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Viewing File: css_test.go
// Copyright 2011 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package template
import (
"strconv"
"strings"
"testing"
)
func TestEndsWithCSSKeyword(t *testing.T) {
tests := []struct {
css, kw string
want bool
}{
{"", "url", false},
{"url", "url", true},
{"URL", "url", true},
{"Url", "url", true},
{"url", "important", false},
{"important", "important", true},
{"image-url", "url", false},
{"imageurl", "url", false},
{"image url", "url", true},
}
for _, test := range tests {
got := endsWithCSSKeyword([]byte(test.css), test.kw)
if got != test.want {
t.Errorf("want %t but got %t for css=%v, kw=%v", test.want, got, test.css, test.kw)
}
}
}
func TestIsCSSNmchar(t *testing.T) {
tests := []struct {
rune rune
want bool
}{
{0, false},
{'0', true},
{'9', true},
{'A', true},
{'Z', true},
{'a', true},
{'z', true},
{'_', true},
{'-', true},
{':', false},
{';', false},
{' ', false},
{0x7f, false},
{0x80, true},
{0x1234, true},
{0xd800, false},
{0xdc00, false},
{0xfffe, false},
{0x10000, true},
{0x110000, false},
}
for _, test := range tests {
got := isCSSNmchar(test.rune)
if got != test.want {
t.Errorf("%q: want %t but got %t", string(test.rune), test.want, got)
}
}
}
func TestDecodeCSS(t *testing.T) {
tests := []struct {
css, want string
}{
{``, ``},
{`foo`, `foo`},
{`foo\`, `foo`},
{`foo\\`, `foo\`},
{`\`, ``},
{`\A`, "\n"},
{`\a`, "\n"},
{`\0a`, "\n"},
{`\00000a`, "\n"},
{`\000000a`, "\u0000a"},
{`\1234 5`, "\u1234" + "5"},
{`\1234\20 5`, "\u1234" + " 5"},
{`\1234\A 5`, "\u1234" + "\n5"},
{"\\1234\t5", "\u1234" + "5"},
{"\\1234\n5", "\u1234" + "5"},
{"\\1234\r\n5", "\u1234" + "5"},
{`\12345`, "\U00012345"},
{`\\`, `\`},
{`\\ `, `\ `},
{`\"`, `"`},
{`\'`, `'`},
{`\.`, `.`},
{`\. .`, `. .`},
{
`The \3c i\3equick\3c/i\3e,\d\A\3cspan style=\27 color:brown\27\3e brown\3c/span\3e fox jumps\2028over the \3c canine class=\22lazy\22 \3e dog\3c/canine\3e`,
"The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>",
},
}
for _, test := range tests {
got1 := string(decodeCSS([]byte(test.css)))
if got1 != test.want {
t.Errorf("%q: want\n\t%q\nbut got\n\t%q", test.css, test.want, got1)
}
recoded := cssEscaper(got1)
if got2 := string(decodeCSS([]byte(recoded))); got2 != test.want {
t.Errorf("%q: escape & decode not dual for %q", test.css, recoded)
}
}
}
func TestHexDecode(t *testing.T) {
for i := 0; i < 0x200000; i += 101 /* coprime with 16 */ {
s := strconv.FormatInt(int64(i), 16)
if got := int(hexDecode([]byte(s))); got != i {
t.Errorf("%s: want %d but got %d", s, i, got)
}
s = strings.ToUpper(s)
if got := int(hexDecode([]byte(s))); got != i {
t.Errorf("%s: want %d but got %d", s, i, got)
}
}
}
func TestSkipCSSSpace(t *testing.T) {
tests := []struct {
css, want string
}{
{"", ""},
{"foo", "foo"},
{"\n", ""},
{"\r\n", ""},
{"\r", ""},
{"\t", ""},
{" ", ""},
{"\f", ""},
{" foo", "foo"},
{" foo", " foo"},
{`\20`, `\20`},
}
for _, test := range tests {
got := string(skipCSSSpace([]byte(test.css)))
if got != test.want {
t.Errorf("%q: want %q but got %q", test.css, test.want, got)
}
}
}
func TestCSSEscaper(t *testing.T) {
input := ("\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f" +
"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
` !"#$%&'()*+,-./` +
`0123456789:;<=>?` +
