base/unguessable_token_unittest.cc - chromium/src - Git at Google

 // Copyright 2016 The Chromium Authors
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.

 #include "base/unguessable_token.h"

 #include <memory>
 #include <sstream>
 #include <type_traits>

 #include "base/hash/hash.h"
 #include "base/values.h"
 #include "testing/gtest/include/gtest/gtest.h"

 namespace base {

 void TestSmallerThanOperator(const UnguessableToken& a,
                              const UnguessableToken& b) {
   EXPECT_TRUE(a < b);
   EXPECT_FALSE(b < a);
 }

 TEST(UnguessableTokenTest, VerifyEveryBit) {
   absl::optional<UnguessableToken> token = UnguessableToken::Deserialize(1, 2);
   ASSERT_TRUE(token.has_value());
   uint64_t high = 1;
   uint64_t low = 2;

   for (uint64_t bit = 1; bit != 0; bit <<= 1) {
     uint64_t new_high = high ^ bit;
     absl::optional<UnguessableToken> new_token =
         UnguessableToken::Deserialize(new_high, low);
     ASSERT_TRUE(new_token.has_value());
     EXPECT_FALSE(*token == *new_token);
   }

   for (uint64_t bit = 1; bit != 0; bit <<= 1) {
     uint64_t new_low = low ^ bit;
     absl::optional<UnguessableToken> new_token =
         UnguessableToken::Deserialize(high, new_low);
     ASSERT_TRUE(new_token.has_value());
     EXPECT_FALSE(*token == *new_token);
   }
 }

 TEST(UnguessableTokenTest, VerifyEqualityOperators) {
   // Deserialize is used for testing purposes.
   // Use UnguessableToken::Create() in production code instead.
   UnguessableToken token = UnguessableToken::Deserialize(1, 2).value();
   UnguessableToken same_token = UnguessableToken::Deserialize(1, 2).value();
   UnguessableToken diff_token = UnguessableToken::Deserialize(1, 3).value();
   UnguessableToken empty_token;

   EXPECT_TRUE(token == token);
   EXPECT_FALSE(token != token);

   EXPECT_TRUE(token == same_token);
   EXPECT_FALSE(token != same_token);

   EXPECT_FALSE(token == diff_token);
   EXPECT_FALSE(diff_token == token);
   EXPECT_TRUE(token != diff_token);
   EXPECT_TRUE(diff_token != token);

   EXPECT_TRUE(empty_token == empty_token);
   EXPECT_FALSE(empty_token != empty_token);
   for (const UnguessableToken& this_token : {token, same_token, diff_token}) {
     EXPECT_FALSE(this_token == empty_token);
     EXPECT_TRUE(this_token != empty_token);
   }
 }

 TEST(UnguessableTokenTest, VerifyConstructors) {
   UnguessableToken token = UnguessableToken::Create();
   EXPECT_FALSE(token.is_empty());
   EXPECT_TRUE(token);

   UnguessableToken copied_token(token);
   EXPECT_TRUE(copied_token);
   EXPECT_EQ(token, copied_token);

   UnguessableToken uninitialized;
   EXPECT_TRUE(uninitialized.is_empty());
   EXPECT_FALSE(uninitialized);

   EXPECT_TRUE(UnguessableToken().is_empty());
   EXPECT_FALSE(UnguessableToken());
 }

 TEST(UnguessableTokenTest, VerifySerialization) {
   UnguessableToken token = UnguessableToken::Create();

   uint64_t high = token.GetHighForSerialization();
   uint64_t low = token.GetLowForSerialization();

   EXPECT_TRUE(high);
   EXPECT_TRUE(low);

   absl::optional<UnguessableToken> Deserialized =
       UnguessableToken::Deserialize(high, low);
   ASSERT_TRUE(Deserialized.has_value());
   EXPECT_EQ(token, *Deserialized);
 }

 // Common case (~88% of the time) - no leading zeroes in high_ nor low_.
 TEST(UnguessableTokenTest, VerifyToString1) {
   UnguessableToken token =
       UnguessableToken::Deserialize(0x1234567890ABCDEF, 0xFEDCBA0987654321)
           .value();
   std::string expected = "1234567890ABCDEFFEDCBA0987654321";

   EXPECT_EQ(expected, token.ToString());

   std::string expected_stream = "(1234567890ABCDEFFEDCBA0987654321)";
   std::stringstream stream;
   stream << token;
   EXPECT_EQ(expected_stream, stream.str());
 }

 // Less common case - leading zeroes in high_ or low_ (testing with both).
 TEST(UnguessableTokenTest, VerifyToString2) {
   UnguessableToken token = UnguessableToken::Deserialize(0x123, 0xABC).value();
   std::string expected = "00000000000001230000000000000ABC";

   EXPECT_EQ(expected, token.ToString());

   std::string expected_stream = "(00000000000001230000000000000ABC)";
   std::stringstream stream;
   stream << token;
   EXPECT_EQ(expected_stream, stream.str());
 }

