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
15class 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
25TEST_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.
34TEST_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
42TEST_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
57