base/stringencode_unittest.cc - src/webrtc - Git at Google

 /*
  *  Copyright 2004 The WebRTC Project Authors. All rights reserved.
  *
  *  Use of this source code is governed by a BSD-style license
  *  that can be found in the LICENSE file in the root of the source
  *  tree. An additional intellectual property rights grant can be found
  *  in the file PATENTS.  All contributing project authors may
  *  be found in the AUTHORS file in the root of the source tree.
  */

 #include "webrtc/base/common.h"
 #include "webrtc/base/gunit.h"
 #include "webrtc/base/stringencode.h"
 #include "webrtc/base/stringutils.h"

 namespace rtc {

 TEST(Utf8EncodeTest, EncodeDecode) {
   const struct Utf8Test {
     const char* encoded;
     size_t encsize, enclen;
     unsigned long decoded;
   } kTests[] = {
     { "a    ",             5, 1, 'a' },
     { "\x7F    ",          5, 1, 0x7F },
     { "\xC2\x80   ",       5, 2, 0x80 },
     { "\xDF\xBF   ",       5, 2, 0x7FF },
     { "\xE0\xA0\x80  ",    5, 3, 0x800 },
     { "\xEF\xBF\xBF  ",    5, 3, 0xFFFF },
     { "\xF0\x90\x80\x80 ", 5, 4, 0x10000 },
     { "\xF0\x90\x80\x80 ", 3, 0, 0x10000 },
     { "\xF0\xF0\x80\x80 ", 5, 0, 0 },
     { "\xF0\x90\x80  ",    5, 0, 0 },
     { "\x90\x80\x80  ",    5, 0, 0 },
     { NULL, 0, 0 },
   };
   for (size_t i = 0; kTests[i].encoded; ++i) {
     unsigned long val = 0;
     ASSERT_EQ(kTests[i].enclen, utf8_decode(kTests[i].encoded,
                                             kTests[i].encsize,
                                             &val));
     unsigned long result = (kTests[i].enclen == 0) ? 0 : kTests[i].decoded;
     ASSERT_EQ(result, val);

     if (kTests[i].decoded == 0) {
       // Not an interesting encoding test case
       continue;
     }

     char buffer[5];
     memset(buffer, 0x01, ARRAY_SIZE(buffer));
     ASSERT_EQ(kTests[i].enclen, utf8_encode(buffer,
                                             kTests[i].encsize,
                                             kTests[i].decoded));
     ASSERT_TRUE(memcmp(buffer, kTests[i].encoded, kTests[i].enclen) == 0);
     // Make sure remainder of buffer is unchanged
     ASSERT_TRUE(memory_check(buffer + kTests[i].enclen,
                              0x1,
                              ARRAY_SIZE(buffer) - kTests[i].enclen));
   }
 }

 class HexEncodeTest : public testing::Test {
  public:
   HexEncodeTest() : enc_res_(0), dec_res_(0) {
     for (size_t i = 0; i < sizeof(data_); ++i) {
       data_[i] = (i + 128) & 0xff;
     }
     memset(decoded_, 0x7f, sizeof(decoded_));
   }

   char data_[10];
   char encoded_[31];
   char decoded_[11];
   size_t enc_res_;
   size_t dec_res_;
 };

 // Test that we can convert to/from hex with no delimiter.
 TEST_F(HexEncodeTest, TestWithNoDelimiter) {
   enc_res_ = hex_encode(encoded_, sizeof(encoded_), data_, sizeof(data_));
   ASSERT_EQ(sizeof(data_) * 2, enc_res_);
   ASSERT_STREQ("80818283848586878889", encoded_);
   dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
   ASSERT_EQ(sizeof(data_), dec_res_);
   ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
 }

 // Test that we can convert to/from hex with a colon delimiter.
 TEST_F(HexEncodeTest, TestWithDelimiter) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
                                        data_, sizeof(data_), ':');
   ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
   ASSERT_STREQ("80:81:82:83:84:85:86:87:88:89", encoded_);
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
                                        encoded_, enc_res_, ':');
   ASSERT_EQ(sizeof(data_), dec_res_);
   ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
 }

