code review 4526095: unicode: add the first few property tests for printing.

src/pkg/unicode/letter_test.go

 // Copyright 2009 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 unicode_test
 
 import (
         "testing"
         . "unicode"
 )
@@ skipping 305 matching lines @@
         for _, c := range letterTest {
                 if IsSpace(c) {
                         t.Errorf("IsSpace(U+%04X) = true; want false", c)
                 }
         }
 }
 
 // Check that the optimizations for IsLetter etc. agree with the tables.
 // We only need to check the Latin-1 range.
 func TestLetterOptimizations(t *testing.T) {
-        for i := 0; i < 0x100; i++ {
+        for i := 0; i < Latin1Max; i++ {
                 if Is(Letter, i) != IsLetter(i) {
                         t.Errorf("IsLetter(U+%04X) disagrees with Is(Letter)", i)
                 }
                 if Is(Upper, i) != IsUpper(i) {
                         t.Errorf("IsUpper(U+%04X) disagrees with Is(Upper)", i)
                 }
                 if Is(Lower, i) != IsLower(i) {
                         t.Errorf("IsLower(U+%04X) disagrees with Is(Lower)", i)
                 }
                 if Is(Title, i) != IsTitle(i) {
@@ skipping 32 matching lines @@
                         t.Errorf("lower(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToLower(l), l)
                 }
                 if TurkishCase.ToTitle(u) != u {
                         t.Errorf("title(U+%04X) is U+%04X not U+%04X", u, TurkishCase.ToTitle(u), u)
                 }
                 if TurkishCase.ToTitle(l) != u {
                         t.Errorf("title(U+%04X) is U+%04X not U+%04X", l, TurkishCase.ToTitle(l), u)
                 }
         }
 }