""));</script>`,242 `<script>alert(/(?:)/.test(""));</script>`,243 },244 {245 "jsReAmbigOk",246 `<script>{{if true}}var x = 1{{end}}</script>`,247 // The {if} ends in an ambiguous jsCtx but there is248 // no slash following so we shouldn't care.249 `<script>var x = 1</script>`,250 },251 {252 "styleBidiKeywordPassed",253 `<p style="dir: {{"ltr"}}">`,254 `<p style="dir: ltr">`,255 },256 {257 "styleBidiPropNamePassed",258 `<p style="border-{{"left"}}: 0; border-{{"right"}}: 1in">`,259 `<p style="border-left: 0; border-right: 1in">`,260 },261 {262 "styleExpressionBlocked",263 `<p style="width: {{"expression(alert(1337))"}}">`,264 `<p style="width: ZgotmplZ">`,265 },266 {267 "styleTagSelectorPassed",268 `<style>{{"p"}} { color: pink }</style>`,269 `<style>p { color: pink }</style>`,270 },271 {272 "styleIDPassed",273 `<style>p{{"#my-ID"}} { font: Arial }</style>`,274 `<style>p#my-ID { font: Arial }</style>`,275 },276 {277 "styleClassPassed",278 `<style>p{{".my_class"}} { font: Arial }</style>`,279 `<style>p.my_class { font: Arial }</style>`,280 },281 {282 "styleQuantityPassed",283 `<a style="left: {{"2em"}}; top: {{0}}">`,284 `<a style="left: 2em; top: 0">`,285 },286 {287 "stylePctPassed",288 `<table style=width:{{"100%"}}>`,289 `<table style=width:100%>`,290 },291 {292 "styleColorPassed",293 `<p style="color: {{"#8ff"}}; background: {{"#000"}}">`,294 `<p style="color: #8ff; background: #000">`,295 },296 {297 "styleObfuscatedExpressionBlocked",298 `<p style="width: {{" e\\78preS\x00Sio/**/n(alert(1337))"}}">`,299 `<p style="width: ZgotmplZ">`,300 },301 {302 "styleMozBindingBlocked",303 `<p style="{{"-moz-binding(alert(1337))"}}: ...">`,304 `<p style="ZgotmplZ: ...">`,305 },306 {307 "styleObfuscatedMozBindingBlocked",308 `<p style="{{" -mo\\7a-B\x00I/**/nding(alert(1337))"}}: ...">`,309 `<p style="ZgotmplZ: ...">`,310 },311 {312 "styleFontNameString",313 `<p style='font-family: "{{"Times New Roman"}}"'>`,314 `<p style='font-family: "Times New Roman"'>`,315 },316 {317 "styleFontNameString",318 `<p style='font-family: "{{"Times New Roman"}}", "{{"sans-serif"}}"'>`,319 `<p style='font-family: "Times New Roman", "sans-serif"'>`,320 },321 {322 "styleFontNameUnquoted",323 `<p style='font-family: {{"Times New Roman"}}'>`,324 `<p style='font-family: Times New Roman'>`,325 },326 {327 "styleURLQueryEncoded",328 `<p style="background: url(/img?name={{"O'Reilly Animal(1)<2>.png"}})">`,329 `<p style="background: url(/img?name=O%27Reilly%20Animal%281%29%3c2%3e.png)">`,330 },331 {332 "styleQuotedURLQueryEncoded",333 `<p style="background: url('/img?name={{"O'Reilly Animal(1)<2>.png"}}')">`,334 `<p style="background: url('/img?name=O%27Reilly%20Animal%281%29%3c2%3e.png')">`,335 },336 {337 "styleStrQueryEncoded",338 `<p style="background: '/img?name={{"O'Reilly Animal(1)<2>.png"}}'">`,339 `<p style="background: '/img?name=O%27Reilly%20Animal%281%29%3c2%3e.png'">`,340 },341 {342 "styleURLBadProtocolBlocked",343 `<a style="background: url('{{"javascript:alert(1337)"}}')">`,344 `<a style="background: url('#ZgotmplZ')">`,345 },346 {347 "styleStrBadProtocolBlocked",348 `<a style="background: '{{"vbscript:alert(1337)"}}'">`,349 `<a style="background: '#ZgotmplZ'">`,350 },351 {352 "styleStrEncodedProtocolEncoded",353 `<a style="background: '{{"javascript\\3a alert(1337)"}}'">`,354 // The CSS string 'javascript\\3a alert(1337)' does not contains a colon.355 `<a style="background: 'javascript\\3a alert\28 1337\29 '">`,356 },357 {358 "styleURLGoodProtocolPassed",359 `<a style="background: url('{{"http://oreilly.com/O'Reilly Animals(1)<2>;{}.html"}}')">`,360 `<a style="background: url('http://oreilly.com/O%27Reilly%20Animals%281%29%3c2%3e;%7b%7d.html')">`,361 },362 {363 "styleStrGoodProtocolPassed",364 `<a style="background: '{{"http://oreilly.com/O'Reilly Animals(1)<2>;{}.html"}}'">`,365 `<a style="background: 'http\3a\2f\2foreilly.com\2fO\27Reilly Animals\28 1\29\3c 2\3e\3b\7b\7d.html'">`,366 },367 {368 "styleURLEncodedForHTMLInAttr",369 `<a style="background: url('{{"/search?img=foo&size=icon"}}')">`,370 `<a style="background: url('/search?img=foo&size=icon')">`,371 },372 {373 "styleURLNotEncodedForHTMLInCdata",374 `<style>body { background: url('{{"/search?img=foo&size=icon"}}') }</style>`,375 `<style>body { background: url('/search?img=foo&size=icon') }</style>`,376 },377 {378 "styleURLMixedCase",379 `<p style="background: URL(#{{.H}})">`,380 `<p style="background: URL(#%3cHello%3e)">`,381 },382 {383 "stylePropertyPairPassed",384 `<a style='{{"color: red"}}'>`,385 `<a style='color: red'>`,386 },387 {388 "styleStrSpecialsEncoded",389 `<a style="font-family: '{{"/**/'\";:// \\"}}', "{{"/**/'\";:// \\"}}"">`,390 `<a style="font-family: '\2f**\2f\27\22\3b\3a\2f\2f \\', "\2f**\2f\27\22\3b\3a\2f\2f \\"">`,391 },392 {393 "styleURLSpecialsEncoded",394 `<a style="border-image: url({{"/**/'\";:// \\"}}), url("{{"/**/'\";:// \\"}}"), url('{{"/**/'\";:// \\"}}'), 'http://www.example.com/?q={{"/**/'\";:// \\"}}''">`,395 `<a style="border-image: url(/**/%27%22;://%20%5c), url("/**/%27%22;://%20%5c"), url('/**/%27%22;://%20%5c'), 'http://www.example.com/?q=%2f%2a%2a%2f%27%22%3b%3a%2f%2f%20%5c''">`,396 },397 {398 "HTML comment",399 "<b>Hello, <!-- name of world -->{{.C}}</b>",400 "<b>Hello, <Cincinatti></b>",401 },402 {403 "HTML comment not first < in text node.",404 "<<!-- -->!--",405 "<!--",406 },407 {408 "HTML normalization 1",409 "a < b",410 "a < b",411 },412 {413 "HTML normalization 2",414 "a << b",415 "a << b",416 },417 {418 "HTML normalization 3",419 "a<<!-- --><!-- -->b",420 "a<b",421 },422 {423 "HTML doctype not normalized",424 "<!DOCTYPE html>Hello, World!",425 "<!DOCTYPE html>Hello, World!",426 },427 {428 "HTML doctype not case-insensitive",429 "<!doCtYPE htMl>Hello, World!",430 "<!doCtYPE htMl>Hello, World!",431 },432 {433 "No doctype injection",434 `<!{{"DOCTYPE"}}`,435 "<!DOCTYPE",436 },437 {438 "Split HTML comment",439 "<b>Hello, <!-- name of {{if .T}}city -->{{.C}}{{else}}world -->{{.W}}{{end}}</b>",440 "<b>Hello, <Cincinatti></b>",441 },442 {443 "JS line comment",444 "<script>for (;;) { if (c()) break// foo not a label\n" +445 "foo({{.T}});}</script>",446 "<script>for (;;) { if (c()) break\n" +447 "foo( true );}</script>",448 },449 {450 "JS multiline block comment",451 "<script>for (;;) { if (c()) break/* foo not a label\n" +452 " */foo({{.T}});}</script>",453 // Newline separates break from call. If newline454 // removed, then break will consume label leaving455 // code invalid.456 "<script>for (;;) { if (c()) break\n" +457 "foo( true );}</script>",458 },459 {460 "JS single-line block comment",461 "<script>for (;;) {\n" +462 "if (c()) break/* foo a label */foo;" +463 "x({{.T}});}</script>",464 // Newline separates break from call. If newline465 // removed, then break will consume label leaving466 // code invalid.467 "<script>for (;;) {\n" +468 "if (c()) break foo;" +469 "x( true );}</script>",470 },471 {472 "JS block comment flush with mathematical division",473 "<script>var a/*b*//c\nd</script>",474 "<script>var a /c\nd</script>",475 },476 {477 "JS mixed comments",478 "<script>var a/*b*///c\nd</script>",479 "<script>var a \nd</script>",480 },481 {482 "CSS comments",483 "<style>p// paragraph\n" +484 `{border: 1px/* color */{{"#00f"}}}</style>`,485 "<style>p\n" +486 "{border: 1px #00f}</style>",487 },488 {489 "JS attr block comment",490 `<a onclick="f(""); /* alert({{.H}}) */">`,491 // Attribute comment tests should pass if the comments492 // are successfully elided.493 `<a onclick="f(""); /* alert() */">`,494 },495 {496 "JS attr line comment",497 `<a onclick="// alert({{.G}})">`,498 `<a onclick="// alert()">`,499 },500 {501 "CSS attr block comment",502 `<a style="/* color: {{.H}} */">`,503 `<a style="/* color: */">`,504 },505 {506 "CSS attr line comment",507 `<a style="// color: {{.G}}">`,508 `<a style="// color: ">`,509 },510 {511 "HTML substitution commented out",512 "<p><!