 // Test that encoding with one delimiter and decoding with another fails.
 TEST_F(HexEncodeTest, TestWithWrongDelimiter) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
                                        data_, sizeof(data_), ':');
   ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
                                        encoded_, enc_res_, '/');
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that encoding without a delimiter and decoding with one fails.
 TEST_F(HexEncodeTest, TestExpectedDelimiter) {
   enc_res_ = hex_encode(encoded_, sizeof(encoded_), data_, sizeof(data_));
   ASSERT_EQ(sizeof(data_) * 2, enc_res_);
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
                                        encoded_, enc_res_, ':');
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that encoding with a delimiter and decoding without one fails.
 TEST_F(HexEncodeTest, TestExpectedNoDelimiter) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
                                        data_, sizeof(data_), ':');
   ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
   dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that we handle a zero-length buffer with no delimiter.
 TEST_F(HexEncodeTest, TestZeroLengthNoDelimiter) {
   enc_res_ = hex_encode(encoded_, sizeof(encoded_), "", 0);
   ASSERT_EQ(0U, enc_res_);
   dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that we handle a zero-length buffer with a delimiter.
 TEST_F(HexEncodeTest, TestZeroLengthWithDelimiter) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_), "", 0, ':');
   ASSERT_EQ(0U, enc_res_);
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
                                        encoded_, enc_res_, ':');
   ASSERT_EQ(0U, dec_res_);
 }

 // Test the std::string variants that take no delimiter.
 TEST_F(HexEncodeTest, TestHelpersNoDelimiter) {
   std::string result = hex_encode(data_, sizeof(data_));
   ASSERT_EQ("80818283848586878889", result);
   dec_res_ = hex_decode(decoded_, sizeof(decoded_), result);
   ASSERT_EQ(sizeof(data_), dec_res_);
   ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
 }

 // Test the std::string variants that use a delimiter.
 TEST_F(HexEncodeTest, TestHelpersWithDelimiter) {
   std::string result = hex_encode_with_delimiter(data_, sizeof(data_), ':');
   ASSERT_EQ("80:81:82:83:84:85:86:87:88:89", result);
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), result, ':');
   ASSERT_EQ(sizeof(data_), dec_res_);
   ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
 }

 // Test that encoding into a too-small output buffer (without delimiter) fails.
 TEST_F(HexEncodeTest, TestEncodeTooShort) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(data_) * 2,
                                        data_, sizeof(data_), 0);
   ASSERT_EQ(0U, enc_res_);
 }

 // Test that encoding into a too-small output buffer (with delimiter) fails.
 TEST_F(HexEncodeTest, TestEncodeWithDelimiterTooShort) {
   enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(data_) * 3 - 1,
                                        data_, sizeof(data_), ':');
   ASSERT_EQ(0U, enc_res_);
 }

 // Test that decoding into a too-small output buffer fails.
 TEST_F(HexEncodeTest, TestDecodeTooShort) {
   dec_res_ = hex_decode_with_delimiter(decoded_, 4, "0123456789", 10, 0);
   ASSERT_EQ(0U, dec_res_);
   ASSERT_EQ(0x7f, decoded_[4]);
 }

 // Test that decoding non-hex data fails.
 TEST_F(HexEncodeTest, TestDecodeBogusData) {
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), "xyz", 3, 0);
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that decoding an odd number of hex characters fails.
 TEST_F(HexEncodeTest, TestDecodeOddHexDigits) {
   dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), "012", 3, 0);
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that decoding a string with too many delimiters fails.
 TEST_F(HexEncodeTest, TestDecodeWithDelimiterTooManyDelimiters) {
   dec_res_ = hex_decode_with_delimiter(decoded_, 4, "01::23::45::67", 14, ':');
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that decoding a string with a leading delimiter fails.
 TEST_F(HexEncodeTest, TestDecodeWithDelimiterLeadingDelimiter) {
   dec_res_ = hex_decode_with_delimiter(decoded_, 4, ":01:23:45:67", 12, ':');
   ASSERT_EQ(0U, dec_res_);
 }

 // Test that decoding a string with a trailing delimiter fails.
 TEST_F(HexEncodeTest, TestDecodeWithDelimiterTrailingDelimiter) {
   dec_res_ = hex_decode_with_delimiter(decoded_, 4, "01:23:45:67:", 12, ':');
   ASSERT_EQ(0U, dec_res_);
 }

 // Tests counting substrings.
 TEST(TokenizeTest, CountSubstrings) {
   std::vector<std::string> fields;

