escape_test.go

Documentation: golang.org/x/net/html

     1  // Copyright 2013 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 "testing"
     8  
     9  type unescapeTest struct {
    10  	// A short description of the test case.
    11  	desc string
    12  	// The HTML text.
    13  	html string
    14  	// The unescaped text.
    15  	unescaped string
    16  }
    17  
    18  var unescapeTests = []unescapeTest{
    19  	// Handle no entities.
    20  	{
    21  		"copy",
    22  		"A\ttext\nstring",
    23  		"A\ttext\nstring",
    24  	},
    25  	// Handle simple named entities.
    26  	{
    27  		"simple",
    28  		"&amp; &gt; &lt;",
    29  		"& > <",
    30  	},
    31  	// Handle hitting the end of the string.
    32  	{
    33  		"stringEnd",
    34  		"&amp &amp",
    35  		"& &",
    36  	},
    37  	// Handle entities with two codepoints.
    38  	{
    39  		"multiCodepoint",
    40  		"text &gesl; blah",
    41  		"text \u22db\ufe00 blah",
    42  	},
    43  	// Handle decimal numeric entities.
    44  	{
    45  		"decimalEntity",
    46  		"Delta = &#916; ",
    47  		"Delta = Δ ",
    48  	},
    49  	// Handle hexadecimal numeric entities.
    50  	{
    51  		"hexadecimalEntity",
    52  		"Lambda = &#x3bb; = &#X3Bb ",
    53  		"Lambda = λ = λ ",
    54  	},
    55  	// Handle numeric early termination.
    56  	{
    57  		"numericEnds",
    58  		"&# &#x &#128;43 &copy = &#169f = &#xa9",
    59  		"&# &#x €43 © = ©f = ©",
    60  	},
    61  	// Handle numeric ISO-8859-1 entity replacements.
    62  	{
    63  		"numericReplacements",
    64  		"Footnote&#x87;",
    65  		"Footnote‡",
    66  	},
    67  }
    68  
    69  func TestUnescape(t *testing.T) {
    70  	for _, tt := range unescapeTests {
    71  		unescaped := UnescapeString(tt.html)
    72  		if unescaped != tt.unescaped {
    73  			t.Errorf("TestUnescape %s: want %q, got %q", tt.desc, tt.unescaped, unescaped)
    74  		}
    75  	}
    76  }
    77  
    78  func TestUnescapeEscape(t *testing.T) {
    79  	ss := []string{
    80  		``,
    81  		`abc def`,
    82  		`a & b`,
    83  		`a&amp;b`,
    84  		`a &amp b`,
    85  		`&quot;`,
    86  		`"`,
    87  		`"<&>"`,
    88  		`&quot;&lt;&amp;&gt;&quot;`,
    89  		`3&5==1 && 0<1, "0&lt;1", a+acute=&aacute;`,
    90  		`The special characters are: <, >, &, ' and "`,
    91  	}
    92  	for _, s := range ss {
    93  		if got := UnescapeString(EscapeString(s)); got != s {
    94  			t.Errorf("got %q want %q", got, s)
    95  		}
    96  	}
    97  }
    98
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