-- {{.H}} --></p>",513 "<p></p>",514 },515 {516 "Comment ends flush with start",517 "<!--{{.}}--><script>/*{{.}}*///{{.}}\n</script><style>/*{{.}}*///{{.}}\n</style><a onclick='/*{{.}}*///{{.}}' style='/*{{.}}*///{{.}}'>",518 "<script> \n</script><style> \n</style><a onclick='/**///' style='/**///'>",519 },520 {521 "typed HTML in text",522 `{{.W}}`,523 `¡<b class="foo">Hello</b>, <textarea>O'World</textarea>!`,524 },525 {526 "typed HTML in attribute",527 `<div title="{{.W}}">`,528 `<div title="¡Hello, O'World!">`,529 },530 {531 "typed HTML in script",532 `<button onclick="alert({{.W}})">`,533 `<button onclick="alert("\u0026iexcl;\u003cb class=\"foo\"\u003eHello\u003c/b\u003e, \u003ctextarea\u003eO'World\u003c/textarea\u003e!")">`,534 },535 {536 "typed HTML in RCDATA",537 `<textarea>{{.W}}</textarea>`,538 `<textarea>¡<b class="foo">Hello</b>, <textarea>O'World</textarea>!</textarea>`,539 },540 {541 "range in textarea",542 "<textarea>{{range .A}}{{.}}{{end}}</textarea>",543 "<textarea><a><b></textarea>",544 },545 {546 "No tag injection",547 `{{"10$"}}<{{"script src,evil.org/pwnd.js"}}...`,548 `10$<script src,evil.org/pwnd.js...`,549 },550 {551 "No comment injection",552 `<{{"!--"}}`,553 `<!--`,554 },555 {556 "No RCDATA end tag injection",557 `<textarea><{{"/textarea "}}...</textarea>`,558 `<textarea></textarea ...</textarea>`,559 },560 {561 "optional attrs",562 `<img class="{{"iconClass"}}"` +563 `{{if .T}} id="{{"<iconId>"}}"{{end}}` +564 // Double quotes inside if/else.565 ` src=` +566 `{{if .T}}"?{{"<iconPath>"}}"` +567 `{{else}}"images/cleardot.gif"{{end}}` +568 // Missing space before title, but it is not a569 // part of the src attribute.570 `{{if .T}}title="{{"<title>"}}"{{end}}` +571 // Quotes outside if/else.572 ` alt="` +573 `{{if .T}}{{"<alt>"}}` +574 `{{else}}{{if .F}}{{"<title>"}}{{end}}` +575 `{{end}}"` +576 `>`,577 `<img class="iconClass" id="<iconId>" src="?%3ciconPath%3e"title="<title>" alt="<alt>">`,578 },579 {580 "conditional valueless attr name",581 `<input{{if .T}} checked{{end}} name=n>`,582 `<input checked name=n>`,583 },584 {585 "conditional dynamic valueless attr name 1",586 `<input{{if .T}} {{"checked"}}{{end}} name=n>`,587 `<input checked name=n>`,588 },589 {590 "conditional dynamic valueless attr name 2",591 `<input {{if .T}}{{"checked"}} {{end}}name=n>`,592 `<input checked name=n>`,593 },594 {595 "dynamic attribute name",596 `<img on{{"load"}}="alert({{"loaded"}})">`,597 // Treated as JS since quotes are inserted.598 `<img onload="alert("loaded")">`,599 },600 {601 "bad dynamic attribute name 1",602 // Allow checked, selected, disabled, but not JS or603 // CSS attributes.604 `<input {{"onchange"}}="{{"doEvil()"}}">`,605 `<input ZgotmplZ="doEvil()">`,606 },607 {608 "bad dynamic attribute name 2",609 `<div {{"sTyle"}}="{{"color: expression(alert(1337))"}}">`,610 `<div ZgotmplZ="color: expression(alert(1337))">`,611 },612 {613 "bad dynamic attribute name 3",614 // Allow title or alt, but not a URL.615 `<img {{"src"}}="{{"javascript:doEvil()"}}">`,616 `<img ZgotmplZ="javascript:doEvil()">`,617 },618 {619 "bad dynamic attribute name 4",620 // Structure preservation requires values to associate621 // with a consistent attribute.622 `<input checked {{""}}="Whose value am I?">`,623 `<input checked ZgotmplZ="Whose value am I?">`,624 },625 {626 "dynamic element name",627 `<h{{3}}><table><t{{"head"}}>...</h{{3}}>`,628 `<h3><table><thead>...</h3>`,629 },630 {631 "bad dynamic element name",632 // Dynamic element names are typically used to switch633 // between (thead, tfoot, tbody), (ul, ol), (th, td),634 // and other replaceable sets.635 // We do not currently easily support (ul, ol).636 // If we do change to support that, this test should637 // catch failures to filter out special tag names which638 // would violate the structure preservation property --639 // if any special tag name could be substituted, then640 // the content could be raw text/RCDATA for some inputs641 // and regular HTML content for others.642 `<{{"script"}}>{{"doEvil()"}}</{{"script"}}>`,643 `<script>doEvil()</script>`,644 },645 }646 for _, test := range tests {647 tmpl := New(test.name)648 tmpl = Must(tmpl.Parse(test.input))649 // Check for bug 6459: Tree field was not set in Parse.650 if tmpl.Tree != tmpl.text.Tree {651 t.Errorf("%s: tree not set properly", test.name)652 continue653 }654 b := new(bytes.Buffer)655 if err := tmpl.Execute(b, data); err != nil {656 t.Errorf("%s: template execution failed: %s", test.name, err)657 continue658 }659 if w, g := test.output, b.String(); w != g {660 t.Errorf("%s: escaped output: want\n\t%q\ngot\n\t%q", test.name, w, g)661 continue662 }663 b.Reset()664 if err := tmpl.Execute(b, pdata); err != nil {665 t.Errorf("%s: template execution failed for pointer: %s", test.name, err)666 continue667 }668 if w, g := test.output, b.String(); w != g {669 t.Errorf("%s: escaped output for pointer: want\n\t%q\ngot\n\t%q", test.name, w, g)670 continue671 }672 if tmpl.Tree != tmpl.text.Tree {673 t.Errorf("%s: tree mismatch", test.name)674 continue675 }676 }677}678func TestEscapeSet(t *testing.T) {679 type dataItem struct {680 Children []*dataItem681 X string682 }683 data := dataItem{684 Children: []*dataItem{685 {X: "foo"},686 {X: "<bar>"},687 {688 Children: []*dataItem{689 {X: "baz"},690 },691 },692 },693 }694 tests := []struct {695 inputs map[string]string696 want string697 }{698 // The trivial set.699 {700 map[string]string{701 "main": ``,702 },703 ``,704 },705 // A template called in the start context.706 {707 map[string]string{708 "main": `Hello, {{template "helper"}}!`,709 // Not a valid top level HTML template.710 // "<b" is not a full tag.711 "helper": `{{"<World>"}}`,712 },713 `Hello, <World>!`,714 },715 // A template called in a context other than the start.716 {717 map[string]string{718 "main": `<a onclick='a = {{template "helper"}};'>`,719 // Not a valid top level HTML template.720 // "<b" is not a full tag.721 "helper": `{{"<a>"}}<b`,722 },723 `<a onclick='a = "\u003ca\u003e"<b;'>`,724 },725 // A recursive template that ends in its start context.726 {727 map[string]string{728 "main": `{{range .Children}}{{template "main" .}}{{else}}{{.X}} {{end}}`,729 },730 `foo <bar> baz `,731 },732 // A recursive helper template that ends in its start context.733 {734 map[string]string{735 "main": `{{template "helper" .}}`,736 "helper": `{{if .Children}}<ul>{{range .Children}}<li>{{template "main" .}}</li>{{end}}</ul>{{else}}{{.X}}{{end}}`,737 },738 `<ul><li>foo</li><li><bar></li><li><ul><li>baz</li></ul></li></ul>`,739 },740 // Co-recursive templates that end in its start context.741 {742 map[string]string{743 "main": `<blockquote>{{range .Children}}{{template "helper" .}}{{end}}</blockquote>`,744 "helper": `{{if .Children}}{{template "main" .}}{{else}}{{.X}}<br>{{end}}`,745 },746 `<blockquote>foo<br><bar><br><blockquote>baz<br></blockquote></blockquote>`,747 },748 // A template that is called in two different contexts.749 {750 map[string]string{751 "main": `<button onclick="title='{{template "helper"}}'; ...">{{template "helper"}}</button>`,752 "helper": `{{11}} of {{"<100>"}}`,753 },754 `<button onclick="title='11 of \x3c100\x3e'; ...">11 of <100></button>`,755 },756 // A non-recursive template that ends in a different context.757 // helper starts in jsCtxRegexp and ends in jsCtxDivOp.758 {759 map[string]string{760 "main": `<script>var x={{template "helper"}}/{{"42"}};</script>`,761 "helper": "{{126}}",762 },763 `<script>var x= 126 /"42";</script>`,764 },765 // A recursive template that ends in a similar context.766 {767 map[string]string{768 "main": `<script>var x=[{{template "countdown" 4}}];</script>`,769 "countdown": `{{.