   EXPECT_EQ(5ul, tokenize("one two three four five", ' ', &fields));
   fields.clear();
   EXPECT_EQ(1ul, tokenize("one", ' ', &fields));

   // Extra spaces should be ignored.
   fields.clear();
   EXPECT_EQ(5ul, tokenize("  one    two  three    four five  ", ' ', &fields));
   fields.clear();
   EXPECT_EQ(1ul, tokenize("  one  ", ' ', &fields));
   fields.clear();
   EXPECT_EQ(0ul, tokenize(" ", ' ', &fields));
 }

 // Tests comparing substrings.
 TEST(TokenizeTest, CompareSubstrings) {
   std::vector<std::string> fields;

   tokenize("find middle one", ' ', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("middle", fields.at(1).c_str());
   fields.clear();

   // Extra spaces should be ignored.
   tokenize("  find   middle  one    ", ' ', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("middle", fields.at(1).c_str());
   fields.clear();
   tokenize(" ", ' ', &fields);
   ASSERT_EQ(0ul, fields.size());
 }

 TEST(TokenizeTest, TokenizeAppend) {
   ASSERT_EQ(0ul, tokenize_append("A B C", ' ', NULL));

   std::vector<std::string> fields;

   tokenize_append("A B C", ' ', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("B", fields.at(1).c_str());

   tokenize_append("D E", ' ', &fields);
   ASSERT_EQ(5ul, fields.size());
   ASSERT_STREQ("B", fields.at(1).c_str());
   ASSERT_STREQ("E", fields.at(4).c_str());
 }

 TEST(TokenizeTest, TokenizeWithMarks) {
   ASSERT_EQ(0ul, tokenize("D \"A B", ' ', '(', ')', NULL));

   std::vector<std::string> fields;
   tokenize("A B C", ' ', '"', '"', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("C", fields.at(2).c_str());

   tokenize("\"A B\" C", ' ', '"', '"', &fields);
   ASSERT_EQ(2ul, fields.size());
   ASSERT_STREQ("A B", fields.at(0).c_str());

   tokenize("D \"A B\" C", ' ', '"', '"', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("D", fields.at(0).c_str());
   ASSERT_STREQ("A B", fields.at(1).c_str());

   tokenize("D \"A B\" C \"E F\"", ' ', '"', '"', &fields);
   ASSERT_EQ(4ul, fields.size());
   ASSERT_STREQ("D", fields.at(0).c_str());
   ASSERT_STREQ("A B", fields.at(1).c_str());
   ASSERT_STREQ("E F", fields.at(3).c_str());

   // No matching marks.
   tokenize("D \"A B", ' ', '"', '"', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("D", fields.at(0).c_str());
   ASSERT_STREQ("\"A", fields.at(1).c_str());

   tokenize("D (A B) C (E F) G", ' ', '(', ')', &fields);
   ASSERT_EQ(5ul, fields.size());
   ASSERT_STREQ("D", fields.at(0).c_str());
   ASSERT_STREQ("A B", fields.at(1).c_str());
   ASSERT_STREQ("E F", fields.at(3).c_str());
 }

 TEST(TokenizeFirstTest, NoLeadingSpaces) {
   std::string token;
   std::string rest;

   ASSERT_TRUE(tokenize_first("A &*${}", ' ', &token, &rest));
   ASSERT_STREQ("A", token.c_str());
   ASSERT_STREQ("&*${}", rest.c_str());

   ASSERT_TRUE(tokenize_first("A B& *${}", ' ', &token, &rest));
   ASSERT_STREQ("A", token.c_str());
   ASSERT_STREQ("B& *${}", rest.c_str());

   ASSERT_TRUE(tokenize_first("A    B& *${}    ", ' ', &token, &rest));
   ASSERT_STREQ("A", token.c_str());
   ASSERT_STREQ("B& *${}    ", rest.c_str());
 }

 TEST(TokenizeFirstTest, LeadingSpaces) {
   std::string token;
   std::string rest;

   ASSERT_TRUE(tokenize_first("     A B C", ' ', &token, &rest));
   ASSERT_STREQ("", token.c_str());
   ASSERT_STREQ("A B C", rest.c_str());