`@ABCDEFGHIJKLMNO` +
`PQRSTUVWXYZ[\]^_` +
"`abcdefghijklmno" +
"pqrstuvwxyz{|}~\x7f" +
"\u00A0\u0100\u2028\u2029\ufeff\U0001D11E")
want := ("\\0\x01\x02\x03\x04\x05\x06\x07" +
"\x08\\9 \\a\x0b\\c \\d\x0E\x0F" +
"\x10\x11\x12\x13\x14\x15\x16\x17" +
"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
` !\22#$%\26\27\28\29*\2b,-.\2f ` +
`0123456789\3a\3b\3c=\3e?` +
`@ABCDEFGHIJKLMNO` +
`PQRSTUVWXYZ[\\]^_` +
"`abcdefghijklmno" +
`pqrstuvwxyz\7b|\7d~` + "\u007f" +
"\u00A0\u0100\u2028\u2029\ufeff\U0001D11E")
got := cssEscaper(input)
if got != want {
t.Errorf("encode: want\n\t%q\nbut got\n\t%q", want, got)
}
got = string(decodeCSS([]byte(got)))
if input != got {
t.Errorf("decode: want\n\t%q\nbut got\n\t%q", input, got)
}
}
func TestCSSValueFilter(t *testing.T) {
tests := []struct {
css, want string
}{
{"", ""},
{"foo", "foo"},
{"0", "0"},
{"0px", "0px"},
{"-5px", "-5px"},
{"1.25in", "1.25in"},
{"+.33em", "+.33em"},
{"100%", "100%"},
{"12.5%", "12.5%"},
{".foo", ".foo"},
{"#bar", "#bar"},
{"corner-radius", "corner-radius"},
{"-moz-corner-radius", "-moz-corner-radius"},
{"#000", "#000"},
{"#48f", "#48f"},
{"#123456", "#123456"},
{"U+00-FF, U+980-9FF", "U+00-FF, U+980-9FF"},
{"color: red", "color: red"},
{"<!--", "ZgotmplZ"},
{"-->", "ZgotmplZ"},
{"<![CDATA[", "ZgotmplZ"},
{"]]>", "ZgotmplZ"},
{"</style", "ZgotmplZ"},
{`"`, "ZgotmplZ"},
{`'`, "ZgotmplZ"},
{"`", "ZgotmplZ"},
{"\x00", "ZgotmplZ"},
{"/* foo */", "ZgotmplZ"},
{"//", "ZgotmplZ"},
{"[href=~", "ZgotmplZ"},
{"expression(alert(1337))", "ZgotmplZ"},
{"-expression(alert(1337))", "ZgotmplZ"},
{"expression", "ZgotmplZ"},
{"Expression", "ZgotmplZ"},
{"EXPRESSION", "ZgotmplZ"},
{"-moz-binding", "ZgotmplZ"},
{"-expr\x00ession(alert(1337))", "ZgotmplZ"},
{`-expr\0ession(alert(1337))`, "ZgotmplZ"},
{`-express\69on(alert(1337))`, "ZgotmplZ"},
{`-express\69 on(alert(1337))`, "ZgotmplZ"},
{`-exp\72 ession(alert(1337))`, "ZgotmplZ"},
{`-exp\52 ession(alert(1337))`, "ZgotmplZ"},
{`-exp\000052 ession(alert(1337))`, "ZgotmplZ"},
{`-expre\0000073sion`, "-expre\x073sion"},
{`@import url evil.css`, "ZgotmplZ"},
{"<", "ZgotmplZ"},
{">", "ZgotmplZ"},
}
for _, test := range tests {
got := cssValueFilter(test.css)
if got != test.want {
t.Errorf("%q: want %q but got %q", test.css, test.want, got)
}
}
}
func BenchmarkCSSEscaper(b *testing.B) {
for i := 0; i < b.N; i++ {
cssEscaper("The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>")
}
}
func BenchmarkCSSEscaperNoSpecials(b *testing.B) {
for i := 0; i < b.N; i++ {
cssEscaper("The quick, brown fox jumps over the lazy dog.")
}
}
func BenchmarkDecodeCSS(b *testing.B) {
s := []byte(`The \3c i\3equick\3c/i\3e,\d\A\3cspan style=\27 color:brown\27\3e brown\3c/span\3e fox jumps\2028over the \3c canine class=\22lazy\22 \3edog\3c/canine\3e`)
b.ResetTimer()
for i := 0; i < b.N; i++ {
decodeCSS(s)
}
}
func BenchmarkDecodeCSSNoSpecials(b *testing.B) {
s := []byte("The quick, brown fox jumps over the lazy dog.")
b.ResetTimer()
for i := 0; i < b.N; i++ {
decodeCSS(s)
}
}
func BenchmarkCSSValueFilter(b *testing.B) {
for i := 0; i < b.N; i++ {
cssValueFilter(` e\78preS\0Sio/**/n(alert(1337))`)
}
}
func BenchmarkCSSValueFilterOk(b *testing.B) {
for i := 0; i < b.N; i++ {
cssValueFilter(`Times New Roman`)
}
}
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