vendor/golang.org/x/text/message/message_test.go

   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 message
   6
   7 import (
   8         "bytes"
   9         "fmt"
  10         "io"
  11         "testing"
  12
  13         "golang.org/x/text/internal"
  14         "golang.org/x/text/internal/format"
  15         "golang.org/x/text/language"
  16         "golang.org/x/text/message/catalog"
  17 )
  18
  19 type formatFunc func(s fmt.State, v rune)
  20
  21 func (f formatFunc) Format(s fmt.State, v rune) { f(s, v) }
  22
  23 func TestBinding(t *testing.T) {
  24         testCases := []struct {
  25                 tag   string
  26                 value interface{}
  27                 want  string
  28         }{
  29                 {"en", 1, "1"},
  30                 {"en", "2", "2"},
  31                 { // Language is passed.
  32                         "en",
  33                         formatFunc(func(fs fmt.State, v rune) {
  34                                 s := fs.(format.State)
  35                                 io.WriteString(s, s.Language().String())
  36                         }),
  37                         "en",
  38                 },
  39         }
  40         for i, tc := range testCases {
  41                 p := NewPrinter(language.MustParse(tc.tag))
  42                 if got := p.Sprint(tc.value); got != tc.want {
  43                         t.Errorf("%d:%s:Sprint(%v) = %q; want %q", i, tc.tag, tc.value, got, tc.want)
  44                 }
  45                 var buf bytes.Buffer
  46                 p.Fprint(&buf, tc.value)
  47                 if got := buf.String(); got != tc.want {
  48                         t.Errorf("%d:%s:Fprint(%v) = %q; want %q", i, tc.tag, tc.value, got, tc.want)
  49                 }
  50         }
  51 }
  52
  53 func TestLocalization(t *testing.T) {
  54         type test struct {
  55                 tag  string
  56                 key  Reference
  57                 args []interface{}
  58                 want string
  59         }
  60         args := func(x ...interface{}) []interface{} { return x }
  61         empty := []interface{}{}
  62         joe := []interface{}{"Joe"}
  63         joeAndMary := []interface{}{"Joe", "Mary"}
  64
  65         testCases := []struct {
  66                 desc string
  67                 cat  []entry
  68                 test []test
  69         }{{
  70                 desc: "empty",
  71                 test: []test{
  72                         {"en", "key", empty, "key"},
  73                         {"en", "", empty, ""},
  74                         {"nl", "", empty, ""},
  75                 },
  76         }, {
  77                 desc: "hierarchical languages",
  78                 cat: []entry{
  79                         {"en", "hello %s", "Hello %s!"},
  80                         {"en-GB", "hello %s", "Hellø %s!"},
  81                         {"en-US", "hello %s", "Howdy %s!"},
  82                         {"en", "greetings %s and %s", "Greetings %s and %s!"},
  83                 },
  84                 test: []test{
  85                         {"und", "hello %s", joe, "hello Joe"},
  86                         {"nl", "hello %s", joe, "hello Joe"},
  87                         {"en", "hello %s", joe, "Hello Joe!"},
  88                         {"en-US", "hello %s", joe, "Howdy Joe!"},
  89                         {"en-GB", "hello %s", joe, "Hellø Joe!"},
  90                         {"en-oxendict", "hello %s", joe, "Hello Joe!"},
  91                         {"en-US-oxendict-u-ms-metric", "hello %s", joe, "Howdy Joe!"},
  92
  93                         {"und", "greetings %s and %s", joeAndMary, "greetings Joe and Mary"},
  94                         {"nl", "greetings %s and %s", joeAndMary, "greetings Joe and Mary"},
  95                         {"en", "greetings %s and %s", joeAndMary, "Greetings Joe and Mary!"},
  96                         {"en-US", "greetings %s and %s", joeAndMary, "Greetings Joe and Mary!"},
  97                         {"en-GB", "greetings %s and %s", joeAndMary, "Greetings Joe and Mary!"},
  98                         {"en-oxendict", "greetings %s and %s", joeAndMary, "Greetings Joe and Mary!"},
  99                         {"en-US-oxendict-u-ms-metric", "greetings %s and %s", joeAndMary, "Greetings Joe and Mary!"},
 100                 },
 101         }, {
 102                 desc: "references",
 103                 cat: []entry{
 104                         {"en", "hello", "Hello!"},
 105                 },
 106                 test: []test{
 107                         {"en", "hello", empty, "Hello!"},
 108                         {"en", Key("hello", "fallback"), empty, "Hello!"},
 109                         {"en", Key("xxx", "fallback"), empty, "fallback"},
 110                         {"und", Key("hello", "fallback"), empty, "fallback"},
 111                 },
 112         }, {
 113                 desc: "zero substitution", // work around limitation of fmt
 114                 cat: []entry{
 115                         {"en", "hello %s", "Hello!"},
 116                         {"en", "hi %s and %s", "Hello %[2]s!"},
 117                 },
 118                 test: []test{
 119                         {"en", "hello %s", joe, "Hello!"},
 120                         {"en", "hello %s", joeAndMary, "Hello!"},
 121                         {"en", "hi %s and %s", joeAndMary, "Hello Mary!"},
 122                         // The following tests resolve to the fallback string.