   ASSERT_TRUE(tokenize_first("     A    B   C    ", ' ', &token, &rest));
   ASSERT_STREQ("", token.c_str());
   ASSERT_STREQ("A    B   C    ", rest.c_str());
 }

 TEST(TokenizeFirstTest, SingleToken) {
   std::string token;
   std::string rest;

   // In the case where we cannot find delimiter the whole string is a token.
   ASSERT_FALSE(tokenize_first("ABC", ' ', &token, &rest));

   ASSERT_TRUE(tokenize_first("ABC    ", ' ', &token, &rest));
   ASSERT_STREQ("ABC", token.c_str());
   ASSERT_STREQ("", rest.c_str());

   ASSERT_TRUE(tokenize_first("    ABC    ", ' ', &token, &rest));
   ASSERT_STREQ("", token.c_str());
   ASSERT_STREQ("ABC    ", rest.c_str());
 }

 // Tests counting substrings.
 TEST(SplitTest, CountSubstrings) {
   std::vector<std::string> fields;

   EXPECT_EQ(5ul, split("one,two,three,four,five", ',', &fields));
   fields.clear();
   EXPECT_EQ(1ul, split("one", ',', &fields));

   // Empty fields between commas count.
   fields.clear();
   EXPECT_EQ(5ul, split("one,,three,four,five", ',', &fields));
   fields.clear();
   EXPECT_EQ(3ul, split(",three,", ',', &fields));
   fields.clear();
   EXPECT_EQ(1ul, split("", ',', &fields));
 }

 // Tests comparing substrings.
 TEST(SplitTest, CompareSubstrings) {
   std::vector<std::string> fields;

   split("find,middle,one", ',', &fields);
   ASSERT_EQ(3ul, fields.size());
   ASSERT_STREQ("middle", fields.at(1).c_str());
   fields.clear();

   // Empty fields between commas count.
   split("find,,middle,one", ',', &fields);
   ASSERT_EQ(4ul, fields.size());
   ASSERT_STREQ("middle", fields.at(2).c_str());
   fields.clear();
   split("", ',', &fields);
   ASSERT_EQ(1ul, fields.size());
   ASSERT_STREQ("", fields.at(0).c_str());
 }

 TEST(BoolTest, DecodeValid) {
   bool value;
   EXPECT_TRUE(FromString("true", &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(FromString("true,", &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(FromString("true , true", &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(FromString("true ,\n false", &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(FromString("  true  \n", &value));
   EXPECT_TRUE(value);

   EXPECT_TRUE(FromString("false", &value));
   EXPECT_FALSE(value);
   EXPECT_TRUE(FromString("  false ", &value));
   EXPECT_FALSE(value);
   EXPECT_TRUE(FromString("  false, ", &value));
   EXPECT_FALSE(value);

   EXPECT_TRUE(FromString<bool>("true\n"));
   EXPECT_FALSE(FromString<bool>("false\n"));
 }

 TEST(BoolTest, DecodeInvalid) {
   bool value;
   EXPECT_FALSE(FromString("True", &value));
   EXPECT_FALSE(FromString("TRUE", &value));
   EXPECT_FALSE(FromString("False", &value));
   EXPECT_FALSE(FromString("FALSE", &value));
   EXPECT_FALSE(FromString("0", &value));
   EXPECT_FALSE(FromString("1", &value));
   EXPECT_FALSE(FromString("0,", &value));
   EXPECT_FALSE(FromString("1,", &value));
   EXPECT_FALSE(FromString("1,0", &value));
   EXPECT_FALSE(FromString("1.", &value));
   EXPECT_FALSE(FromString("1.0", &value));
   EXPECT_FALSE(FromString("", &value));
   EXPECT_FALSE(FromString<bool>("false\nfalse"));
 }

 TEST(BoolTest, RoundTrip) {
   bool value;
   EXPECT_TRUE(FromString(ToString(true), &value));
   EXPECT_TRUE(value);
   EXPECT_TRUE(FromString(ToString(false), &value));
   EXPECT_FALSE(value);
 }
 }  // namespace rtc
	/*
	* Copyright 2004 The WebRTC Project Authors. All rights reserved.
	*
	* Use of this source code is governed by a BSD-style license
	* that can be found in the LICENSE file in the root of the source
	* tree. An additional intellectual property rights grant can be found
	* in the file PATENTS. All contributing project authors may
	* be found in the AUTHORS file in the root of the source tree.
	*/