}}{{if .}},{{template "countdown" . | pred}}{{end}}`,770 },771 `<script>var x=[ 4 , 3 , 2 , 1 , 0 ];</script>`,772 },773 // A recursive template that ends in a different context.774 /*775 {776 map[string]string{777 "main": `<a href="/foo{{template "helper" .}}">`,778 "helper": `{{if .Children}}{{range .Children}}{{template "helper" .}}{{end}}{{else}}?x={{.X}}{{end}}`,779 },780 `<a href="/foo?x=foo?x=%3cbar%3e?x=baz">`,781 },782 */783 }784 // pred is a template function that returns the predecessor of a785 // natural number for testing recursive templates.786 fns := FuncMap{"pred": func(a ...interface{}) (interface{}, error) {787 if len(a) == 1 {788 if i, _ := a[0].(int); i > 0 {789 return i - 1, nil790 }791 }792 return nil, fmt.Errorf("undefined pred(%v)", a)793 }}794 for _, test := range tests {795 source := ""796 for name, body := range test.inputs {797 source += fmt.Sprintf("{{define %q}}%s{{end}} ", name, body)798 }799 tmpl, err := New("root").Funcs(fns).Parse(source)800 if err != nil {801 t.Errorf("error parsing %q: %v", source, err)802 continue803 }804 var b bytes.Buffer805 if err := tmpl.ExecuteTemplate(&b, "main", data); err != nil {806 t.Errorf("%q executing %v", err.Error(), tmpl.Lookup("main"))807 continue808 }809 if got := b.String(); test.want != got {810 t.Errorf("want\n\t%q\ngot\n\t%q", test.want, got)811 }812 }813}814func TestErrors(t *testing.T) {815 tests := []struct {816 input string817 err string818 }{819 // Non-error cases.820 {821 "{{if .Cond}}<a>{{else}}<b>{{end}}",822 "",823 },824 {825 "{{if .Cond}}<a>{{end}}",826 "",827 },828 {829 "{{if .Cond}}{{else}}<b>{{end}}",830 "",831 },832 {833 "{{with .Cond}}<div>{{end}}",834 "",835 },836 {837 "{{range .Items}}<a>{{end}}",838 "",839 },840 {841 "<a href='/foo?{{range .Items}}&{{.K}}={{.V}}{{end}}'>",842 "",843 },844 // Error cases.845 {846 "{{if .Cond}}<a{{end}}",847 "z:1:5: {{if}} branches",848 },849 {850 "{{if .Cond}}\n{{else}}\n<a{{end}}",851 "z:1:5: {{if}} branches",852 },853 {854 // Missing quote in the else branch.855 `{{if .Cond}}<a href="foo">{{else}}<a href="bar>{{end}}`,856 "z:1:5: {{if}} branches",857 },858 {859 // Different kind of attribute: href implies a URL.860 "<a {{if .Cond}}href='{{else}}title='{{end}}{{.X}}'>",861 "z:1:8: {{if}} branches",862 },863 {864 "\n{{with .X}}<a{{end}}",865 "z:2:7: {{with}} branches",866 },867 {868 "\n{{with .X}}<a>{{else}}<a{{end}}",869 "z:2:7: {{with}} branches",870 },871 {872 "{{range .Items}}<a{{end}}",873 `z:1: on range loop re-entry: "<" in attribute name: "<a"`,874 },875 {876 "\n{{range .Items}} x='<a{{end}}",877 "z:2:8: on range loop re-entry: {{range}} branches",878 },879 {880 "<a b=1 c={{.H}}",881 "z: ends in a non-text context: {stateAttr delimSpaceOrTagEnd",882 },883 {884 "<script>foo();",885 "z: ends in a non-text context: {stateJS",886 },887 {888 `<a href="{{if .F}}/foo?a={{else}}/bar/{{end}}{{.H}}">`,889 "z:1:47: {{.H}} appears in an ambiguous URL context",890 },891 {892 `<a onclick="alert('Hello \`,893 `unfinished escape sequence in JS string: "Hello \\"`,894 },895 {896 `<a onclick='alert("Hello\, World\`,897 `unfinished escape sequence in JS string: "Hello\\, World\\"`,898 },899 {900 `<a onclick='alert(/x+\`,901 `unfinished escape sequence in JS string: "x+\\"`,902 },903 {904 `<a onclick="/foo[\]/`,905 `unfinished JS regexp charset: "foo[\\]/"`,906 },907 {908 // It is ambiguous whether 1.5 should be 1\.5 or 1.5.909 // Either `var x = 1/- 1.5 /i.test(x)`910 // where `i.test(x)` is a method call of reference i,911 // or `/-1\.5/i.test(x)` which is a method call on a912 // case insensitive regular expression.913 `<script>{{if false}}var x = 1{{end}}/-{{"1.5"}}/i.test(x)</script>`,914 `'/' could start a division or regexp: "/-"`,915 },916 {917 `{{template "foo"}}`,918 "z:1:11: no such template \"foo\"",919 },920 {921 `<div{{template "y"}}>` +922 // Illegal starting in stateTag but not in stateText.923 `{{define "y"}} foo<b{{end}}`,924 `"<" in attribute name: " foo<b"`,925 },926 {927 `<script>reverseList = [{{template "t"}}]</script>` +928 // Missing " after recursive call.929 `{{define "t"}}{{if .Tail}}{{template "t" .Tail}}{{end}}{{.Head}}",{{end}}`,930 `: cannot compute output context for template t$htmltemplate_stateJS_elementScript`,931 },932 {933 `<input type=button value=onclick=>`,934 `html/template:z: "=" in unquoted attr: "onclick="`,935 },936 {937 `<input type=button value= onclick=>`,938 `html/template:z: "=" in unquoted attr: "onclick="`,939 },940 {941 `<input type=button value= 1+1=2>`,942 `html/template:z: "=" in unquoted attr: "1+1=2"`,943 },944 {945 "<a class=`foo>",946 "html/template:z: \"`\" in unquoted attr: \"`foo\"",947 },948 {949 `<a style=font:'Arial'>`,950 `html/template:z: "'" in unquoted attr: "font:'Arial'"`,951 },952 {953 `<a=foo>`,954 `: expected space, attr name, or end of tag, but got "=foo>"`,955 },956 }957 for _, test := range tests {958 buf := new(bytes.Buffer)959 tmpl, err := New("z").Parse(test.input)960 if err != nil {961 t.Errorf("input=%q: unexpected parse error %s\n", test.input, err)962 continue963 }964 err = tmpl.Execute(buf, nil)965 var got string966 if err != nil {967 got = err.Error()968 }969 if test.err == "" {970 if got != "" {971 t.Errorf("input=%q: unexpected error %q", test.input, got)972 }973 continue974 }975 if !strings.Contains(got, test.err) {976 t.Errorf("input=%q: error\n\t%q\ndoes not contain expected string\n\t%q", test.input, got, test.err)977 continue978 }979 // Check that we get the same error if we call Execute again.980 if err := tmpl.Execute(buf, nil); err == nil || err.Error() != got {981 t.Errorf("input=%q: unexpected error on second call %q", test.input, err)982 }983 }984}985func TestEscapeText(t *testing.T) {986 tests := []struct {987 input string988 output context989 }{990 {991 ``,992 context{},993 },994 {995 `Hello, World!`,996 context{},997 },998 {999 // An orphaned "<" is OK.1000 `I <3 Ponies!`,1001 context{},1002 },1003 {1004 `<a`,1005 context{state: stateTag},1006 },1007 {1008 `<a `,1009 context{state: stateTag},1010 },1011 {1012 `<a>`,1013 context{state: stateText},1014 },1015 {1016 `<a href`,1017 context{state: stateAttrName, attr: attrURL},1018 },1019 {1020 `<a on`,1021 context{state: stateAttrName, attr: attrScript},1022 },1023 {1024 `<a href `,1025 context{state: stateAfterName, attr: attrURL},1026 },1027 {1028 `<a style = `,1029 context{state: stateBeforeValue, attr: attrStyle},1030 },1031 {1032 `<a href=`,1033 context{state: stateBeforeValue, attr: attrURL},1034 },1035 {1036 `<a href=x`,1037 context{state: stateURL, delim: delimSpaceOrTagEnd, urlPart: urlPartPreQuery, attr: attrURL},1038 },1039 {1040 `<a href=x `,1041 context{state: stateTag},1042 },1043 {1044 `<a href=>`,1045 context{state: stateText},1046 },1047 {1048 `<a href=x>`,1049 context{state: stateText},1050 },1051 {1052 `<a href ='`,1053 context{state: stateURL, delim: delimSingleQuote, attr: attrURL},1054 },1055 {1056 `<a href=''`,1057 context{state: stateTag},1058 },1059 {1060 `<a href= "`,1061 context{state: stateURL, delim: delimDoubleQuote, attr: attrURL},1062 },1063 {1064 `<a href=""`,1065 context{state: stateTag},1066 },1067 {1068 `<a title="`,1069 context{state: stateAttr, delim: delimDoubleQuote},1070 },1071 {1072 `<a HREF='http:`,1073 context{state: stateURL, delim: