Localize strings, speeds.

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 <limits>
+
+#include "base/i18n/number_formatting.h"
+#include "base/utf_string_conversions.h"
+#include "testing/gtest/include/gtest/gtest.h"
+#include "unicode/locid.h"
+
+namespace {
+
+void SetICUDefaultLocale(const std::string& locale_string) {
+  icu::Locale locale(locale_string.c_str());
+  UErrorCode error_code = U_ZERO_ERROR;
+  icu::Locale::setDefault(locale, error_code);
+  EXPECT_TRUE(U_SUCCESS(error_code));
+}
+
+}  // namespace
+
+TEST(NumberFormattingTest, FormatNumber) {
+  static const struct {
+    int64 number;
+    const char* expected_english;
+    const char* expected_german;
+  } cases[] = {
+    {0, "0", "0"},
+    {1024, "1,024", "1.024"},
+    {std::numeric_limits<int64>::max(),
+        "9,223,372,036,854,775,807", "9.223.372.036.854.775.807"},
+    {std::numeric_limits<int64>::min(),
+        "-9,223,372,036,854,775,808", "-9.223.372.036.854.775.808"},
+    {-42, "-42", "-42"},
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+    SetICUDefaultLocale("en");
+    base::testing::ResetFormatters();
+    EXPECT_EQ(cases[i].expected_english,
+              UTF16ToUTF8(base::FormatNumber(cases[i].number)));
+    SetICUDefaultLocale("de");
+    base::testing::ResetFormatters();
+    EXPECT_EQ(cases[i].expected_german,
+              UTF16ToUTF8(base::FormatNumber(cases[i].number)));
+  }
+}
+
+TEST(NumberFormattingTest, FormatDouble) {
+  static const struct {
+    double number;
+    int frac_digits;
+    const char* expected_english;
+    const char* expected_german;
+  } cases[] = {
+    {0.0, 0, "0", "0"},
+    {-0.0, 4, "-0.0000", "-0,0000"},
+    {1024.2, 0, "1,024", "1.024"},
+    {-1024.223, 2, "-1,024.22", "-1.024,22"},
+    {std::numeric_limits<double>::max(), 6,
+        "179,769,313,486,232,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,000,"
+        "000.000000",
+        "179.769.313.486.232.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000.000."
+        "000,000000"},
+    {std::numeric_limits<double>::min(), 2, "0.00", "0,00"},
+    {-42.7, 3, "-42.700", "-42,700"},
+  };
+
+  for (size_t i = 0; i < ARRAYSIZE_UNSAFE(cases); ++i) {
+  SetICUDefaultLocale("en");
+  base::testing::ResetFormatters();
+  EXPECT_EQ(cases[i].expected_english,
+            UTF16ToUTF8(base::FormatDouble(cases[i].number,
+                                           cases[i].frac_digits)));
+  SetICUDefaultLocale("de");
+  base::testing::ResetFormatters();
+  EXPECT_EQ(cases[i].expected_german,
+            UTF16ToUTF8(base::FormatDouble(cases[i].number,
+                                           cases[i].frac_digits)));
+  }
+}