	#include "webrtc/base/common.h"
	#include "webrtc/base/gunit.h"
	#include "webrtc/base/stringencode.h"
	#include "webrtc/base/stringutils.h"

	namespace rtc {

	TEST(Utf8EncodeTest, EncodeDecode) {
	const struct Utf8Test {
	const char* encoded;
	size_t encsize, enclen;
	unsigned long decoded;
	} kTests[] = {
	{ "a ", 5, 1, 'a' },
	{ "\x7F ", 5, 1, 0x7F },
	{ "\xC2\x80 ", 5, 2, 0x80 },
	{ "\xDF\xBF ", 5, 2, 0x7FF },
	{ "\xE0\xA0\x80 ", 5, 3, 0x800 },
	{ "\xEF\xBF\xBF ", 5, 3, 0xFFFF },
	{ "\xF0\x90\x80\x80 ", 5, 4, 0x10000 },
	{ "\xF0\x90\x80\x80 ", 3, 0, 0x10000 },
	{ "\xF0\xF0\x80\x80 ", 5, 0, 0 },
	{ "\xF0\x90\x80 ", 5, 0, 0 },
	{ "\x90\x80\x80 ", 5, 0, 0 },
	{ NULL, 0, 0 },
	};
	for (size_t i = 0; kTests[i].encoded; ++i) {
	unsigned long val = 0;
	ASSERT_EQ(kTests[i].enclen, utf8_decode(kTests[i].encoded,
	kTests[i].encsize,
	&val));
	unsigned long result = (kTests[i].enclen == 0) ? 0 : kTests[i].decoded;
	ASSERT_EQ(result, val);

	if (kTests[i].decoded == 0) {
	// Not an interesting encoding test case
	continue;
	}

	char buffer[5];
	memset(buffer, 0x01, ARRAY_SIZE(buffer));
	ASSERT_EQ(kTests[i].enclen, utf8_encode(buffer,
	kTests[i].encsize,
	kTests[i].decoded));
	ASSERT_TRUE(memcmp(buffer, kTests[i].encoded, kTests[i].enclen) == 0);
	// Make sure remainder of buffer is unchanged
	ASSERT_TRUE(memory_check(buffer + kTests[i].enclen,
	0x1,
	ARRAY_SIZE(buffer) - kTests[i].enclen));
	}
	}

	class HexEncodeTest : public testing::Test {
	public:
	HexEncodeTest() : enc_res_(0), dec_res_(0) {
	for (size_t i = 0; i < sizeof(data_); ++i) {
	data_[i] = (i + 128) & 0xff;
	}
	memset(decoded_, 0x7f, sizeof(decoded_));
	}

	char data_[10];
	char encoded_[31];
	char decoded_[11];
	size_t enc_res_;
	size_t dec_res_;
	};

	// Test that we can convert to/from hex with no delimiter.
	TEST_F(HexEncodeTest, TestWithNoDelimiter) {
	enc_res_ = hex_encode(encoded_, sizeof(encoded_), data_, sizeof(data_));
	ASSERT_EQ(sizeof(data_) * 2, enc_res_);
	ASSERT_STREQ("80818283848586878889", encoded_);
	dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
	ASSERT_EQ(sizeof(data_), dec_res_);
	ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
	}

	// Test that we can convert to/from hex with a colon delimiter.
	TEST_F(HexEncodeTest, TestWithDelimiter) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
	data_, sizeof(data_), ':');
	ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
	ASSERT_STREQ("80:81:82:83:84:85:86:87:88:89", encoded_);
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
	encoded_, enc_res_, ':');
	ASSERT_EQ(sizeof(data_), dec_res_);
	ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
	}

