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      1 // Protocol Buffers - Google's data interchange format
      2 // Copyright 2008 Google Inc.  All rights reserved.
      3 // http://code.google.com/p/protobuf/
      4 //
      5 // Redistribution and use in source and binary forms, with or without
      6 // modification, are permitted provided that the following conditions are
      7 // met:
      8 //
      9 //     * Redistributions of source code must retain the above copyright
     10 // notice, this list of conditions and the following disclaimer.
     11 //     * Redistributions in binary form must reproduce the above
     12 // copyright notice, this list of conditions and the following disclaimer
     13 // in the documentation and/or other materials provided with the
     14 // distribution.
     15 //     * Neither the name of Google Inc. nor the names of its
     16 // contributors may be used to endorse or promote products derived from
     17 // this software without specific prior written permission.
     18 //
     19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
     20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
     21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
     22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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     28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
     29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     30 
     31 // Author: kenton (at) google.com (Kenton Varda)
     32 
     33 #include <google/protobuf/stubs/strutil.h>
     34 
     35 #include <google/protobuf/testing/googletest.h>
     36 #include <gtest/gtest.h>
     37 #include <locale.h>
     38 
     39 namespace google {
     40 namespace protobuf {
     41 namespace {
     42 
     43 // TODO(kenton):  Copy strutil tests from google3?
     44 
     45 TEST(StringUtilityTest, ImmuneToLocales) {
     46   // Remember the old locale.
     47   char* old_locale_cstr = setlocale(LC_NUMERIC, NULL);
     48   ASSERT_TRUE(old_locale_cstr != NULL);
     49   string old_locale = old_locale_cstr;
     50 
     51   // Set the locale to "C".
     52   ASSERT_TRUE(setlocale(LC_NUMERIC, "C") != NULL);
     53 
     54   EXPECT_EQ(1.5, NoLocaleStrtod("1.5", NULL));
     55   EXPECT_EQ("1.5", SimpleDtoa(1.5));
     56   EXPECT_EQ("1.5", SimpleFtoa(1.5));
     57 
     58   // Verify that the endptr is set correctly even if not all text was parsed.
     59   const char* text = "1.5f";
     60   char* endptr;
     61   EXPECT_EQ(1.5, NoLocaleStrtod(text, &endptr));
     62   EXPECT_EQ(3, endptr - text);
     63 
     64   if (setlocale(LC_NUMERIC, "es_ES") == NULL &&
     65       setlocale(LC_NUMERIC, "es_ES.utf8") == NULL) {
     66     // Some systems may not have the desired locale available.
     67     GOOGLE_LOG(WARNING)
     68       << "Couldn't set locale to es_ES.  Skipping this test.";
     69   } else {
     70     EXPECT_EQ(1.5, NoLocaleStrtod("1.5", NULL));
     71     EXPECT_EQ("1.5", SimpleDtoa(1.5));
     72     EXPECT_EQ("1.5", SimpleFtoa(1.5));
     73     EXPECT_EQ(1.5, NoLocaleStrtod(text, &endptr));
     74     EXPECT_EQ(3, endptr - text);
     75   }
     76 
     77   // Return to original locale.
     78   setlocale(LC_NUMERIC, old_locale.c_str());
     79 }
     80 
     81 }  // anonymous namespace
     82 }  // namespace protobuf
     83 }  // namespace google
     84