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// Copyright 2015 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package internal
import (
"fmt"
"strings"
"testing"
"golang.org/x/text/language"
)
func TestUnique(t *testing.T) {
testCases := []struct {
in, want string
}{
{"", "[]"},
{"en", "[en]"},
{"en en", "[en]"},
{"en en en", "[en]"},
{"en-u-cu-eur en", "[en en-u-cu-eur]"},
{"nl en", "[en nl]"},
{"pt-Pt pt", "[pt pt-PT]"},
}
for _, tc := range testCases {
tags := []language.Tag{}
for _, s := range strings.Split(tc.in, " ") {
if s != "" {
tags = append(tags, language.MustParse(s))
}
}
if got := fmt.Sprint(UniqueTags(tags)); got != tc.want {
t.Errorf("Unique(%s) = %s; want %s", tc.in, got, tc.want)
}
}
}
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