	// Test that encoding with one delimiter and decoding with another fails.
	TEST_F(HexEncodeTest, TestWithWrongDelimiter) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
	data_, sizeof(data_), ':');
	ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
	encoded_, enc_res_, '/');
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that encoding without a delimiter and decoding with one fails.
	TEST_F(HexEncodeTest, TestExpectedDelimiter) {
	enc_res_ = hex_encode(encoded_, sizeof(encoded_), data_, sizeof(data_));
	ASSERT_EQ(sizeof(data_) * 2, enc_res_);
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
	encoded_, enc_res_, ':');
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that encoding with a delimiter and decoding without one fails.
	TEST_F(HexEncodeTest, TestExpectedNoDelimiter) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_),
	data_, sizeof(data_), ':');
	ASSERT_EQ(sizeof(data_) * 3 - 1, enc_res_);
	dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that we handle a zero-length buffer with no delimiter.
	TEST_F(HexEncodeTest, TestZeroLengthNoDelimiter) {
	enc_res_ = hex_encode(encoded_, sizeof(encoded_), "", 0);
	ASSERT_EQ(0U, enc_res_);
	dec_res_ = hex_decode(decoded_, sizeof(decoded_), encoded_, enc_res_);
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that we handle a zero-length buffer with a delimiter.
	TEST_F(HexEncodeTest, TestZeroLengthWithDelimiter) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(encoded_), "", 0, ':');
	ASSERT_EQ(0U, enc_res_);
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_),
	encoded_, enc_res_, ':');
	ASSERT_EQ(0U, dec_res_);
	}

	// Test the std::string variants that take no delimiter.
	TEST_F(HexEncodeTest, TestHelpersNoDelimiter) {
	std::string result = hex_encode(data_, sizeof(data_));
	ASSERT_EQ("80818283848586878889", result);
	dec_res_ = hex_decode(decoded_, sizeof(decoded_), result);
	ASSERT_EQ(sizeof(data_), dec_res_);
	ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
	}

	// Test the std::string variants that use a delimiter.
	TEST_F(HexEncodeTest, TestHelpersWithDelimiter) {
	std::string result = hex_encode_with_delimiter(data_, sizeof(data_), ':');
	ASSERT_EQ("80:81:82:83:84:85:86:87:88:89", result);
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), result, ':');
	ASSERT_EQ(sizeof(data_), dec_res_);
	ASSERT_EQ(0, memcmp(data_, decoded_, dec_res_));
	}

	// Test that encoding into a too-small output buffer (without delimiter) fails.
	TEST_F(HexEncodeTest, TestEncodeTooShort) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(data_) * 2,
	data_, sizeof(data_), 0);
	ASSERT_EQ(0U, enc_res_);
	}

	// Test that encoding into a too-small output buffer (with delimiter) fails.
	TEST_F(HexEncodeTest, TestEncodeWithDelimiterTooShort) {
	enc_res_ = hex_encode_with_delimiter(encoded_, sizeof(data_) * 3 - 1,
	data_, sizeof(data_), ':');
	ASSERT_EQ(0U, enc_res_);
	}

	// Test that decoding into a too-small output buffer fails.
	TEST_F(HexEncodeTest, TestDecodeTooShort) {
	dec_res_ = hex_decode_with_delimiter(decoded_, 4, "0123456789", 10, 0);
	ASSERT_EQ(0U, dec_res_);
	ASSERT_EQ(0x7f, decoded_[4]);
	}

	// Test that decoding non-hex data fails.
	TEST_F(HexEncodeTest, TestDecodeBogusData) {
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), "xyz", 3, 0);
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that decoding an odd number of hex characters fails.
	TEST_F(HexEncodeTest, TestDecodeOddHexDigits) {
	dec_res_ = hex_decode_with_delimiter(decoded_, sizeof(decoded_), "012", 3, 0);
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that decoding a string with too many delimiters fails.
	TEST_F(HexEncodeTest, TestDecodeWithDelimiterTooManyDelimiters) {
	dec_res_ = hex_decode_with_delimiter(decoded_, 4, "01::23::45::67", 14, ':');
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that decoding a string with a leading delimiter fails.
	TEST_F(HexEncodeTest, TestDecodeWithDelimiterLeadingDelimiter) {
	dec_res_ = hex_decode_with_delimiter(decoded_, 4, ":01:23:45:67", 12, ':');
	ASSERT_EQ(0U, dec_res_);
	}

	// Test that decoding a string with a trailing delimiter fails.
	TEST_F(HexEncodeTest, TestDecodeWithDelimiterTrailingDelimiter) {
	dec_res_ = hex_decode_with_delimiter(decoded_, 4, "01:23:45:67:", 12, ':');
	ASSERT_EQ(0U, dec_res_);
	}

