htmlindex_test.go

Documentation: golang.org/x/text/encoding/htmlindex

     1  // Copyright 2015 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 htmlindex
     6  
     7  import (
     8  	"testing"
     9  
    10  	"golang.org/x/text/encoding"
    11  	"golang.org/x/text/encoding/charmap"
    12  	"golang.org/x/text/encoding/internal/identifier"
    13  	"golang.org/x/text/encoding/unicode"
    14  	"golang.org/x/text/language"
    15  )
    16  
    17  func TestGet(t *testing.T) {
    18  	for i, tc := range []struct {
    19  		name      string
    20  		canonical string
    21  		err       error
    22  	}{
    23  		{"utf-8", "utf-8", nil},
    24  		{"  utf-8  ", "utf-8", nil},
    25  		{"  l5  ", "windows-1254", nil},
    26  		{"latin5 ", "windows-1254", nil},
    27  		{"latin 5", "", errInvalidName},
    28  		{"latin-5", "", errInvalidName},
    29  	} {
    30  		enc, err := Get(tc.name)
    31  		if err != tc.err {
    32  			t.Errorf("%d: error was %v; want %v", i, err, tc.err)
    33  		}
    34  		if err != nil {
    35  			continue
    36  		}
    37  		if got, err := Name(enc); got != tc.canonical {
    38  			t.Errorf("%d: Name(Get(%q)) = %q; want %q (%v)", i, tc.name, got, tc.canonical, err)
    39  		}
    40  	}
    41  }
    42  
    43  func TestTables(t *testing.T) {
    44  	for name, index := range nameMap {
    45  		got, err := Get(name)
    46  		if err != nil {
    47  			t.Errorf("%s:err: expected non-nil error", name)
    48  		}
    49  		if want := encodings[index]; got != want {
    50  			t.Errorf("%s:encoding: got %v; want %v", name, got, want)
    51  		}
    52  		mib, _ := got.(identifier.Interface).ID()
    53  		if mibMap[mib] != index {
    54  			t.Errorf("%s:mibMab: got %d; want %d", name, mibMap[mib], index)
    55  		}
    56  	}
    57  }
    58  
    59  func TestName(t *testing.T) {
    60  	for i, tc := range []struct {
    61  		desc string
    62  		enc  encoding.Encoding
    63  		name string
    64  		err  error
    65  	}{{
    66  		"defined encoding",
    67  		charmap.ISO8859_2,
    68  		"iso-8859-2",
    69  		nil,
    70  	}, {
    71  		"defined Unicode encoding",
    72  		unicode.UTF16(unicode.BigEndian, unicode.IgnoreBOM),
    73  		"utf-16be",
    74  		nil,
    75  	}, {
    76  		"undefined Unicode encoding in HTML standard",
    77  		unicode.UTF16(unicode.BigEndian, unicode.UseBOM),
    78  		"",
    79  		errUnsupported,
    80  	}, {
    81  		"undefined other encoding in HTML standard",
    82  		charmap.CodePage437,
    83  		"",
    84  		errUnsupported,
    85  	}, {
    86  		"unknown encoding",
    87  		encoding.Nop,
    88  		"",
    89  		errUnknown,
    90  	}} {
    91  		name, err := Name(tc.enc)
    92  		if name != tc.name || err != tc.err {
    93  			t.Errorf("%d:%s: got %q, %v; want %q, %v", i, tc.desc, name, err, tc.name, tc.err)
    94  		}
    95  	}
    96  }
    97  
    98  func TestLanguageDefault(t *testing.T) {
    99  	for _, tc := range []struct{ tag, want string }{
   100  		{"und", "windows-1252"}, // The default value.
   101  		{"ar", "windows-1256"},
   102  		{"ba", "windows-1251"},
   103  		{"be", "windows-1251"},
   104  		{"bg", "windows-1251"},
   105  		{"cs", "windows-1250"},
   106  		{"el", "iso-8859-7"},
   107  		{"et", "windows-1257"},
   108  		{"fa", "windows-1256"},
   109  		{"he", "windows-1255"},
   110  		{"hr", "windows-1250"},
   111  		{"hu", "iso-8859-2"},
   112  		{"ja", "shift_jis"},
   113  		{"kk", "windows-1251"},
   114  		{"ko", "euc-kr"},
   115  		{"ku", "windows-1254"},
   116  		{"ky", "windows-1251"},
   117  		{"lt", "windows-1257"},
   118  		{"lv", "windows-1257"},
   119  		{"mk", "windows-1251"},
   120  		{"pl", "iso-8859-2"},
   121  		{"ru", "windows-1251"},
   122  		{"sah", "windows-1251"},
   123  		{"sk", "windows-1250"},
   124  		{"sl", "iso-8859-2"},
   125  		{"sr", "windows-1251"},
   126  		{"tg", "windows-1251"},
   127  		{"th", "windows-874"},
   128  		{"tr", "windows-1254"},
   129  		{"tt", "windows-1251"},
   130  		{"uk", "windows-1251"},
   131  		{"vi", "windows-1258"},
   132  		{"zh-hans", "gb18030"},
   133  		{"zh-hant", "big5"},
   134  		// Variants and close approximates of the above.
   135  		{"ar_EG", "windows-1256"},
   136  		{"bs", "windows-1250"}, // Bosnian Latin maps to Croatian.
   137  		// Use default fallback in case of miss.
   138  		{"nl", "windows-1252"},
   139  	} {
   140  		if got := LanguageDefault(language.MustParse(tc.tag)); got != tc.want {
   141  			t.Errorf("LanguageDefault(%s) = %s; want %s", tc.tag, got, tc.want)
   142  		}
   143  	}
   144  }
   145
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