colltab_test.go

Documentation: golang.org/x/text/internal/colltab

     1  package colltab
     2  
     3  import (
     4  	"testing"
     5  
     6  	"golang.org/x/text/language"
     7  )
     8  
     9  func TestMatchLang(t *testing.T) {
    10  	tags := []language.Tag{
    11  		0:  language.Und,
    12  		1:  language.MustParse("bs"),
    13  		2:  language.German,
    14  		3:  language.English,
    15  		4:  language.AmericanEnglish,
    16  		5:  language.MustParse("en-US-u-va-posix"),
    17  		6:  language.Portuguese,
    18  		7:  language.Serbian,
    19  		8:  language.MustParse("sr-Latn"),
    20  		9:  language.Chinese,
    21  		10: language.MustParse("zh-u-co-stroke"),
    22  		11: language.MustParse("zh-Hant-u-co-pinyin"),
    23  		12: language.TraditionalChinese,
    24  	}
    25  	for i, tc := range []struct {
    26  		x int
    27  		t language.Tag
    28  	}{
    29  		{0, language.Und},
    30  		{0, language.Persian}, // Default to first element when no match.
    31  		{3, language.English},
    32  		{4, language.AmericanEnglish},
    33  		{5, language.MustParse("en-US-u-va-posix")},   // Ext. variant match.
    34  		{4, language.MustParse("en-US-u-va-noposix")}, // Ext. variant mismatch.
    35  		{3, language.MustParse("en-UK-u-va-noposix")}, // Ext. variant mismatch.
    36  		{7, language.Serbian},
    37  		{0, language.Croatian},             // Don't match to close language!
    38  		{0, language.MustParse("gsw")},     // Don't match to close language!
    39  		{1, language.MustParse("bs-Cyrl")}, // Odd, but correct.
    40  		{1, language.MustParse("bs-Latn")}, // Estimated script drops.
    41  		{8, language.MustParse("sr-Latn")},
    42  		{9, language.Chinese},
    43  		{9, language.SimplifiedChinese},
    44  		{12, language.TraditionalChinese},
    45  		{11, language.MustParse("zh-Hant-u-co-pinyin")},
    46  		// TODO: should this be 12? Either inherited value (10) or default is
    47  		// fine in this case, though. Other locales are not affected.
    48  		{10, language.MustParse("zh-Hant-u-co-stroke")},
    49  		// There is no "phonebk" sorting order for zh-Hant, so use default.
    50  		{12, language.MustParse("zh-Hant-u-co-phonebk")},
    51  		{10, language.MustParse("zh-u-co-stroke")},
    52  		{12, language.MustParse("und-TW")},     // Infer script and language.
    53  		{12, language.MustParse("und-HK")},     // Infer script and language.
    54  		{6, language.MustParse("und-BR")},      // Infer script and language.
    55  		{6, language.MustParse("und-PT")},      // Infer script and language.
    56  		{2, language.MustParse("und-Latn-DE")}, // Infer language.
    57  		{0, language.MustParse("und-Jpan-BR")}, // Infers "ja", so no match.
    58  		{0, language.MustParse("zu")},          // No match past index.
    59  	} {
    60  		t.Run(tc.t.String(), func(t *testing.T) {
    61  			if x := MatchLang(tc.t, tags); x != tc.x {
    62  				t.Errorf("%d: MatchLang(%q, tags) = %d; want %d", i, tc.t, x, tc.x)
    63  			}
    64  		})
    65  	}
    66  }
    67
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