	// Tests counting substrings.
	TEST(TokenizeTest, CountSubstrings) {
	std::vector<std::string> fields;

	EXPECT_EQ(5ul, tokenize("one two three four five", ' ', &fields));
	fields.clear();
	EXPECT_EQ(1ul, tokenize("one", ' ', &fields));

	// Extra spaces should be ignored.
	fields.clear();
	EXPECT_EQ(5ul, tokenize(" one two three four five ", ' ', &fields));
	fields.clear();
	EXPECT_EQ(1ul, tokenize(" one ", ' ', &fields));
	fields.clear();
	EXPECT_EQ(0ul, tokenize(" ", ' ', &fields));
	}

	// Tests comparing substrings.
	TEST(TokenizeTest, CompareSubstrings) {
	std::vector<std::string> fields;

	tokenize("find middle one", ' ', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("middle", fields.at(1).c_str());
	fields.clear();

	// Extra spaces should be ignored.
	tokenize(" find middle one ", ' ', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("middle", fields.at(1).c_str());
	fields.clear();
	tokenize(" ", ' ', &fields);
	ASSERT_EQ(0ul, fields.size());
	}

	TEST(TokenizeTest, TokenizeAppend) {
	ASSERT_EQ(0ul, tokenize_append("A B C", ' ', NULL));

	std::vector<std::string> fields;

	tokenize_append("A B C", ' ', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("B", fields.at(1).c_str());

	tokenize_append("D E", ' ', &fields);
	ASSERT_EQ(5ul, fields.size());
	ASSERT_STREQ("B", fields.at(1).c_str());
	ASSERT_STREQ("E", fields.at(4).c_str());
	}

	TEST(TokenizeTest, TokenizeWithMarks) {
	ASSERT_EQ(0ul, tokenize("D \"A B", ' ', '(', ')', NULL));

	std::vector<std::string> fields;
	tokenize("A B C", ' ', '"', '"', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("C", fields.at(2).c_str());

	tokenize("\"A B\" C", ' ', '"', '"', &fields);
	ASSERT_EQ(2ul, fields.size());
	ASSERT_STREQ("A B", fields.at(0).c_str());

	tokenize("D \"A B\" C", ' ', '"', '"', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("D", fields.at(0).c_str());
	ASSERT_STREQ("A B", fields.at(1).c_str());

	tokenize("D \"A B\" C \"E F\"", ' ', '"', '"', &fields);
	ASSERT_EQ(4ul, fields.size());
	ASSERT_STREQ("D", fields.at(0).c_str());
	ASSERT_STREQ("A B", fields.at(1).c_str());
	ASSERT_STREQ("E F", fields.at(3).c_str());

	// No matching marks.
	tokenize("D \"A B", ' ', '"', '"', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("D", fields.at(0).c_str());
	ASSERT_STREQ("\"A", fields.at(1).c_str());

	tokenize("D (A B) C (E F) G", ' ', '(', ')', &fields);
	ASSERT_EQ(5ul, fields.size());
	ASSERT_STREQ("D", fields.at(0).c_str());
	ASSERT_STREQ("A B", fields.at(1).c_str());
	ASSERT_STREQ("E F", fields.at(3).c_str());
	}

	TEST(TokenizeFirstTest, NoLeadingSpaces) {
	std::string token;
	std::string rest;

	ASSERT_TRUE(tokenize_first("A &*${}", ' ', &token, &rest));
	ASSERT_STREQ("A", token.c_str());
	ASSERT_STREQ("&*${}", rest.c_str());

	ASSERT_TRUE(tokenize_first("A B& *${}", ' ', &token, &rest));
	ASSERT_STREQ("A", token.c_str());
	ASSERT_STREQ("B& *${}", rest.c_str());

	ASSERT_TRUE(tokenize_first("A B& *${} ", ' ', &token, &rest));
	ASSERT_STREQ("A", token.c_str());
	ASSERT_STREQ("B& *${} ", rest.c_str());
	}

	TEST(TokenizeFirstTest, LeadingSpaces) {
	std::string token;
	std::string rest;

	ASSERT_TRUE(tokenize_first(" A B C", ' ', &token, &rest));
	ASSERT_STREQ("", token.c_str());
	ASSERT_STREQ("A B C", rest.c_str());

