libgo/go/exp/template/html/css_test.go

   1 // Copyright 2011 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 package html
   6
   7 import (
   8         "strconv"
   9         "strings"
  10         "testing"
  11 )
  12
  13 func TestEndsWithCSSKeyword(t *testing.T) {
  14         tests := []struct {
  15                 css, kw string
  16                 want    bool
  17         }{
  18                 {"", "url", false},
  19                 {"url", "url", true},
  20                 {"URL", "url", true},
  21                 {"Url", "url", true},
  22                 {"url", "important", false},
  23                 {"important", "important", true},
  24                 {"image-url", "url", false},
  25                 {"imageurl", "url", false},
  26                 {"image url", "url", true},
  27         }
  28         for _, test := range tests {
  29                 got := endsWithCSSKeyword([]byte(test.css), test.kw)
  30                 if got != test.want {
  31                         t.Errorf("want %t but got %t for css=%v, kw=%v", test.want, got, test.css, test.kw)
  32                 }
  33         }
  34 }
  35
  36 func TestIsCSSNmchar(t *testing.T) {
  37         tests := []struct {
  38                 rune rune
  39                 want bool
  40         }{
  41                 {0, false},
  42                 {'0', true},
  43                 {'9', true},
  44                 {'A', true},
  45                 {'Z', true},
  46                 {'a', true},
  47                 {'z', true},
  48                 {'_', true},
  49                 {'-', true},
  50                 {':', false},
  51                 {';', false},
  52                 {' ', false},
  53                 {0x7f, false},
  54                 {0x80, true},
  55                 {0x1234, true},
  56                 {0xd800, false},
  57                 {0xdc00, false},
  58                 {0xfffe, false},
  59                 {0x10000, true},
  60                 {0x110000, false},
  61         }
  62         for _, test := range tests {
  63                 got := isCSSNmchar(test.rune)
  64                 if got != test.want {
  65                         t.Errorf("%q: want %t but got %t", string(test.rune), test.want, got)
  66                 }
  67         }
  68 }
  69
  70 func TestDecodeCSS(t *testing.T) {
  71         tests := []struct {
  72                 css, want string
  73         }{
  74                 {``, ``},
  75                 {`foo`, `foo`},
  76                 {`foo\`, `foo`},
  77                 {`foo\\`, `foo\`},
  78                 {`\`, ``},
  79                 {`\A`, "\n"},
  80                 {`\a`, "\n"},
  81                 {`\0a`, "\n"},
  82                 {`\00000a`, "\n"},
  83                 {`\000000a`, "\u0000a"},
  84                 {`\1234 5`, "\u1234" + "5"},
  85                 {`\1234\20 5`, "\u1234" + " 5"},
  86                 {`\1234\A 5`, "\u1234" + "\n5"},
  87                 {"\\1234\t5", "\u1234" + "5"},
  88                 {"\\1234\n5", "\u1234" + "5"},
  89                 {"\\1234\r\n5", "\u1234" + "5"},
  90                 {`\12345`, "\U00012345"},
  91                 {`\\`, `\`},
  92                 {`\\ `, `\ `},
  93                 {`\"`, `"`},
  94                 {`\'`, `'`},
  95                 {`\.`, `.`},
  96                 {`\. .`, `. .`},
  97                 {
  98                         `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`,
  99                         "The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>",
 100                 },
 101         }
 102         for _, test := range tests {
 103                 got1 := string(decodeCSS([]byte(test.css)))
 104                 if got1 != test.want {
 105                         t.Errorf("%q: want\n\t%q\nbut got\n\t%q", test.css, test.want, got1)
 106                 }
 107                 recoded := cssEscaper(got1)
 108                 if got2 := string(decodeCSS([]byte(recoded))); got2 != test.want {
 109                         t.Errorf("%q: escape & decode not dual for %q", test.css, recoded)
 110                 }
 111         }
 112 }
 113
 114 func TestHexDecode(t *testing.T) {
 115         for i := 0; i < 0x200000; i += 101 /* coprime with 16 */ {
 116                 s := strconv.Itob(i, 16)
 117                 if got := int(hexDecode([]byte(s))); got != i {
 118                         t.Errorf("%s: want %d but got %d", s, i, got)
 119                 }
 120                 s = strings.ToUpper(s)
 121                 if got := int(hexDecode([]byte(s))); got != i {
 122                         t.Errorf("%s: want %d but got %d", s, i, got)
 123                 }
 124         }
 125 }
 126
 127 func TestSkipCSSSpace(t *testing.T) {
 128         tests := []struct {
 129                 css, want string
 130         }{
 131                 {"", ""},
 132                 {"foo", "foo"},
 133                 {"\n", ""},
 134                 {"\r\n", ""},
 135                 {"\r", ""},
 136                 {"\t", ""},
 137                 {" ", ""},
 138                 {"\f", ""},
 139                 {" foo", "foo"},
 140                 {"  foo", " foo"},
 141                 {`\20`, `\20`},
 142         }
 143         for _, test := range tests {
 144                 got := string(skipCSSSpace([]byte(test.css)))
 145                 if got != test.want {
 146                         t.Errorf("%q: want %q but got %q", test.css, test.want, got)
