base/token_unittest.cc

   1 // Copyright 2018 The Chromium Authors
   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 "base/token.h"
   6
   7 #include "base/pickle.h"
   8 #include "testing/gtest/include/gtest/gtest.h"
   9
  10 namespace base {
  11
  12 // Verifies that we can support constexpr Token construction.
  13 constexpr Token kTestToken{1234, 5678};
  14
  15 TEST(TokenTest, Constructors) {
  16   Token zero_token;
  17   EXPECT_EQ(0u, zero_token.high());
  18   EXPECT_EQ(0u, zero_token.low());
  19   EXPECT_TRUE(zero_token.is_zero());
  20
  21   Token token_with_explicit_values{1234, 5678};
  22   EXPECT_EQ(1234u, token_with_explicit_values.high());
  23   EXPECT_EQ(5678u, token_with_explicit_values.low());
  24   EXPECT_FALSE(token_with_explicit_values.is_zero());
  25
  26   Token random_token = Token::CreateRandom();
  27   EXPECT_FALSE(random_token.is_zero());
  28
  29   EXPECT_EQ(1234u, kTestToken.high());
  30   EXPECT_EQ(5678u, kTestToken.low());
  31   EXPECT_FALSE(kTestToken.is_zero());
  32 }
  33
  34 TEST(TokenTest, Equality) {
  35   EXPECT_EQ(Token(), Token(0, 0));
  36   EXPECT_EQ(Token(0, 0), Token(0, 0));
  37   EXPECT_EQ(Token(1, 2), Token(1, 2));
  38   EXPECT_NE(Token(1, 2), Token(1, 3));
  39   EXPECT_NE(Token(1, 2), Token(2, 2));
  40   EXPECT_NE(Token(1, 2), Token(3, 4));
  41 }
  42
  43 TEST(TokenTest, Ordering) {
  44   EXPECT_LT(Token(0, 0), Token(0, 1));
  45   EXPECT_LT(Token(0, 1), Token(0, 2));
  46   EXPECT_LT(Token(0, 1), Token(1, 0));
  47   EXPECT_LT(Token(0, 2), Token(1, 0));
  48 }
  49
  50 TEST(TokenTest, ToString) {
  51   EXPECT_EQ("00000000000000000000000000000000", Token(0, 0).ToString());
  52   EXPECT_EQ("00000000000000010000000000000002", Token(1, 2).ToString());
  53   EXPECT_EQ("0123456789ABCDEF5A5A5A5AA5A5A5A5",
  54             Token(0x0123456789abcdefull, 0x5a5a5a5aa5a5a5a5ull).ToString());
  55   EXPECT_EQ("FFFFFFFFFFFFFFFDFFFFFFFFFFFFFFFE",
  56             Token(0xfffffffffffffffdull, 0xfffffffffffffffeull).ToString());
  57 }
  58
  59 TEST(TokenTest, FromString) {
  60   // digits is 40 bytes long. We call FromString on various substrings of it,
  61   // which should only succeed when the substring is 32 bytes long.
  62   std::string digits = "3141592653589793238462643383279502884197";
  63
  64   EXPECT_EQ(Token(0x3141592653589793ull, 0x2384626433832795ull),
  65             *Token::FromString(digits.substr(0, 32)));
  66
  67   // FromString should reject any input that isn't 32 bytes long.
  68   EXPECT_FALSE(Token::FromString(digits.substr(0, 0)));
  69   EXPECT_FALSE(Token::FromString(digits.substr(0, 1)));
  70   EXPECT_FALSE(Token::FromString(digits.substr(0, 16)));
  71   EXPECT_FALSE(Token::FromString(digits.substr(0, 31)));
  72   EXPECT_TRUE(Token::FromString(digits.substr(0, 32)));
  73   EXPECT_FALSE(Token::FromString(digits.substr(0, 33)));
  74
  75   // FromString should reject any input bytes that aren't in [0-9A-F].
  76   // Specifically, lower case [a-f] bytes are also rejected.
  77   digits[5] = 'a';
  78   EXPECT_FALSE(Token::FromString(digits.substr(0, 32)));
  79   digits[5] = 'A';
  80   EXPECT_TRUE(Token::FromString(digits.substr(0, 32)));
  81 }
  82
  83 TEST(TokenTest, Pickle) {
  84   Pickle pickle;
  85   WriteTokenToPickle(&pickle, kTestToken);
  86
  87   PickleIterator iterator(pickle);
  88   EXPECT_EQ(kTestToken, ReadTokenFromPickle(&iterator));
  89 }
  90
  91 }  // namespace base