Extend with a language code in http accept languages

net/http/http_util_icu_unittest.cc

Index: net/http/http_util_icu_unittest.cc
diff --git a/net/http/http_util_icu_unittest.cc b/net/http/http_util_icu_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..a08737bf79539bc267b20a071dd627193723d076
--- /dev/null
+++ b/net/http/http_util_icu_unittest.cc
@@ -0,0 +1,44 @@
+// Copyright (c) 2012 The Chromium Authors. All rights reserved.

[Seigo Nonaka, 2016/12/12 01:48:54]

2016

[Yirui Huang, 2016/12/12 06:50:41]

Done.

+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <algorithm>

[Seigo Nonaka, 2016/12/12 01:48:54]

remove?

[Yirui Huang, 2016/12/12 06:50:41]

Done.

+#include <limits>

[Seigo Nonaka, 2016/12/12 01:48:54]

remove?

[Yirui Huang, 2016/12/12 06:50:41]

Done.

+
+#include "base/strings/string_util.h"

[Seigo Nonaka, 2016/12/12 01:48:54]

remove?

[Yirui Huang, 2016/12/12 06:50:41]

Done.

+#include "net/http/http_util_icu.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace net {
+
+namespace {
+class HttpUtilIcuTest : public testing::Test {};

[Seigo Nonaka, 2016/12/12 01:48:54]

Not necessary. Please remove this class declaration.

[Yirui Huang, 2016/12/12 06:50:41]

Done.

+}
+
+TEST(HttpUtilIcuTest, GenerateAcceptLanguageHeader) {
+  EXPECT_EQ(std::string("en-US,en;q=0.8,fr;q=0.6,de;q=0.4"),
+            HttpUtilIcu::GenerateAcceptLanguageHeader("en-US,fr,de"));
+
+  // Test whitespace between language tags.
+  EXPECT_EQ(std::string("en-US,en;q=0.8,fr;q=0.6,de;q=0.4"),
+            HttpUtilIcu::GenerateAcceptLanguageHeader("en-US,     fr,   de"));
+
+  // Test a language code is inserted after languageTag only if it is not
+  // already in the request language list
+  EXPECT_EQ(std::string("en-US,en;q=0.8,fr-FR;q=0.6,fr;q=0.4,zh-CN;q=0.2,"
+                        "zh;q=0.2"),
+            HttpUtilIcu::GenerateAcceptLanguageHeader("en-US,fr-FR,zh-CN"));
+
+  // Test a language code will not be inserted after languageTag if it is
+  // already in the request language list
+  EXPECT_EQ(std::string("en-US,en;q=0.8,fr-FR;q=0.6,fr;q=0.4,zh-CN;q=0.2,"
+                        "zh;q=0.2"),
+            HttpUtilIcu::GenerateAcceptLanguageHeader("en-US,fr-FR,fr,zh-CN"));
+
+  // Make sure a language code is only inserted after the last languageTag that
+  // contains that language.
+  EXPECT_EQ(std::string("en-US,en-GB;q=0.8,en;q=0.6,fr;q=0.4,zh-CN;q=0.2,"
+                        "zh;q=0.2"),
+            HttpUtilIcu::GenerateAcceptLanguageHeader("en-US,en-GB,fr,zh-CN"));
+}
+}