Checking in vendor folder for ease of using go get.

vendor/golang.org/x/text/internal/internal_test.go

@@ -0,0 +1,38 @@
+// 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)
+		}
+	}
+}