	ASSERT_TRUE(tokenize_first(" A B C ", ' ', &token, &rest));
	ASSERT_STREQ("", token.c_str());
	ASSERT_STREQ("A B C ", rest.c_str());
	}

	TEST(TokenizeFirstTest, SingleToken) {
	std::string token;
	std::string rest;

	// In the case where we cannot find delimiter the whole string is a token.
	ASSERT_FALSE(tokenize_first("ABC", ' ', &token, &rest));

	ASSERT_TRUE(tokenize_first("ABC ", ' ', &token, &rest));
	ASSERT_STREQ("ABC", token.c_str());
	ASSERT_STREQ("", rest.c_str());

	ASSERT_TRUE(tokenize_first(" ABC ", ' ', &token, &rest));
	ASSERT_STREQ("", token.c_str());
	ASSERT_STREQ("ABC ", rest.c_str());
	}

	// Tests counting substrings.
	TEST(SplitTest, CountSubstrings) {
	std::vector<std::string> fields;

	EXPECT_EQ(5ul, split("one,two,three,four,five", ',', &fields));
	fields.clear();
	EXPECT_EQ(1ul, split("one", ',', &fields));

	// Empty fields between commas count.
	fields.clear();
	EXPECT_EQ(5ul, split("one,,three,four,five", ',', &fields));
	fields.clear();
	EXPECT_EQ(3ul, split(",three,", ',', &fields));
	fields.clear();
	EXPECT_EQ(1ul, split("", ',', &fields));
	}

	// Tests comparing substrings.
	TEST(SplitTest, CompareSubstrings) {
	std::vector<std::string> fields;

	split("find,middle,one", ',', &fields);
	ASSERT_EQ(3ul, fields.size());
	ASSERT_STREQ("middle", fields.at(1).c_str());
	fields.clear();

	// Empty fields between commas count.
	split("find,,middle,one", ',', &fields);
	ASSERT_EQ(4ul, fields.size());
	ASSERT_STREQ("middle", fields.at(2).c_str());
	fields.clear();
	split("", ',', &fields);
	ASSERT_EQ(1ul, fields.size());
	ASSERT_STREQ("", fields.at(0).c_str());
	}

	TEST(BoolTest, DecodeValid) {
	bool value;
	EXPECT_TRUE(FromString("true", &value));
	EXPECT_TRUE(value);
	EXPECT_TRUE(FromString("true,", &value));
	EXPECT_TRUE(value);
	EXPECT_TRUE(FromString("true , true", &value));
	EXPECT_TRUE(value);
	EXPECT_TRUE(FromString("true ,\n false", &value));
	EXPECT_TRUE(value);
	EXPECT_TRUE(FromString(" true \n", &value));
	EXPECT_TRUE(value);

	EXPECT_TRUE(FromString("false", &value));
	EXPECT_FALSE(value);
	EXPECT_TRUE(FromString(" false ", &value));
	EXPECT_FALSE(value);
	EXPECT_TRUE(FromString(" false, ", &value));
	EXPECT_FALSE(value);

	EXPECT_TRUE(FromString<bool>("true\n"));
	EXPECT_FALSE(FromString<bool>("false\n"));
	}

	TEST(BoolTest, DecodeInvalid) {
	bool value;
	EXPECT_FALSE(FromString("True", &value));
	EXPECT_FALSE(FromString("TRUE", &value));
	EXPECT_FALSE(FromString("False", &value));
	EXPECT_FALSE(FromString("FALSE", &value));
	EXPECT_FALSE(FromString("0", &value));
	EXPECT_FALSE(FromString("1", &value));
	EXPECT_FALSE(FromString("0,", &value));
	EXPECT_FALSE(FromString("1,", &value));
	EXPECT_FALSE(FromString("1,0", &value));
	EXPECT_FALSE(FromString("1.", &value));
	EXPECT_FALSE(FromString("1.0", &value));
	EXPECT_FALSE(FromString("", &value));
	EXPECT_FALSE(FromString<bool>("false\nfalse"));
	}

	TEST(BoolTest, RoundTrip) {
	bool value;
	EXPECT_TRUE(FromString(ToString(true), &value));
	EXPECT_TRUE(value);
	EXPECT_TRUE(FromString(ToString(false), &value));
	EXPECT_FALSE(value);
	}
	} // namespace rtc