delimSingleQuote, urlPart: urlPartPreQuery, attr: attrURL},1074 },1075 {1076 `<a Href='/`,1077 context{state: stateURL, delim: delimSingleQuote, urlPart: urlPartPreQuery, attr: attrURL},1078 },1079 {1080 `<a href='"`,1081 context{state: stateURL, delim: delimSingleQuote, urlPart: urlPartPreQuery, attr: attrURL},1082 },1083 {1084 `<a href="'`,1085 context{state: stateURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrURL},1086 },1087 {1088 `<a href=''`,1089 context{state: stateURL, delim: delimSingleQuote, urlPart: urlPartPreQuery, attr: attrURL},1090 },1091 {1092 `<a href=""`,1093 context{state: stateURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrURL},1094 },1095 {1096 `<a href=""`,1097 context{state: stateURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrURL},1098 },1099 {1100 `<a href="`,1101 context{state: stateURL, delim: delimSpaceOrTagEnd, urlPart: urlPartPreQuery, attr: attrURL},1102 },1103 {1104 `<img alt="1">`,1105 context{state: stateText},1106 },1107 {1108 `<img alt="1>"`,1109 context{state: stateTag},1110 },1111 {1112 `<img alt="1>">`,1113 context{state: stateText},1114 },1115 {1116 `<input checked type="checkbox"`,1117 context{state: stateTag},1118 },1119 {1120 `<a onclick="`,1121 context{state: stateJS, delim: delimDoubleQuote, attr: attrScript},1122 },1123 {1124 `<a onclick="//foo`,1125 context{state: stateJSLineCmt, delim: delimDoubleQuote, attr: attrScript},1126 },1127 {1128 "<a onclick='//\n",1129 context{state: stateJS, delim: delimSingleQuote, attr: attrScript},1130 },1131 {1132 "<a onclick='//\r\n",1133 context{state: stateJS, delim: delimSingleQuote, attr: attrScript},1134 },1135 {1136 "<a onclick='//\u2028",1137 context{state: stateJS, delim: delimSingleQuote, attr: attrScript},1138 },1139 {1140 `<a onclick="/*`,1141 context{state: stateJSBlockCmt, delim: delimDoubleQuote, attr: attrScript},1142 },1143 {1144 `<a onclick="/*/`,1145 context{state: stateJSBlockCmt, delim: delimDoubleQuote, attr: attrScript},1146 },1147 {1148 `<a onclick="/**/`,1149 context{state: stateJS, delim: delimDoubleQuote, attr: attrScript},1150 },1151 {1152 `<a onkeypress=""`,1153 context{state: stateJSDqStr, delim: delimDoubleQuote, attr: attrScript},1154 },1155 {1156 `<a onclick='"foo"`,1157 context{state: stateJS, delim: delimSingleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1158 },1159 {1160 `<a onclick='foo'`,1161 context{state: stateJS, delim: delimSpaceOrTagEnd, jsCtx: jsCtxDivOp, attr: attrScript},1162 },1163 {1164 `<a onclick='foo`,1165 context{state: stateJSSqStr, delim: delimSpaceOrTagEnd, attr: attrScript},1166 },1167 {1168 `<a onclick=""foo'`,1169 context{state: stateJSDqStr, delim: delimDoubleQuote, attr: attrScript},1170 },1171 {1172 `<a onclick="'foo"`,1173 context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},1174 },1175 {1176 `<A ONCLICK="'`,1177 context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},1178 },1179 {1180 `<a onclick="/`,1181 context{state: stateJSRegexp, delim: delimDoubleQuote, attr: attrScript},1182 },1183 {1184 `<a onclick="'foo'`,1185 context{state: stateJS, delim: delimDoubleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1186 },1187 {1188 `<a onclick="'foo\'`,1189 context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},1190 },1191 {1192 `<a onclick="'foo\'`,1193 context{state: stateJSSqStr, delim: delimDoubleQuote, attr: attrScript},1194 },1195 {1196 `<a onclick="/foo/`,1197 context{state: stateJS, delim: delimDoubleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1198 },1199 {1200 `<script>/foo/ /=`,1201 context{state: stateJS, element: elementScript},1202 },1203 {1204 `<a onclick="1 /foo`,1205 context{state: stateJS, delim: delimDoubleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1206 },1207 {1208 `<a onclick="1 /*c*/ /foo`,1209 context{state: stateJS, delim: delimDoubleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1210 },1211 {1212 `<a onclick="/foo[/]`,1213 context{state: stateJSRegexp, delim: delimDoubleQuote, attr: attrScript},1214 },1215 {1216 `<a onclick="/foo\/`,1217 context{state: stateJSRegexp, delim: delimDoubleQuote, attr: attrScript},1218 },1219 {1220 `<a onclick="/foo/`,1221 context{state: stateJS, delim: delimDoubleQuote, jsCtx: jsCtxDivOp, attr: attrScript},1222 },1223 {1224 `<input checked style="`,1225 context{state: stateCSS, delim: delimDoubleQuote, attr: attrStyle},1226 },1227 {1228 `<a style="//`,1229 context{state: stateCSSLineCmt, delim: delimDoubleQuote, attr: attrStyle},1230 },1231 {1232 `<a style="//</script>`,1233 context{state: stateCSSLineCmt, delim: delimDoubleQuote, attr: attrStyle},1234 },1235 {1236 "<a style='//\n",1237 context{state: stateCSS, delim: delimSingleQuote, attr: attrStyle},1238 },1239 {1240 "<a style='//\r",1241 context{state: stateCSS, delim: delimSingleQuote, attr: attrStyle},1242 },1243 {1244 `<a style="/*`,1245 context{state: stateCSSBlockCmt, delim: delimDoubleQuote, attr: attrStyle},1246 },1247 {1248 `<a style="/*/`,1249 context{state: stateCSSBlockCmt, delim: delimDoubleQuote, attr: attrStyle},1250 },1251 {1252 `<a style="/**/`,1253 context{state: stateCSS, delim: delimDoubleQuote, attr: attrStyle},1254 },1255 {1256 `<a style="background: '`,1257 context{state: stateCSSSqStr, delim: delimDoubleQuote, attr: attrStyle},1258 },1259 {1260 `<a style="background: "`,1261 context{state: stateCSSDqStr, delim: delimDoubleQuote, attr: attrStyle},1262 },1263 {1264 `<a style="background: '/foo?img=`,1265 context{state: stateCSSSqStr, delim: delimDoubleQuote, urlPart: urlPartQueryOrFrag, attr: attrStyle},1266 },1267 {1268 `<a style="background: '/`,1269 context{state: stateCSSSqStr, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1270 },1271 {1272 `<a style="background: url("/`,1273 context{state: stateCSSDqURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1274 },1275 {1276 `<a style="background: url('/`,1277 context{state: stateCSSSqURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1278 },1279 {1280 `<a style="background: url('/)`,1281 context{state: stateCSSSqURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1282 },1283 {1284 `<a style="background: url('/ `,1285 context{state: stateCSSSqURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1286 },1287 {1288 `<a style="background: url(/`,1289 context{state: stateCSSURL, delim: delimDoubleQuote, urlPart: urlPartPreQuery, attr: attrStyle},1290 },1291 {1292 `<a style="background: url( `,1293 context{state: stateCSSURL, delim: delimDoubleQuote, attr: attrStyle},1294 },1295 {1296 `<a style="background: url( /image?name=`,1297 context{state: stateCSSURL, delim: delimDoubleQuote, urlPart: urlPartQueryOrFrag, attr: attrStyle},1298 },1299 {1300 `<a style="background: url(x)`,1301 context{state: stateCSS, delim: delimDoubleQuote, attr: attrStyle},1302 },1303 {1304 `<a style="background: url('x'`,1305 context{state: stateCSS, delim: delimDoubleQuote, attr: attrStyle},1306 },1307 {1308 `<a style="background: url( x `,1309 context{state: stateCSS, delim: delimDoubleQuote, attr: attrStyle},1310 },1311 {1312 `<!-- foo`,1313 context{state: stateHTMLCmt},1314 },1315 {1316 `<!-->`,1317 context{state: stateHTMLCmt},1318 },1319 {1320 `<!--->`,1321 context{state: stateHTMLCmt},1322 },1323 {1324 `<!-- foo -->`,1325 context{state: stateText},1326 },1327 {1328 `<script`,1329 context{state: stateTag, element: elementScript},1330 },1331 {1332 `<script `,1333 context{state: stateTag, element: elementScript},1334 },1335 {1336 `<script src="foo.js" `,1337 context{state: stateTag, element: elementScript},1338 },1339 {1340 `<script src='foo.js' `,1341 context{state: stateTag, element: elementScript},1342 },1343 {1344 `<script type=text/javascript `,1345 context{state: stateTag, element: elementScript},1346 },1347 {1348 `<script>foo`,1349 context{state: stateJS, jsCtx: jsCtxDivOp, element: elementScript},1350 },1351 {1352 `<script>foo</script>`,1353 context{state: stateText},1354 },1355 {1356 `<script>foo</script><!