 147                 }
 148         }
 149 }
 150
 151 func TestCSSEscaper(t *testing.T) {
 152         input := ("\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f" +
 153                 "\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
 154                 ` !"#$%&'()*+,-./` +
 155                 `0123456789:;<=>?` +
 156                 `@ABCDEFGHIJKLMNO` +
 157                 `PQRSTUVWXYZ[\]^_` +
 158                 "`abcdefghijklmno" +
 159                 "pqrstuvwxyz{|}~\x7f" +
 160                 "\u00A0\u0100\u2028\u2029\ufeff\U0001D11E")
 161
 162         want := ("\\0\x01\x02\x03\x04\x05\x06\x07" +
 163                 "\x08\\9 \\a\x0b\\c \\d\x0E\x0F" +
 164                 "\x10\x11\x12\x13\x14\x15\x16\x17" +
 165                 "\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
 166                 ` !\22#$%\26\27\28\29*\2b,-.\2f ` +
 167                 `0123456789\3a\3b\3c=\3e?` +
 168                 `@ABCDEFGHIJKLMNO` +
 169                 `PQRSTUVWXYZ[\\]^_` +
 170                 "`abcdefghijklmno" +
 171                 `pqrstuvwxyz\7b|\7d~` + "\u007f" +
 172                 "\u00A0\u0100\u2028\u2029\ufeff\U0001D11E")
 173
 174         got := cssEscaper(input)
 175         if got != want {
 176                 t.Errorf("encode: want\n\t%q\nbut got\n\t%q", want, got)
 177         }
 178
 179         got = string(decodeCSS([]byte(got)))
 180         if input != got {
 181                 t.Errorf("decode: want\n\t%q\nbut got\n\t%q", input, got)
 182         }
 183 }
 184
 185 func TestCSSValueFilter(t *testing.T) {
 186         tests := []struct {
 187                 css, want string
 188         }{
 189                 {"", ""},
 190                 {"foo", "foo"},
 191                 {"0", "0"},
 192                 {"0px", "0px"},
 193                 {"-5px", "-5px"},
 194                 {"1.25in", "1.25in"},
 195                 {"+.33em", "+.33em"},
 196                 {"100%", "100%"},
 197                 {"12.5%", "12.5%"},
 198                 {".foo", ".foo"},
 199                 {"#bar", "#bar"},
 200                 {"corner-radius", "corner-radius"},
 201                 {"-moz-corner-radius", "-moz-corner-radius"},
 202                 {"#000", "#000"},
 203                 {"#48f", "#48f"},
 204                 {"#123456", "#123456"},
 205                 {"U+00-FF, U+980-9FF", "U+00-FF, U+980-9FF"},
 206                 {"color: red", "color: red"},
 207                 {"<!--", "ZgotmplZ"},
 208                 {"-->", "ZgotmplZ"},
 209                 {"<![CDATA[", "ZgotmplZ"},
 210                 {"]]>", "ZgotmplZ"},
 211                 {"</style", "ZgotmplZ"},
 212                 {`"`, "ZgotmplZ"},
 213                 {`'`, "ZgotmplZ"},
 214                 {"`", "ZgotmplZ"},
 215                 {"\x00", "ZgotmplZ"},
 216                 {"/* foo */", "ZgotmplZ"},
 217                 {"//", "ZgotmplZ"},
 218                 {"[href=~", "ZgotmplZ"},
 219                 {"expression(alert(1337))", "ZgotmplZ"},
 220                 {"-expression(alert(1337))", "ZgotmplZ"},
 221                 {"expression", "ZgotmplZ"},
 222                 {"Expression", "ZgotmplZ"},
 223                 {"EXPRESSION", "ZgotmplZ"},
 224                 {"-moz-binding", "ZgotmplZ"},
 225                 {"-expr\x00ession(alert(1337))", "ZgotmplZ"},
 226                 {`-expr\0ession(alert(1337))`, "ZgotmplZ"},
 227                 {`-express\69on(alert(1337))`, "ZgotmplZ"},
 228                 {`-express\69 on(alert(1337))`, "ZgotmplZ"},
 229                 {`-exp\72 ession(alert(1337))`, "ZgotmplZ"},
 230                 {`-exp\52 ession(alert(1337))`, "ZgotmplZ"},
 231                 {`-exp\000052 ession(alert(1337))`, "ZgotmplZ"},
 232                 {`-expre\0000073sion`, "-expre\x073sion"},
 233                 {`@import url evil.css`, "ZgotmplZ"},
 234         }
 235         for _, test := range tests {
 236                 got := cssValueFilter(test.css)
 237                 if got != test.want {
 238                         t.Errorf("%q: want %q but got %q", test.css, test.want, got)
 239                 }
 240         }
 241 }
 242
 243 func BenchmarkCSSEscaper(b *testing.B) {
 244         for i := 0; i < b.N; i++ {
 245                 cssEscaper("The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>")
 246         }
 247 }
 248
 249 func BenchmarkCSSEscaperNoSpecials(b *testing.B) {
 250         for i := 0; i < b.N; i++ {
 251                 cssEscaper("The quick, brown fox jumps over the lazy dog.")
 252         }
 253 }
 254
 255 func BenchmarkDecodeCSS(b *testing.B) {
 256         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`)
 257         b.ResetTimer()
 258         for i := 0; i < b.N; i++ {
 259                 decodeCSS(s)
 260         }
 261 }
 262
 263 func BenchmarkDecodeCSSNoSpecials(b *testing.B) {
 264         s := []byte("The quick, brown fox jumps over the lazy dog.")
 265         b.ResetTimer()
 266         for i := 0; i < b.N; i++ {
 267                 decodeCSS(s)
 268         }
 269 }
 270
 271 func BenchmarkCSSValueFilter(b *testing.B) {
 272         for i := 0; i < b.N; i++ {
 273                 cssValueFilter(`  e\78preS\0Sio/**/n(alert(1337))`)
 274         }
 275 }
 276
 277 func BenchmarkCSSValueFilterOk(b *testing.B) {
 278         for i := 0; i < b.N; i++ {
 279                 cssValueFilter(`Times New Roman`)
 280         }
 281 }