chrome/browser/net/client_hints_unittest.cc

   1 // Copyright 2013 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #include "chrome/browser/net/client_hints.h"
   6
   7 #include <locale.h>
   8
   9 #include "base/logging.h"
  10 #if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_IOS)
  11 #include "base/test/scoped_locale.h"
  12 #endif
  13 #include "testing/gtest/include/gtest/gtest.h"
  14
  15 class ClientHintsTest : public testing::Test {
  16  public:
  17   void UpdateScreenInfo(float pixel_ratio) {
  18     client_hints_.UpdateScreenInfo(pixel_ratio);
  19   };
  20
  21  protected:
  22   ClientHints client_hints_;
  23 };
  24
  25 TEST_F(ClientHintsTest, HintsWellFormatted) {
  26   UpdateScreenInfo(1.567f);
  27   std::string hint = client_hints_.GetDevicePixelRatioHeader();
  28   EXPECT_EQ("1.57", hint);
  29 }
  30
  31 // Android and iOS do not support setLocale.
  32 #if defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_IOS)
  33 // TODO(bengr): Use ScopedLocal in Windows once it is supported.
  34 TEST_F(ClientHintsTest, HintsWellFormattedWithNonEnLocale) {
  35   base::ScopedLocale locale("fr_FR.UTF-8");
  36   UpdateScreenInfo(1.567f);
  37   std::string hint = client_hints_.GetDevicePixelRatioHeader();
  38   EXPECT_EQ("1.57", hint);
  39 }
  40 #endif  // defined(OS_POSIX) && !defined(OS_ANDROID) && !defined(OS_IOS)
  41
  42 TEST_F(ClientHintsTest, HintsHaveNonbogusValues) {
  43   UpdateScreenInfo(-1.567f);
  44   std::string hint = client_hints_.GetDevicePixelRatioHeader();
  45   EXPECT_EQ("", hint);
  46
  47   UpdateScreenInfo(1.567f);
  48   hint = client_hints_.GetDevicePixelRatioHeader();
  49   EXPECT_EQ("1.57", hint);
  50
  51   UpdateScreenInfo(0.0f);
  52   hint = client_hints_.GetDevicePixelRatioHeader();
  53   // Hints should be last known good values.
  54   EXPECT_EQ("1.57", hint);
  55 }
  56