--`,1357 context{state: stateHTMLCmt},1358 },1359 {1360 `<script>document.write("<p>foo</p>");`,1361 context{state: stateJS, element: elementScript},1362 },1363 {1364 `<script>document.write("<p>foo<\/script>");`,1365 context{state: stateJS, element: elementScript},1366 },1367 {1368 `<script>document.write("<script>alert(1)</script>");`,1369 context{state: stateText},1370 },1371 {1372 `<Script>`,1373 context{state: stateJS, element: elementScript},1374 },1375 {1376 `<SCRIPT>foo`,1377 context{state: stateJS, jsCtx: jsCtxDivOp, element: elementScript},1378 },1379 {1380 `<textarea>value`,1381 context{state: stateRCDATA, element: elementTextarea},1382 },1383 {1384 `<textarea>value</TEXTAREA>`,1385 context{state: stateText},1386 },1387 {1388 `<textarea name=html><b`,1389 context{state: stateRCDATA, element: elementTextarea},1390 },1391 {1392 `<title>value`,1393 context{state: stateRCDATA, element: elementTitle},1394 },1395 {1396 `<style>value`,1397 context{state: stateCSS, element: elementStyle},1398 },1399 {1400 `<a xlink:href`,1401 context{state: stateAttrName, attr: attrURL},1402 },1403 {1404 `<a xmlns`,1405 context{state: stateAttrName, attr: attrURL},1406 },1407 {1408 `<a xmlns:foo`,1409 context{state: stateAttrName, attr: attrURL},1410 },1411 {1412 `<a xmlnsxyz`,1413 context{state: stateAttrName},1414 },1415 {1416 `<a data-url`,1417 context{state: stateAttrName, attr: attrURL},1418 },1419 {1420 `<a data-iconUri`,1421 context{state: stateAttrName, attr: attrURL},1422 },1423 {1424 `<a data-urlItem`,1425 context{state: stateAttrName, attr: attrURL},1426 },1427 {1428 `<a g:`,1429 context{state: stateAttrName},1430 },1431 {1432 `<a g:url`,1433 context{state: stateAttrName, attr: attrURL},1434 },1435 {1436 `<a g:iconUri`,1437 context{state: stateAttrName, attr: attrURL},1438 },1439 {1440 `<a g:urlItem`,1441 context{state: stateAttrName, attr: attrURL},1442 },1443 {1444 `<a g:value`,1445 context{state: stateAttrName},1446 },1447 {1448 `<a svg:style='`,1449 context{state: stateCSS, delim: delimSingleQuote, attr: attrStyle},1450 },1451 {1452 `<svg:font-face`,1453 context{state: stateTag},1454 },1455 {1456 `<svg:a svg:onclick="`,1457 context{state: stateJS, delim: delimDoubleQuote, attr: attrScript},1458 },1459 {1460 `<svg:a svg:onclick="x()">`,1461 context{},1462 },1463 }1464 for _, test := range tests {1465 b, e := []byte(test.input), newEscaper(nil)1466 c := e.escapeText(context{}, &parse.TextNode{NodeType: parse.NodeText, Text: b})1467 if !test.output.eq(c) {1468 t.Errorf("input %q: want context\n\t%v\ngot\n\t%v", test.input, test.output, c)1469 continue1470 }1471 if test.input != string(b) {1472 t.Errorf("input %q: text node was modified: want %q got %q", test.input, test.input, b)1473 continue1474 }1475 }1476}1477func TestEnsurePipelineContains(t *testing.T) {1478 tests := []struct {1479 input, output string1480 ids []string1481 }{1482 {1483 "{{.X}}",1484 ".X",1485 []string{},1486 },1487 {1488 "{{.X | html}}",1489 ".X | html",1490 []string{},1491 },1492 {1493 "{{.X}}",1494 ".X | html",1495 []string{"html"},1496 },1497 {1498 "{{.X | html}}",1499 ".X | html | urlquery",1500 []string{"urlquery"},1501 },1502 {1503 "{{.X | html | urlquery}}",1504 ".X | html | urlquery",1505 []string{"urlquery"},1506 },1507 {1508 "{{.X | html | urlquery}}",1509 ".X | html | urlquery",1510 []string{"html", "urlquery"},1511 },1512 {1513 "{{.X | html | urlquery}}",1514 ".X | html | urlquery",1515 []string{"html"},1516 },1517 {1518 "{{.X | urlquery}}",1519 ".X | html | urlquery",1520 []string{"html", "urlquery"},1521 },1522 {1523 "{{.X | html | print}}",1524 ".X | urlquery | html | print",1525 []string{"urlquery", "html"},1526 },1527 {1528 "{{($).X | html | print}}",1529 "($).X | urlquery | html | print",1530 []string{"urlquery", "html"},1531 },1532 {1533 "{{.X | print 2 | .f 3}}",1534 ".X | print 2 | .f 3 | urlquery | html",1535 []string{"urlquery", "html"},1536 },1537 {1538 "{{.X | html | print 2 | .f 3}}",1539 ".X | urlquery | html | print 2 | .f 3",1540 []string{"urlquery", "html"},1541 },1542 {1543 // covering issue 108011544 "{{.X | js.x }}",1545 ".X | js.x | urlquery | html",1546 []string{"urlquery", "html"},1547 },1548 {1549 // covering issue 108011550 "{{.X | (print 12 | js).x }}",1551 ".X | (print 12 | js).x | urlquery | html",1552 []string{"urlquery", "html"},1553 },1554 }1555 for i, test := range tests {1556 tmpl := template.Must(template.New("test").Parse(test.input))1557 action, ok := (tmpl.Tree.Root.Nodes[0].(*parse.ActionNode))1558 if !ok {1559 t.Errorf("#%d: First node is not an action: %s", i, test.input)1560 continue1561 }1562 pipe := action.Pipe1563 ensurePipelineContains(pipe, test.ids)1564 got := pipe.String()1565 if got != test.output {1566 t.Errorf("#%d: %s, %v: want\n\t%s\ngot\n\t%s", i, test.input, test.ids, test.output, got)1567 }1568 }1569}1570func TestEscapeMalformedPipelines(t *testing.T) {1571 tests := []string{1572 "{{ 0 | $ }}",1573 "{{ 0 | $ | urlquery }}",1574 "{{ 0 | $ | urlquery | html }}",1575 "{{ 0 | (nil) }}",1576 "{{ 0 | (nil) | html }}",1577 "{{ 0 | (nil) | html | urlquery }}",1578 }1579 for _, test := range tests {1580 var b bytes.Buffer1581 tmpl, err := New("test").Parse(test)1582 if err != nil {1583 t.Errorf("failed to parse set: %q", err)1584 }1585 err = tmpl.Execute(&b, nil)1586 if err == nil {1587 t.Errorf("Expected error for %q", test)1588 }1589 }1590}1591func TestEscapeErrorsNotIgnorable(t *testing.T) {1592 var b bytes.Buffer1593 tmpl, _ := New("dangerous").Parse("<a")1594 err := tmpl.Execute(&b, nil)1595 if err == nil {1596 t.Errorf("Expected error")1597 } else if b.Len() != 0 {1598 t.Errorf("Emitted output despite escaping failure")1599 }1600}1601func TestEscapeSetErrorsNotIgnorable(t *testing.T) {1602 var b bytes.Buffer1603 tmpl, err := New("root").Parse(`{{define "t"}}<a{{end}}`)1604 if err != nil {1605 t.Errorf("failed to parse set: %q", err)1606 }1607 err = tmpl.ExecuteTemplate(&b, "t", nil)1608 if err == nil {1609 t.Errorf("Expected error")1610 } else if b.Len() != 0 {1611 t.Errorf("Emitted output despite escaping failure")1612 }1613}1614func TestRedundantFuncs(t *testing.T) {1615 inputs := []interface{}{1616 "\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f" +1617 "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +1618 ` !"#$%&'()*+,-./` +1619 `0123456789:;<=>?` +1620 `@ABCDEFGHIJKLMNO` +1621 `PQRSTUVWXYZ[\]^_` +1622 "`abcdefghijklmno" +1623 "pqrstuvwxyz{|}~\x7f" +1624 "\u00A0\u0100\u2028\u2029\ufeff\ufdec\ufffd\uffff\U0001D11E" +1625 "&%22\\",1626 CSS(`a[href =~ "//example.com"]#foo`),1627 HTML(`Hello, <b>World</b> &tc!`),1628 HTMLAttr(` dir="ltr"`),1629 JS(`c && alert("Hello, World!");`),1630 JSStr(`Hello, World & O'Reilly\x21`),1631 URL(`greeting=H%69&addressee=(World)`),1632 }1633 for n0, m := range redundantFuncs {1634 f0 := funcMap[n0].(func(...interface{}) string)1635 for n1 := range m {1636 f1 := funcMap[n1].(func(...interface{}) string)1637 for _, input := range inputs {1638 want := f0(input)1639 if got := f1(want); want != got {1640 t.Errorf("%s %s with %T %q: want\n\t%q,\ngot\n\t%q", n0, n1, input, input, want, got)1641 }1642 }1643 }1644 }1645}1646func TestIndirectPrint(t *testing.T) {1647 a := 31648 ap := &a1649 b := "hello"1650 bp := &b1651 bpp := &bp1652 tmpl := Must(New("t").Parse(`{{.