 TEST(UnguessableTokenTest, VerifyToStringUniqueness) {
   const UnguessableToken token1 =
       UnguessableToken::Deserialize(0x0000000012345678, 0x0000000123456789)
           .value();
   const UnguessableToken token2 =
       UnguessableToken::Deserialize(0x0000000123456781, 0x0000000023456789)
           .value();
   EXPECT_NE(token1.ToString(), token2.ToString());
 }

 TEST(UnguessableTokenTest, VerifyDeserializeZeroes) {
   absl::optional<UnguessableToken> token = UnguessableToken::Deserialize(0, 0);

   EXPECT_FALSE(token.has_value());
 }

 TEST(UnguessableTokenTest, VerifySmallerThanOperator) {
   // Deserialize is used for testing purposes.
   // Use UnguessableToken::Create() in production code instead.
   {
     SCOPED_TRACE("a.low < b.low and a.high == b.high.");
     TestSmallerThanOperator(UnguessableToken::Deserialize(0, 1).value(),
                             UnguessableToken::Deserialize(0, 5).value());
   }
   {
     SCOPED_TRACE("a.low == b.low and a.high < b.high.");
     TestSmallerThanOperator(UnguessableToken::Deserialize(1, 0).value(),
                             UnguessableToken::Deserialize(5, 0).value());
   }
   {
     SCOPED_TRACE("a.low < b.low and a.high < b.high.");
     TestSmallerThanOperator(UnguessableToken::Deserialize(1, 1).value(),
                             UnguessableToken::Deserialize(5, 5).value());
   }
   {
     SCOPED_TRACE("a.low > b.low and a.high < b.high.");
     TestSmallerThanOperator(UnguessableToken::Deserialize(1, 10).value(),
                             UnguessableToken::Deserialize(10, 1).value());
   }
 }

 TEST(UnguessableTokenTest, VerifyHash) {
   UnguessableToken token = UnguessableToken::Create();

   EXPECT_EQ(base::HashInts64(token.GetHighForSerialization(),
                              token.GetLowForSerialization()),
             UnguessableTokenHash()(token));
 }

 TEST(UnguessableTokenTest, VerifyBasicUniqueness) {
   EXPECT_NE(UnguessableToken::Create(), UnguessableToken::Create());

   UnguessableToken token = UnguessableToken::Create();
   EXPECT_NE(token.GetHighForSerialization(), token.GetLowForSerialization());
 }
 }
	// Copyright 2016 The Chromium Authors
	// Use of this source code is governed by a BSD-style license that can be
	// found in the LICENSE file.

	#include "base/unguessable_token.h"

	#include <memory>
	#include <sstream>
	#include <type_traits>

	#include "base/hash/hash.h"
	#include "base/values.h"
	#include "testing/gtest/include/gtest/gtest.h"

	namespace base {

	void TestSmallerThanOperator(const UnguessableToken& a,
	const UnguessableToken& b) {
	EXPECT_TRUE(a < b);
	EXPECT_FALSE(b < a);
	}

	TEST(UnguessableTokenTest, VerifyEveryBit) {
	absl::optional<UnguessableToken> token = UnguessableToken::Deserialize(1, 2);
	ASSERT_TRUE(token.has_value());
	uint64_t high = 1;
	uint64_t low = 2;

	for (uint64_t bit = 1; bit != 0; bit <<= 1) {
	uint64_t new_high = high ^ bit;
	absl::optional<UnguessableToken> new_token =
	UnguessableToken::Deserialize(new_high, low);
	ASSERT_TRUE(new_token.has_value());
	EXPECT_FALSE(token == new_token);
	}

	for (uint64_t bit = 1; bit != 0; bit <<= 1) {
	uint64_t new_low = low ^ bit;
	absl::optional<UnguessableToken> new_token =
	UnguessableToken::Deserialize(high, new_low);
	ASSERT_TRUE(new_token.has_value());
	EXPECT_FALSE(token == new_token);
	}
	}

	TEST(UnguessableTokenTest, VerifyEqualityOperators) {
	// Deserialize is used for testing purposes.
	// Use UnguessableToken::Create() in production code instead.
	UnguessableToken token = UnguessableToken::Deserialize(1, 2).value();
	UnguessableToken same_token = UnguessableToken::Deserialize(1, 2).value();
	UnguessableToken diff_token = UnguessableToken::Deserialize(1, 3).value();
	UnguessableToken empty_token;

	EXPECT_TRUE(token == token);
	EXPECT_FALSE(token != token);

	EXPECT_TRUE(token == same_token);
	EXPECT_FALSE(token != same_token);

	EXPECT_FALSE(token == diff_token);
	EXPECT_FALSE(diff_token == token);
	EXPECT_TRUE(token != diff_token);
	EXPECT_TRUE(diff_token != token);

