Add a new QUIC platform API for text utilities.

net/quic/platform/api/quic_text_utils_test.cc

Index: net/quic/platform/api/quic_text_utils_test.cc
diff --git a/net/quic/platform/api/quic_text_utils_test.cc b/net/quic/platform/api/quic_text_utils_test.cc
new file mode 100644
index 0000000000000000000000000000000000000000..499740c56bfd234cb7b946483f18d5550336a24a
--- /dev/null
+++ b/net/quic/platform/api/quic_text_utils_test.cc
@@ -0,0 +1,139 @@
+// Copyright 2016 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 "net/quic/platform/api/quic_text_utils.h"
+
+#include <string>
+
+#include "base/strings/string_piece.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+using base::StringPiece;
+using std::string;
+
+namespace net {
+namespace test {
+
+TEST(QuicQuicTextUtilsText, StartsWith) {
+  EXPECT_TRUE(QuicTextUtils::StartsWith("hello world", "hello"));
+  EXPECT_TRUE(QuicTextUtils::StartsWith("hello world", "hello world"));
+  EXPECT_TRUE(QuicTextUtils::StartsWith("hello world", ""));
+  EXPECT_FALSE(QuicTextUtils::StartsWith("hello world", "Hello"));
+  EXPECT_FALSE(QuicTextUtils::StartsWith("hello world", "world"));
+  EXPECT_FALSE(QuicTextUtils::StartsWith("hello world", "bar"));
+}
+
+TEST(QuicQuicTextUtilsText, EndsWithIgnoreCase) {
+  EXPECT_TRUE(QuicTextUtils::EndsWithIgnoreCase("hello world", "world"));
+  EXPECT_TRUE(QuicTextUtils::EndsWithIgnoreCase("hello world", "hello world"));
+  EXPECT_TRUE(QuicTextUtils::EndsWithIgnoreCase("hello world", ""));
+  EXPECT_TRUE(QuicTextUtils::EndsWithIgnoreCase("hello world", "WORLD"));
+  EXPECT_FALSE(QuicTextUtils::EndsWithIgnoreCase("hello world", "hello"));
+}
+
+TEST(QuicQuicTextUtilsText, ToLower) {
+  EXPECT_EQ("lower", QuicTextUtils::ToLower("LOWER"));
+  EXPECT_EQ("lower", QuicTextUtils::ToLower("lower"));
+  EXPECT_EQ("lower", QuicTextUtils::ToLower("lOwEr"));
+  EXPECT_EQ("123", QuicTextUtils::ToLower("123"));
+  EXPECT_EQ("", QuicTextUtils::ToLower(""));
+}
+
+TEST(QuicQuicTextUtilsText, RemoveLeadingAndTrailingWhitespace) {
+  string input;
+
+  for (auto input : {"text", " text", "  text", "text ", "text  ", " text ",
+                     "  text  ", "\r\n\ttext", "text\n\r\t"}) {
+    StringPiece piece(input);
+    QuicTextUtils::RemoveLeadingAndTrailingWhitespace(&piece);
+    EXPECT_EQ("text", piece);
+  }
+}
+
+TEST(QuicQuicTextUtilsText, StringToUint64) {
+  uint64_t val = 0;
+  EXPECT_TRUE(QuicTextUtils::StringToUint64("123", &val));
+  EXPECT_EQ(123u, val);
+  EXPECT_TRUE(QuicTextUtils::StringToUint64("1234", &val));
+  EXPECT_EQ(1234u, val);
+  EXPECT_FALSE(QuicTextUtils::StringToUint64("", &val));
+  EXPECT_FALSE(QuicTextUtils::StringToUint64("-123", &val));
+  EXPECT_FALSE(QuicTextUtils::StringToUint64("-123.0", &val));
+}
+
+TEST(QuicQuicTextUtilsText, Uint64ToString) {
+  EXPECT_EQ("123", QuicTextUtils::Uint64ToString(123));
+  EXPECT_EQ("1234", QuicTextUtils::Uint64ToString(1234));
+}
+
+TEST(QuicQuicTextUtilsText, HexEncode) {
+  EXPECT_EQ("48656c6c6f", QuicTextUtils::HexEncode("Hello", 5));

[Jana, 2016/12/27 23:52:49]

nit: Make this call HexEncode("HelloWorld", 5) so that you check that the length
variable is being respected.

[Ryan Hamilton, 2016/12/28 01:48:38]

Done.