}}`))1653 var buf bytes.Buffer1654 err := tmpl.Execute(&buf, ap)1655 if err != nil {1656 t.Errorf("Unexpected error: %s", err)1657 } else if buf.String() != "3" {1658 t.Errorf(`Expected "3"; got %q`, buf.String())1659 }1660 buf.Reset()1661 err = tmpl.Execute(&buf, bpp)1662 if err != nil {1663 t.Errorf("Unexpected error: %s", err)1664 } else if buf.String() != "hello" {1665 t.Errorf(`Expected "hello"; got %q`, buf.String())1666 }1667}1668// This is a test for issue 3272.1669func TestEmptyTemplate(t *testing.T) {1670 page := Must(New("page").ParseFiles(os.DevNull))1671 if err := page.ExecuteTemplate(os.Stdout, "page", "nothing"); err == nil {1672 t.Fatal("expected error")1673 }1674}1675type Issue7379 int1676func (Issue7379) SomeMethod(x int) string {1677 return fmt.Sprintf("<%d>", x)1678}1679// This is a test for issue 7379: type assertion error caused panic, and then1680// the code to handle the panic breaks escaping. It's hard to see the second1681// problem once the first is fixed, but its fix is trivial so we let that go. See1682// the discussion for issue 7379.1683func TestPipeToMethodIsEscaped(t *testing.T) {1684 tmpl := Must(New("x").Parse("<html>{{0 | .SomeMethod}}</html>\n"))1685 tryExec := func() string {1686 defer func() {1687 panicValue := recover()1688 if panicValue != nil {1689 t.Errorf("panicked: %v\n", panicValue)1690 }1691 }()1692 var b bytes.Buffer1693 tmpl.Execute(&b, Issue7379(0))1694 return b.String()1695 }1696 for i := 0; i < 3; i++ {1697 str := tryExec()1698 const expect = "<html><0></html>\n"1699 if str != expect {1700 t.Errorf("expected %q got %q", expect, str)1701 }1702 }1703}1704// Unlike text/template, html/template crashed if given an incomplete1705// template, that is, a template that had been named but not given any content.1706// This is issue #10204.1707func TestErrorOnUndefined(t *testing.T) {1708 tmpl := New("undefined")1709 err := tmpl.Execute(nil, nil)1710 if err == nil {1711 t.Error("expected error")1712 }1713 if !strings.Contains(err.Error(), "incomplete") {1714 t.Errorf("expected error about incomplete template; got %s", err)1715 }1716}1717func BenchmarkEscapedExecute(b *testing.B) {1718 tmpl := Must(New("t").Parse(`<a onclick="alert('{{.}}')">{{.}}</a>`))1719 var buf bytes.Buffer1720 b.ResetTimer()1721 for i := 0; i < b.N; i++ {1722 tmpl.Execute(&buf, "foo & 'bar' & baz")1723 buf.Reset()1724 }1725}...
transition.go
Source:transition.go
1// Copyright 2011 The Go Authors. All rights reserved.2// Use of this source code is governed by a BSD-style3// license that can be found in the LICENSE file.4package template5import (6 "bytes"7 "strings"8)9// transitionFunc is the array of context transition functions for text nodes.10// A transition function takes a context and template text input, and returns11// the updated context and the number of bytes consumed from the front of the12// input.13var transitionFunc = [...]func(context, []byte) (context, int){14 stateText: tText,15 stateTag: tTag,16 stateAttrName: tAttrName,17 stateAfterName: tAfterName,18 stateBeforeValue: tBeforeValue,19 stateHTMLCmt: tHTMLCmt,20 stateRCDATA: tSpecialTagEnd,21 stateAttr: tAttr,22 stateURL: tURL,23 stateJS: tJS,24 stateJSDqStr: tJSDelimited,25 stateJSSqStr: tJSDelimited,26 stateJSRegexp: tJSDelimited,27 stateJSBlockCmt: tBlockCmt,28 stateJSLineCmt: tLineCmt,29 stateCSS: tCSS,30 stateCSSDqStr: tCSSStr,31 stateCSSSqStr: tCSSStr,32 stateCSSDqURL: tCSSStr,33 stateCSSSqURL: tCSSStr,34 stateCSSURL: tCSSStr,35 stateCSSBlockCmt: tBlockCmt,36 stateCSSLineCmt: tLineCmt,37 stateError: tError,38}39var commentStart = []byte("<!--")40var commentEnd = []byte("-->")41// tText is the context transition function for the text state.42func tText(c context, s []byte) (context, int) {43 k := 044 for {45 i := k + bytes.IndexByte(s[k:], '<')46 if i < k || i+1 == len(s) {47 return c, len(s)48 } else if i+4 <= len(s) && bytes.Equal(commentStart, s[i:i+4]) {49 return context{state: stateHTMLCmt}, i + 450 }51 i++52 end := false53 if s[i] == '/' {54 if i+1 == len(s) {55 return c, len(s)56 }57 end, i = true, i+158 }59 j, e := eatTagName(s, i)60 if j != i {61 if end {62 e = elementNone63 }64 // We've found an HTML tag.65 return context{state: stateTag, element: e}, j66 }67 k = j68 }69}70var elementContentType = [...]state{71 elementNone: stateText,72 elementScript: stateJS,73 elementStyle: stateCSS,74 elementTextarea: stateRCDATA,75 elementTitle: stateRCDATA,76}77// tTag is the context transition function for the tag state.78func tTag(c context, s []byte) (context, int) {79 // Find the attribute name.80 i := eatWhiteSpace(s, 0)81 if i == len(s) {82 return c, len(s)83 }84 if s[i] == '>' {85 return context{86 state: elementContentType[c.element],87 element: c.element,88 }, i + 189 }90 j, err := eatAttrName(s, i)91 if err != nil {92 return context{state: stateError, err: err}, len(s)93 }94 state, attr := stateTag, attrNone95 if i == j {96 return context{97 state: stateError,98 err: errorf(ErrBadHTML, nil, 0, "expected space, attr name, or end of tag, but got %q", s[i:]),99 }, len(s)100 }101 switch attrType(string(s[i:j])) {102 case contentTypeURL:103 attr = attrURL104 case contentTypeCSS:105 attr = attrStyle106 case contentTypeJS:107 attr = attrScript108 }109 if j == len(s) {110 state = stateAttrName111 } else {112 state = stateAfterName113 }114 return context{state: state, element: c.element, attr: attr}, j115}116// tAttrName is the context transition function for stateAttrName.117func tAttrName(c context, s []byte) (context, int) {118 i, err := eatAttrName(s, 0)119 if err != nil {120 return context{state: stateError, err: err}, len(s)121 } else if i != len(s) {122 c.state = stateAfterName123 }124 return c, i125}126// tAfterName is the context transition function for stateAfterName.127func tAfterName(c context, s []byte) (context, int) {128 // Look for the start of the value.129 i := eatWhiteSpace(s, 0)130 if i == len(s) {131 return c, len(s)132 } else if s[i] != '=' {133 // Occurs due to tag ending '>', and valueless attribute.134 c.state = stateTag135 return c, i136 }137 c.state = stateBeforeValue138 // Consume the "=".139 return c, i + 1140}141var attrStartStates = [...]state{142 attrNone: stateAttr,143 attrScript: stateJS,144 attrStyle: stateCSS,145 attrURL: stateURL,146}147// tBeforeValue is the context transition function for stateBeforeValue.148func tBeforeValue(c context, s []byte) (context, int) {149 i := eatWhiteSpace(s, 0)150 if i == len(s) {151 return c, len(s)152 }153 // Find the attribute delimiter.154 delim := delimSpaceOrTagEnd155 switch s[i] {156 case '\'':157 delim, i = delimSingleQuote, i+1158 case '"':159 delim, i = delimDoubleQuote, i+1160 }161 c.state, c.delim = attrStartStates[c.attr], delim162 return c, i163}164// tHTMLCmt is the context transition function for stateHTMLCmt.165func tHTMLCmt(c context, s []byte) (context, int) {166 if i := bytes.Index(s, commentEnd); i != -1 {167 return context{}, i + 3168 }169 return c, len(s)170}171// specialTagEndMarkers maps element types to the character sequence that172// case-insensitively signals the end of the special tag body.173var specialTagEndMarkers = [...][]byte{174 elementScript: []byte("script"),175 elementStyle: []byte("style"),176 elementTextarea: []byte("textarea"),177 elementTitle: []byte("title"),178}179var (180 specialTagEndPrefix = []byte("</")181 tagEndSeparators = []byte("> \t\n\f/")182)183// tSpecialTagEnd is the context transition function for raw text and RCDATA184// element states.185func tSpecialTagEnd(c context, s []byte) (context, int) {186 if c.element != elementNone {187 if i := indexTagEnd(s, specialTagEndMarkers[c.element]); i != -1 {188 