 123                         {"und", "hello", joeAndMary, "hello"},
 124                         {"und", "hello %%%%", joeAndMary, "hello %%"},
 125                         {"und", "hello %#%%4.2%  ", joeAndMary, "hello %%  "},
 126                         {"und", "hello %s", joeAndMary, "hello Joe%!(EXTRA string=Mary)"},
 127                         {"und", "hello %+%%s", joeAndMary, "hello %Joe%!(EXTRA string=Mary)"},
 128                         {"und", "hello %-42%%s ", joeAndMary, "hello %Joe %!(EXTRA string=Mary)"},
 129                 },
 130         }, {
 131                 desc: "number formatting", // work around limitation of fmt
 132                 cat: []entry{
 133                         {"und", "files", "%d files left"},
 134                         {"und", "meters", "%.2f meters"},
 135                         {"de", "files", "%d Dateien übrig"},
 136                 },
 137                 test: []test{
 138                         {"en", "meters", args(3000.2), "3,000.20 meters"},
 139                         {"en-u-nu-gujr", "files", args(123456), "૧૨૩,૪૫૬ files left"},
 140                         {"de", "files", args(1234), "1.234 Dateien übrig"},
 141                         {"de-CH", "files", args(1234), "1’234 Dateien übrig"},
 142                         {"de-CH-u-nu-mong", "files", args(1234), "᠑’᠒᠓᠔ Dateien übrig"},
 143                 },
 144         }}
 145
 146         for _, tc := range testCases {
 147                 cat, _ := initCat(tc.cat)
 148
 149                 for i, pt := range tc.test {
 150                         t.Run(fmt.Sprintf("%s:%d", tc.desc, i), func(t *testing.T) {
 151                                 p := NewPrinter(language.MustParse(pt.tag), Catalog(cat))
 152
 153                                 if got := p.Sprintf(pt.key, pt.args...); got != pt.want {
 154                                         t.Errorf("Sprintf(%q, %v) = %s; want %s",
 155                                                 pt.key, pt.args, got, pt.want)
 156                                         return // Next error will likely be the same.
 157                                 }
 158
 159                                 w := &bytes.Buffer{}
 160                                 p.Fprintf(w, pt.key, pt.args...)
 161                                 if got := w.String(); got != pt.want {
 162                                         t.Errorf("Fprintf(%q, %v) = %s; want %s",
 163                                                 pt.key, pt.args, got, pt.want)
 164                                 }
 165                         })
 166                 }
 167         }
 168 }
 169
 170 type entry struct{ tag, key, msg string }
 171
 172 func initCat(entries []entry) (*catalog.Catalog, []language.Tag) {
 173         tags := []language.Tag{}
 174         cat := catalog.New()
 175         for _, e := range entries {
 176                 tag := language.MustParse(e.tag)
 177                 tags = append(tags, tag)
 178                 cat.SetString(tag, e.key, e.msg)
 179         }
 180         return cat, internal.UniqueTags(tags)
 181 }