html_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 template
     6  
     7  import (
     8  	"html"
     9  	"strings"
    10  	"testing"
    11  )
    12  
    13  func TestHTMLNospaceEscaper(t *testing.T) {
    14  	input := ("\x00\x01\x02\x03\x04\x05\x06\x07\x08\t\n\x0b\x0c\r\x0e\x0f" +
    15  		"\x10\x11\x12\x13\x14\x15\x16\x17\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
    16  		` !"#$%&'()*+,-./` +
    17  		`0123456789:;<=>?` +
    18  		`@ABCDEFGHIJKLMNO` +
    19  		`PQRSTUVWXYZ[\]^_` +
    20  		"`abcdefghijklmno" +
    21  		"pqrstuvwxyz{|}~\x7f" +
    22  		"\u00A0\u0100\u2028\u2029\ufeff\ufdec\U0001D11E" +
    23  		"erroneous\x960") // keep at the end
    24  
    25  	want := ("&#xfffd;\x01\x02\x03\x04\x05\x06\x07" +
    26  		"\x08&#9;&#10;&#11;&#12;&#13;\x0E\x0F" +
    27  		"\x10\x11\x12\x13\x14\x15\x16\x17" +
    28  		"\x18\x19\x1a\x1b\x1c\x1d\x1e\x1f" +
    29  		`&#32;!&#34;#$%&amp;&#39;()*&#43;,-./` +
    30  		`0123456789:;&lt;&#61;&gt;?` +
    31  		`@ABCDEFGHIJKLMNO` +
    32  		`PQRSTUVWXYZ[\]^_` +
    33  		`&#96;abcdefghijklmno` +
    34  		`pqrstuvwxyz{|}~` + "\u007f" +
    35  		"\u00A0\u0100\u2028\u2029\ufeff&#xfdec;\U0001D11E" +
    36  		"erroneous&#xfffd;0") // keep at the end
    37  
    38  	got := htmlNospaceEscaper(input)
    39  	if got != want {
    40  		t.Errorf("encode: want\n\t%q\nbut got\n\t%q", want, got)
    41  	}
    42  
    43  	r := strings.NewReplacer("\x00", "\ufffd", "\x96", "\ufffd")
    44  	got, want = html.UnescapeString(got), r.Replace(input)
    45  	if want != got {
    46  		t.Errorf("decode: want\n\t%q\nbut got\n\t%q", want, got)
    47  	}
    48  }
    49  
    50  func TestStripTags(t *testing.T) {
    51  	tests := []struct {
    52  		input, want string
    53  	}{
    54  		{"", ""},
    55  		{"Hello, World!", "Hello, World!"},
    56  		{"foo&amp;bar", "foo&amp;bar"},
    57  		{`Hello <a href="www.example.com/">World</a>!`, "Hello World!"},
    58  		{"Foo <textarea>Bar</textarea> Baz", "Foo Bar Baz"},
    59  		{"Foo <!-- Bar --> Baz", "Foo  Baz"},
    60  		{"<", "<"},
    61  		{"foo < bar", "foo < bar"},
    62  		{`Foo<script type="text/javascript">alert(1337)</script>Bar`, "FooBar"},
    63  		{`Foo<div title="1>2">Bar`, "FooBar"},
    64  		{`I <3 Ponies!`, `I <3 Ponies!`},
    65  		{`<script>foo()</script>`, ``},
    66  	}
    67  
    68  	for _, test := range tests {
    69  		if got := stripTags(test.input); got != test.want {
    70  			t.Errorf("%q: want %q, got %q", test.input, test.want, got)
    71  		}
    72  	}
    73  }
    74  
    75  func BenchmarkHTMLNospaceEscaper(b *testing.B) {
    76  	for i := 0; i < b.N; i++ {
    77  		htmlNospaceEscaper("The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>")
    78  	}
    79  }
    80  
    81  func BenchmarkHTMLNospaceEscaperNoSpecials(b *testing.B) {
    82  	for i := 0; i < b.N; i++ {
    83  		htmlNospaceEscaper("The_quick,_brown_fox_jumps_over_the_lazy_dog.")
    84  	}
    85  }
    86  
    87  func BenchmarkStripTags(b *testing.B) {
    88  	for i := 0; i < b.N; i++ {
    89  		stripTags("The <i>quick</i>,\r\n<span style='color:brown'>brown</span> fox jumps\u2028over the <canine class=\"lazy\">dog</canine>")
    90  	}
    91  }
    92  
    93  func BenchmarkStripTagsNoSpecials(b *testing.B) {
    94  	for i := 0; i < b.N; i++ {
    95  		stripTags("The quick, brown fox jumps over the lazy dog.")
    96  	}
    97  }
    98
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