return context{}, i189 }190 }191 return c, len(s)192}193// indexTagEnd finds the index of a special tag end in a case insensitive way, or returns -1194func indexTagEnd(s []byte, tag []byte) int {195 res := 0196 plen := len(specialTagEndPrefix)197 for len(s) > 0 {198 // Try to find the tag end prefix first199 i := bytes.Index(s, specialTagEndPrefix)200 if i == -1 {201 return i202 }203 s = s[i+plen:]204 // Try to match the actual tag if there is still space for it205 if len(tag) <= len(s) && bytes.EqualFold(tag, s[:len(tag)]) {206 s = s[len(tag):]207 // Check the tag is followed by a proper separator208 if len(s) > 0 && bytes.IndexByte(tagEndSeparators, s[0]) != -1 {209 return res + i210 }211 res += len(tag)212 }213 res += i + plen214 }215 return -1216}217// tAttr is the context transition function for the attribute state.218func tAttr(c context, s []byte) (context, int) {219 return c, len(s)220}221// tURL is the context transition function for the URL state.222func tURL(c context, s []byte) (context, int) {223 if bytes.IndexAny(s, "#?") >= 0 {224 c.urlPart = urlPartQueryOrFrag225 } else if len(s) != eatWhiteSpace(s, 0) && c.urlPart == urlPartNone {226 // HTML5 uses "Valid URL potentially surrounded by spaces" for227 // attrs: http://www.w3.org/TR/html5/index.html#attributes-1228 c.urlPart = urlPartPreQuery229 }230 return c, len(s)231}232// tJS is the context transition function for the JS state.233func tJS(c context, s []byte) (context, int) {234 i := bytes.IndexAny(s, `"'/`)235 if i == -1 {236 // Entire input is non string, comment, regexp tokens.237 c.jsCtx = nextJSCtx(s, c.jsCtx)238 return c, len(s)239 }240 c.jsCtx = nextJSCtx(s[:i], c.jsCtx)241 switch s[i] {242 case '"':243 c.state, c.jsCtx = stateJSDqStr, jsCtxRegexp244 case '\'':245 c.state, c.jsCtx = stateJSSqStr, jsCtxRegexp246 case '/':247 switch {248 case i+1 < len(s) && s[i+1] == '/':249 c.state, i = stateJSLineCmt, i+1250 case i+1 < len(s) && s[i+1] == '*':251 c.state, i = stateJSBlockCmt, i+1252 case c.jsCtx == jsCtxRegexp:253 c.state = stateJSRegexp254 case c.jsCtx == jsCtxDivOp:255 c.jsCtx = jsCtxRegexp256 default:257 return context{258 state: stateError,259 err: errorf(ErrSlashAmbig, nil, 0, "'/' could start a division or regexp: %.32q", s[i:]),260 }, len(s)261 }262 default:263 panic("unreachable")264 }265 return c, i + 1266}267// tJSDelimited is the context transition function for the JS string and regexp268// states.269func tJSDelimited(c context, s []byte) (context, int) {270 specials := `\"`271 switch c.state {272 case stateJSSqStr:273 specials = `\'`274 case stateJSRegexp:275 specials = `\/[]`276 }277 k, inCharset := 0, false278 for {279 i := k + bytes.IndexAny(s[k:], specials)280 if i < k {281 break282 }283 switch s[i] {284 case '\\':285 i++286 if i == len(s) {287 return context{288 state: stateError,289 err: errorf(ErrPartialEscape, nil, 0, "unfinished escape sequence in JS string: %q", s),290 }, len(s)291 }292 case '[':293 inCharset = true294 case ']':295 inCharset = false296 default:297 // end delimiter298 if !inCharset {299 c.state, c.jsCtx = stateJS, jsCtxDivOp300 return c, i + 1301 }302 }303 k = i + 1304 }305 if inCharset {306 // This can be fixed by making context richer if interpolation307 // into charsets is desired.308 return context{309 state: stateError,310 err: errorf(ErrPartialCharset, nil, 0, "unfinished JS regexp charset: %q", s),311 }, len(s)312 }313 return c, len(s)314}315var blockCommentEnd = []byte("*/")316// tBlockCmt is the context transition function for /*comment*/ states.317func tBlockCmt(c context, s []byte) (context, int) {318 i := bytes.Index(s, blockCommentEnd)319 if i == -1 {320 return c, len(s)321 }322 switch c.state {323 case stateJSBlockCmt:324 c.state = stateJS325 case stateCSSBlockCmt:326 c.state = stateCSS327 default:328 panic(c.state.String())329 }330 return c, i + 2331}332// tLineCmt is the context transition function for //comment states.333func tLineCmt(c context, s []byte) (context, int) {334 var lineTerminators string335 var endState state336 switch c.state {337 case stateJSLineCmt:338 lineTerminators, endState = "\n\r\u2028\u2029", stateJS339 case stateCSSLineCmt:340 lineTerminators, endState = "\n\f\r", stateCSS341 // Line comments are not part of any published CSS standard but342 // are supported by the 4 major browsers.343 // This defines line comments as344 // LINECOMMENT ::= "//" [^\n\f\d]*345 // since http://www.w3.org/TR/css3-syntax/#SUBTOK-nl defines346 // newlines:347 // nl ::= #xA | #xD #xA | #xD | #xC348 default:349 panic(c.state.String())350 }351 i := bytes.IndexAny(s, lineTerminators)352 if i == -1 {353 return c, len(s)354 }355 c.state = endState356 // Per section 7.4 of EcmaScript 5 : http://es5.github.com/#x7.4357 // "However, the LineTerminator at the end of the line is not358 // considered to be part of the single-line comment; it is359 // recognized separately by the lexical grammar and becomes part360 // of the stream of input elements for the syntactic grammar."361 return c, i362}363// tCSS is the context transition function for the CSS state.364func tCSS(c context, s []byte) (context, int) {365 // CSS quoted strings are almost never used except for:366 // (1) URLs as in background: "/foo.png"367 // (2) Multiword font-names as in font-family: "Times New Roman"368 // (3) List separators in content values as in inline-lists:369 // <style>370 // ul.inlineList { list-style: none; padding:0 }371 // ul.inlineList > li { display: inline }372 // ul.inlineList > li:before { content: ", " }373 // ul.inlineList > li:first-child:before { content: "" }374 // </style>375 // <ul class=inlineList><li>One<li>Two<li>Three</ul>376 // (4) Attribute value selectors as in a[href="http://example.com/"]377 //378 // We conservatively treat all strings as URLs, but make some379 // allowances to avoid confusion.380 //381 // In (1), our conservative assumption is justified.382 // In (2), valid font names do not contain ':', '?', or '#', so our383 // conservative assumption is fine since we will never transition past384 // urlPartPreQuery.385 // In (3), our protocol heuristic should not be tripped, and there386 // should not be non-space content after a '?' or '#', so as long as387 // we only %-encode RFC 3986 reserved characters we are ok.388 // In (4), we should URL escape for URL attributes, and for others we389 // have the attribute name available if our conservative assumption390 // proves problematic for real code.391 k := 0392 for {393 i := k + bytes.IndexAny(s[k:], `("'/`)394 if i < k {395 return c, len(s)396 }397 switch s[i] {398 case '(':399 // Look for url to the left.400 p := bytes.TrimRight(s[:i], "\t\n\f\r ")401 if endsWithCSSKeyword(p, "url") {402 j := len(s) - len(bytes.TrimLeft(s[i+1:], "\t\n\f\r "))403 switch {404 case j != len(s) && s[j] == '"':405 c.state, j = stateCSSDqURL, j+1406 case j != len(s) && s[j] == '\'':407 c.state, j = stateCSSSqURL, j+1408 default:409 c.state = stateCSSURL410 }411 return c, j412 }413 case '/':414 if i+1 < len(s) {415 switch s[i+1] {416 case '/':417 c.state = stateCSSLineCmt418 return c, i + 2419 case '*':420 c.state = stateCSSBlockCmt421 return c, i + 2422 }423 }424 case '"':425 c.state = stateCSSDqStr426 return c, i + 1427 case '\'':428 c.state = stateCSSSqStr429 return c, i + 1430 }431 k = i + 1432 }433}434// tCSSStr is the context transition function for the CSS string and URL states.435func tCSSStr(c context, s []byte) (context, int) {436 var endAndEsc string437 switch c.state {438 case stateCSSDqStr, stateCSSDqURL:439 endAndEsc = `\"`440 case stateCSSSqStr, stateCSSSqURL:441 endAndEsc = `\'`442 case stateCSSURL:443 // Unquoted URLs end with a newline or close parenthesis.444 // The below includes the wc (whitespace character) and nl.445 endAndEsc = "\\\t\n\f\r )"446 default:447 panic(c.state.String())448 }449 k := 0450 for {451 i := k + bytes.IndexAny(s[k:], endAndEsc)452 if i < k {453 c, nread := tURL(c, decodeCSS(s[k:]))454 return c, k + nread455 }456 if s[i] == '\\' {457 i++458 if i == len(s) {459 return context{460 state: stateError,461 err: errorf(ErrPartialEscape, nil, 0, "unfinished escape sequence in CSS string: %q", s),462 }, len(s)463 }464 } else {465 c.state = stateCSS466 return c, i + 1467 }468 c, _ = tURL(c, decodeCSS(s[:i+1]))469 k = i + 1470 }471}472// tError is the context transition function for the error state.473func tError(c context, s []byte) (context, int) {474 return c, len(s)475}476// eatAttrName returns the largest j such that s[i:j] is an attribute name.477// It returns an error if s[i:] does not look like it begins with an478// attribute name, such as encountering a quote mark without a preceding479// equals sign.480func eatAttrName(s []byte, i int) (int, *Error) {481 for j := i; j < len(s); j++ {482 switch s[j] {483 case ' ', '\t', '\n', '\f', '\r', '=', '>':484 return j, nil485 case '\'', '"', '<':486 // These result in a parse warning in HTML5 and are487 // indicative of serious problems if seen in an attr488 // name in a template.489 return -1, errorf(ErrBadHTML, nil, 0, "%q in attribute name: %.32q", s[j:j+1], s)490 default:491 // No-op.492 }493 }494 return len(s), nil495}496var elementNameMap = map[string]element{497 "script": elementScript,498 "style": elementStyle,499 "textarea": elementTextarea,500 "title": elementTitle,501}502// asciiAlpha reports whether c is an ASCII letter.503func asciiAlpha(c byte) bool {504 return 'A' <= c && c <= 'Z' || 'a' <= c && c <= 'z'505}506// asciiAlphaNum reports whether c is an ASCII letter or digit.507func asciiAlphaNum(c byte) bool {508 return asciiAlpha(c) || '0' <= c && c <= '9'509}510// eatTagName returns the largest j such that s[i:j] is a tag name and the tag type.511func eatTagName(s []byte, i int) (int, element) {512 if i == len(s) || !asciiAlpha(s[i]) {513 return i, elementNone514 }515 j := i + 1516 for j < len(s) {517 x := s[j]518 if asciiAlphaNum(x) {519 j++520 continue521 }522 // Allow "x-y" or "x:y" but not "x-", "-y", or "x--y".523 if (x == ':' || x == '-') && j+1 < len(s) && asciiAlphaNum(s[j+1]) {524 j += 2525 continue526 }527 break528 }529 return j, elementNameMap[strings.ToLower(string(s[i:j]))]530}531// eatWhiteSpace returns the largest j such that s[i:j] is white space.532func eatWhiteSpace(s []byte, i int) int {533 for j := i; j < len(s); j++ {534 switch s[j] {535 case ' ', '\t', '\n', '\f', '\r':536 // No-op.537 default:538 return j539 }540 }541 return len(s)542}...
Context
Using AI Code Generation
1js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", func() {2 js.Global().Call("alert", "Button Clicked")3})4js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {5 js.Global().Call("alert", "Button Clicked")6}))7js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {8 js.Global().Call("alert", "Button Clicked")9}))10js.Global().Get("document").Call("getElementById", "btn").Call("removeEventListener", "click")11js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {12 js.Global().Call("alert", "Button Clicked")13}))14js.Global().Get("document").Call("getElementById", "btn").Call("removeEventListener", "click")15js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {16 js.Global().Call("alert", "Button Clicked")17}))18js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {19 js.Global().Call("alert", "Button Clicked")20}))21js.Global().Get("document").Call("getElementById", "btn").Call("removeEventListener", "click")22js.Global().Get("document").Call("getElementById", "btn").Call("addEventListener", "click", js.FuncOf(func(this js.Value, args []js.Value) interface{} {
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Most used method in
- TestRunnerNew
- TestRunnerGetDefaultGroup
- TestRunnerOptions
- TestOptionsSettingToScript
- TestOptionsPropagationToScript
- TestMetricName
- TestSetupDataIsolation
- testSetupDataHelper
- TestSetupDataReturnValue
- TestSetupDataNoSetup
- TestConsoleInInitContext
- TestSetupDataNoReturn
- TestRunnerIntegrationImports
- TestVURunContext
- TestVURunInterrupt
- TestVURunInterruptDoesntPanic
- TestVUIntegrationGroups
- TestVUIntegrationMetrics
- TestVUIntegrationInsecureRequests
- TestVUIntegrationBlacklistOption
- TestVUIntegrationBlacklistScript
- TestVUIntegrationBlockHostnamesOption
- TestVUIntegrationBlockHostnamesScript
- TestVUIntegrationHosts
- TestVUIntegrationTLSConfig
- TestVUIntegrationOpenFunctionError
- TestVUIntegrationOpenFunctionErrorWhenSneaky
- TestVUDoesOpenUnderV0Condition
- TestVUDoesNotOpenUnderConditions
- TestVUDoesNonExistingPathnUnderConditions
- TestVUIntegrationCookiesReset
- TestVUIntegrationCookiesNoReset
- TestVUIntegrationVUID
- TestVUIntegrationClientCerts
- TestHTTPRequestInInitContext
- TestInitContextForbidden
- TestArchiveRunningIntegrity
- TestArchiveNotPanicking
- TestStuffNotPanicking
- TestPanicOnSimpleHTML
- TestSystemTags
- TestVUPanic
- runMultiFileTestCase
- TestComplicatedFileImportsForGRPC
- TestMinIterationDurationIsCancellable
- TestForceHTTP1Feature
- TestExecutionInfo
- newDevNullSampleChannel
- TestLoadOnceGlobalVars
- TestLoadExportsIsUsableInModule
- TestLoadDoesntBreakHTTPGet
- TestLoadGlobalVarsAreNotSharedBetweenVUs
- TestLoadCycle
- TestLoadCycleBinding
- TestBrowserified
- TestLoadingUnexistingModuleDoesntPanic
- TestLoadingSourceMapsDoesntErrorOut
- TestTextSummary
- TestTextSummaryWithSubMetrics
- createTestMetrics
- createTestSummary
- TestOldJSONExport
- TestRawHandleSummaryData
- TestRawHandleSummaryDataWithSetupData
- TestWrongSummaryHandlerExportTypes
- TestExceptionInHandleSummaryFallsBackToTextSummary
- NewBundle
- NewBundleFromArchive
- MakeArchive
- getExports
- instantiate
- setInitGlobals
- generateSourceMapLoader
- New
- NewFromArchive
- NewFromBundle
- newVU
- forceHTTP1
- Setup
- GetSetupData
- SetSetupData
- Teardown
- GetDefaultGroup
- GetOptions
- IsExecutable
- HandleSummary
- SetOptions
- setResolver
- parseTTL
- runPart
- getTimeoutFor
- GetID
- Activate
- RunOnce
- runFn
- incrIteration
- Error
- StackTrace
- Unwrap
- Hint
- ExitCode
- BenchmarkEmptyIteration
- NewInitContext
- newBoundInitContext
- Require
- Context
- InitEnv
- State
- Runtime
- RegisterCallback
- MakeHandledPromise
- toESModuleExports
- requireModule
- requireFile
- compileImport
- Open
- readFile
- allowOnlyOpenedFiles
- getInternalJSModules
- getJSModules
- newConsole
- newFileConsole
- Log
- Debug
- Info
- Warn
- valueString
- TestNewSharedArrayIntegration
- TestInitContextRequire
- createAndReadFile
- TestInitContextOpen
- TestRequestWithBinaryFile
- TestRequestWithMultipleBinaryFiles
- TestInitContextVU
- TestSourceMaps
- TestSourceMapsExternal
- TestSourceMapsExternalExtented
- TestSourceMapsExternalExtentedInlined
- BenchmarkHTTPRequests
- BenchmarkHTTPRequestsBase
- TestTimeoutError
- TestTimeoutErrorHint
- newTimeoutError
- TestConsoleContext
- getSimpleRunner
- extractLogger
- TestConsoleLogWithGojaNativeObject
- TestConsoleLogObjectsWithGoTypes
- TestConsoleLog
- TestConsoleLevels
- TestFileConsole
- getSimpleBundle
- TestNewBundle
- getArchive
- TestNewBundleFromArchive
- TestOpen
- TestBundleInstantiate
- TestBundleEnv
- TestBundleNotSharable
- TestBundleMakeArchive
- metricValueGetter
- summarizeMetricsToObject
- exportGroup
- getSummaryResult
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