	EXPECT_TRUE(empty_token == empty_token);
	EXPECT_FALSE(empty_token != empty_token);
	for (const UnguessableToken& this_token : {token, same_token, diff_token}) {
	EXPECT_FALSE(this_token == empty_token);
	EXPECT_TRUE(this_token != empty_token);
	}
	}

	TEST(UnguessableTokenTest, VerifyConstructors) {
	UnguessableToken token = UnguessableToken::Create();
	EXPECT_FALSE(token.is_empty());
	EXPECT_TRUE(token);

	UnguessableToken copied_token(token);
	EXPECT_TRUE(copied_token);
	EXPECT_EQ(token, copied_token);

	UnguessableToken uninitialized;
	EXPECT_TRUE(uninitialized.is_empty());
	EXPECT_FALSE(uninitialized);

	EXPECT_TRUE(UnguessableToken().is_empty());
	EXPECT_FALSE(UnguessableToken());
	}

	TEST(UnguessableTokenTest, VerifySerialization) {
	UnguessableToken token = UnguessableToken::Create();

	uint64_t high = token.GetHighForSerialization();
	uint64_t low = token.GetLowForSerialization();

	EXPECT_TRUE(high);
	EXPECT_TRUE(low);

	absl::optional<UnguessableToken> Deserialized =
	UnguessableToken::Deserialize(high, low);
	ASSERT_TRUE(Deserialized.has_value());
	EXPECT_EQ(token, *Deserialized);
	}

	// Common case (~88% of the time) - no leading zeroes in high_ nor low_.
	TEST(UnguessableTokenTest, VerifyToString1) {
	UnguessableToken token =
	UnguessableToken::Deserialize(0x1234567890ABCDEF, 0xFEDCBA0987654321)
	.value();
	std::string expected = "1234567890ABCDEFFEDCBA0987654321";

	EXPECT_EQ(expected, token.ToString());

	std::string expected_stream = "(1234567890ABCDEFFEDCBA0987654321)";
	std::stringstream stream;
	stream << token;
	EXPECT_EQ(expected_stream, stream.str());
	}

	// Less common case - leading zeroes in high_ or low_ (testing with both).
	TEST(UnguessableTokenTest, VerifyToString2) {
	UnguessableToken token = UnguessableToken::Deserialize(0x123, 0xABC).value();
	std::string expected = "00000000000001230000000000000ABC";

	EXPECT_EQ(expected, token.ToString());

	std::string expected_stream = "(00000000000001230000000000000ABC)";
	std::stringstream stream;
	stream << token;
	EXPECT_EQ(expected_stream, stream.str());
	}

	TEST(UnguessableTokenTest, VerifyToStringUniqueness) {
	const UnguessableToken token1 =
	UnguessableToken::Deserialize(0x0000000012345678, 0x0000000123456789)
	.value();
	const UnguessableToken token2 =
	UnguessableToken::Deserialize(0x0000000123456781, 0x0000000023456789)
	.value();
	EXPECT_NE(token1.ToString(), token2.ToString());
	}

	TEST(UnguessableTokenTest, VerifyDeserializeZeroes) {
	absl::optional<UnguessableToken> token = UnguessableToken::Deserialize(0, 0);

	EXPECT_FALSE(token.has_value());
	}

	TEST(UnguessableTokenTest, VerifySmallerThanOperator) {
	// Deserialize is used for testing purposes.
	// Use UnguessableToken::Create() in production code instead.
	{
	SCOPED_TRACE("a.low < b.low and a.high == b.high.");
	TestSmallerThanOperator(UnguessableToken::Deserialize(0, 1).value(),
	UnguessableToken::Deserialize(0, 5).value());
	}
	{
	SCOPED_TRACE("a.low == b.low and a.high < b.high.");
	TestSmallerThanOperator(UnguessableToken::Deserialize(1, 0).value(),
	UnguessableToken::Deserialize(5, 0).value());
	}
	{
	SCOPED_TRACE("a.low < b.low and a.high < b.high.");
	TestSmallerThanOperator(UnguessableToken::Deserialize(1, 1).value(),
	UnguessableToken::Deserialize(5, 5).value());
	}
	{
	SCOPED_TRACE("a.low > b.low and a.high < b.high.");
	TestSmallerThanOperator(UnguessableToken::Deserialize(1, 10).value(),
	UnguessableToken::Deserialize(10, 1).value());
	}
	}

	TEST(UnguessableTokenTest, VerifyHash) {
	UnguessableToken token = UnguessableToken::Create();

	EXPECT_EQ(base::HashInts64(token.GetHighForSerialization(),
	token.GetLowForSerialization()),
	UnguessableTokenHash()(token));
	}

	TEST(UnguessableTokenTest, VerifyBasicUniqueness) {
	EXPECT_NE(UnguessableToken::Create(), UnguessableToken::Create());

	UnguessableToken token = UnguessableToken::Create();
	EXPECT_NE(token.GetHighForSerialization(), token.GetLowForSerialization());
	}
	}