i18n of Zoom % to use locally correct numeric glyphs

base/i18n/number_formatting_unittest.cc

 // Copyright (c) 2011 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <stddef.h>
 #include <stdint.h>
 
 #include <limits>
 
 #include "base/i18n/number_formatting.h"
@@ skipping 76 matching lines @@
     testing::ResetFormatters();
     EXPECT_EQ(cases[i].expected_english,
               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
     i18n::SetICUDefaultLocale("de");
     testing::ResetFormatters();
     EXPECT_EQ(cases[i].expected_german,
               UTF16ToUTF8(FormatDouble(cases[i].number, cases[i].frac_digits)));
   }
 }
 
+TEST(NumberFormattingTest, FormatPercent) {
+  static const struct {
+    int64_t number;
+    const char* expected_english;
+    const wchar_t* expected_german;   // Note: Space before % isn't \x20.

[jungshik at Google, 2016/05/25 07:48:29]

I didn't know that U+00A0 is used, but it kinda makes sense. 

+    const wchar_t* expected_persian;  // Note: Non-Arabic numbers and %.
+  } cases[] = {
+    {0, "0%", L"0\xa0%", L"\x6f0\x200f\x66a"},
+    {42, "42%", L"42\xa0%", L"\x6f4\x6f2\x200f\x66a"},
+    {1024, "1,024%", L"1.024\xa0%", L"\x6f1\x66c\x6f0\x6f2\x6f4\x200f\x66a"},
+  };
+
+  test::ScopedRestoreICUDefaultLocale restore_locale;
+  for (size_t i = 0; i < arraysize(cases); ++i) {
+    i18n::SetICUDefaultLocale("en");
+    EXPECT_EQ(ASCIIToUTF16(cases[i].expected_english),
+              FormatPercent(cases[i].number));
+    i18n::SetICUDefaultLocale("de");
+    EXPECT_EQ(WideToUTF16(cases[i].expected_german),
+              FormatPercent(cases[i].number));
+    i18n::SetICUDefaultLocale("fa");
+    EXPECT_EQ(WideToUTF16(cases[i].expected_persian),
+              FormatPercent(cases[i].number));
+  }
+}
+
 }  // namespace
 }  // namespace base