+  EXPECT_EQ("48656c6c6f", QuicTextUtils::HexEncode("Hello"));
+}
+
+TEST(QuicQuicTextUtilsText, HexDecode) {
+  EXPECT_EQ("Hello", QuicTextUtils::HexDecode("48656c6c6f"));
+  EXPECT_EQ("", QuicTextUtils::HexDecode(""));
+  EXPECT_EQ(string("\0\0", 2), QuicTextUtils::HexDecode("zzzz"));
+}
+
+TEST(QuicQuicTextUtilsText, HexDump) {
+  // Verify output of the HexDump method is as expected.
+  char packet[] = {
+      0x48, 0x65, 0x6c, 0x6c, 0x6f, 0x2c, 0x20, 0x51, 0x55, 0x49, 0x43, 0x21,
+      0x20, 0x54, 0x68, 0x69, 0x73, 0x20, 0x73, 0x74, 0x72, 0x69, 0x6e, 0x67,
+      0x20, 0x73, 0x68, 0x6f, 0x75, 0x6c, 0x64, 0x20, 0x62, 0x65, 0x20, 0x6c,
+      0x6f, 0x6e, 0x67, 0x20, 0x65, 0x6e, 0x6f, 0x75, 0x67, 0x68, 0x20, 0x74,
+      0x6f, 0x20, 0x73, 0x70, 0x61, 0x6e, 0x20, 0x6d, 0x75, 0x6c, 0x74, 0x69,
+      0x70, 0x6c, 0x65, 0x20, 0x6c, 0x69, 0x6e, 0x65, 0x73, 0x20, 0x6f, 0x66,
+      0x20, 0x6f, 0x75, 0x74, 0x70, 0x75, 0x74, 0x2e, 0x01, 0x02, 0x03, 0x00,
+  };
+  EXPECT_EQ(
+      QuicTextUtils::HexDump(packet),
+      "0x0000:  4865 6c6c 6f2c 2051 5549 4321 2054 6869  Hello,.QUIC!.Thi\n"
+      "0x0010:  7320 7374 7269 6e67 2073 686f 756c 6420  s.string.should.\n"
+      "0x0020:  6265 206c 6f6e 6720 656e 6f75 6768 2074  be.long.enough.t\n"
+      "0x0030:  6f20 7370 616e 206d 756c 7469 706c 6520  o.span.multiple.\n"
+      "0x0040:  6c69 6e65 7320 6f66 206f 7574 7075 742e  lines.of.output.\n"
+      "0x0050:  0102 03                                  ...\n");
+}
+
+TEST(QuicQuicTextUtilsText, Base64Encode) {
+  string output;
+  string input = "Hello";
+  QuicTextUtils::Base64Encode(reinterpret_cast<const uint8_t*>(input.data()),
+                              input.length(), &output);
+  EXPECT_EQ("SGVsbG8", output);
+
+  input =
+      "Hello, QUIC! This string should be long enough to span"
+      "multiple lines of output\n";
+  QuicTextUtils::Base64Encode(reinterpret_cast<const uint8_t*>(input.data()),
+                              input.length(), &output);
+  EXPECT_EQ(
+      "SGVsbG8sIFFVSUMhIFRoaXMgc3RyaW5nIHNob3VsZCBiZSBsb25n"
+      "IGVub3VnaCB0byBzcGFubXVsdGlwbGUgbGluZXMgb2Ygb3V0cHV0Cg",
+      output);
+}
+
+TEST(QuicQuicTextUtilsText, ContainsUpperCase) {
+  EXPECT_FALSE(QuicTextUtils::ContainsUpperCase("abc"));
+  EXPECT_FALSE(QuicTextUtils::ContainsUpperCase(""));
+  EXPECT_FALSE(QuicTextUtils::ContainsUpperCase("123"));
+  EXPECT_TRUE(QuicTextUtils::ContainsUpperCase("ABC"));
+  EXPECT_TRUE(QuicTextUtils::ContainsUpperCase("aBc"));
+}
+
+TEST(QuicQuicTextUtilsText, Split) {
+  EXPECT_EQ(std::vector<StringPiece>({"a", "b", "c"}),
+            QuicTextUtils::Split("a,b,c", ','));
+  EXPECT_EQ(std::vector<StringPiece>({"a", "b", "c"}),
+            QuicTextUtils::Split("a:b:c", ':'));
+  EXPECT_EQ(std::vector<StringPiece>({"a:b:c"}),
+            QuicTextUtils::Split("a:b:c", ','));
+  EXPECT_EQ(std::vector<StringPiece>({""}), QuicTextUtils::Split("", ','));
+}
+
+}  // namespace test
+}  // namespace net