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| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 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 "components/packed_ct_ev_whitelist/bit_stream_reader.h" | |
| 6 | |
| 7 #include <stddef.h> | |
| 8 #include <stdint.h> | |
| 9 | |
| 10 #include <algorithm> | |
| 11 #include <string> | |
| 12 | |
| 13 #include "testing/gtest/include/gtest/gtest.h" | |
| 14 | |
| 15 namespace packed_ct_ev_whitelist { | |
| 16 namespace internal { | |
| 17 | |
| 18 const uint8_t kSomeData[] = {0xd5, 0xe2, 0xaf, 0xe5, 0xbb, 0x10, 0x7c, 0xd1}; | |
| 19 | |
| 20 TEST(BitStreamReaderTest, CanReadSingleByte) { | |
| 21 BitStreamReader reader( | |
| 22 base::StringPiece(reinterpret_cast<const char*>(kSomeData), 1)); | |
| 23 uint64_t v(0); | |
| 24 | |
| 25 EXPECT_EQ(8u, reader.BitsLeft()); | |
| 26 EXPECT_TRUE(reader.ReadBits(8, &v)); | |
| 27 EXPECT_EQ(UINT64_C(0xd5), v); | |
| 28 | |
| 29 EXPECT_FALSE(reader.ReadBits(1, &v)); | |
| 30 EXPECT_EQ(0u, reader.BitsLeft()); | |
| 31 } | |
| 32 | |
| 33 TEST(BitStreamReaderTest, CanReadSingleBits) { | |
| 34 const uint64_t expected_bits[] = { | |
| 35 1, 1, 0, 1, 0, 1, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0}; | |
| 36 BitStreamReader reader( | |
| 37 base::StringPiece(reinterpret_cast<const char*>(kSomeData), 2)); | |
| 38 EXPECT_EQ(16u, reader.BitsLeft()); | |
| 39 uint64_t v(0); | |
| 40 | |
| 41 for (int i = 0; i < 16; ++i) { | |
| 42 EXPECT_TRUE(reader.ReadBits(1, &v)); | |
| 43 EXPECT_EQ(expected_bits[i], v); | |
| 44 } | |
| 45 EXPECT_EQ(0u, reader.BitsLeft()); | |
| 46 } | |
| 47 | |
| 48 TEST(BitStreamReaderTest, CanReadBitGroups) { | |
| 49 BitStreamReader reader( | |
| 50 base::StringPiece(reinterpret_cast<const char*>(kSomeData), 3)); | |
| 51 EXPECT_EQ(24u, reader.BitsLeft()); | |
| 52 uint64_t v(0); | |
| 53 uint64_t res(0); | |
| 54 | |
| 55 EXPECT_TRUE(reader.ReadBits(5, &v)); | |
| 56 res |= v << 19; | |
| 57 EXPECT_EQ(19u, reader.BitsLeft()); | |
| 58 EXPECT_TRUE(reader.ReadBits(13, &v)); | |
| 59 res |= v << 6; | |
| 60 EXPECT_EQ(6u, reader.BitsLeft()); | |
| 61 EXPECT_TRUE(reader.ReadBits(6, &v)); | |
| 62 res |= v; | |
| 63 EXPECT_EQ(UINT64_C(0xd5e2af), res); | |
| 64 | |
| 65 EXPECT_FALSE(reader.ReadBits(1, &v)); | |
| 66 } | |
| 67 | |
| 68 TEST(BitStreamReaderTest, CanRead64Bit) { | |
| 69 BitStreamReader reader( | |
| 70 base::StringPiece(reinterpret_cast<const char*>(kSomeData), 8)); | |
| 71 EXPECT_EQ(64u, reader.BitsLeft()); | |
| 72 uint64_t v(0); | |
| 73 | |
| 74 EXPECT_TRUE(reader.ReadBits(64, &v)); | |
| 75 EXPECT_EQ(UINT64_C(0xd5e2afe5bb107cd1), v); | |
| 76 } | |
| 77 | |
| 78 TEST(BitStreamReaderTest, CanReadUnaryEncodedNumbers) { | |
| 79 internal::BitStreamReader reader( | |
| 80 base::StringPiece(reinterpret_cast<const char*>(kSomeData), 3)); | |
| 81 const uint64_t expected_values[] = {2, 1, 1, 4, 0, 0, 1, 1, 1, 4}; | |
| 82 uint64_t v(0); | |
| 83 for (int i = 0; i < 10; ++i) { | |
| 84 EXPECT_TRUE(reader.ReadUnaryEncoding(&v)); | |
| 85 EXPECT_EQ(expected_values[i], v) << "Values differ at position " << i; | |
| 86 } | |
| 87 } | |
| 88 | |
| 89 TEST(BitStreamReaderTest, CannotReadFromEmptyStream) { | |
| 90 BitStreamReader reader(base::StringPiece( | |
| 91 reinterpret_cast<const char*>(kSomeData), static_cast<size_t>(0u))); | |
| 92 uint64_t v(0); | |
| 93 | |
| 94 EXPECT_EQ(0u, reader.BitsLeft()); | |
| 95 EXPECT_FALSE(reader.ReadBits(1, &v)); | |
| 96 EXPECT_FALSE(reader.ReadUnaryEncoding(&v)); | |
| 97 } | |
| 98 | |
| 99 } // namespace internal | |
| 100 } // namespace packed_ct_ev_whitelist | |
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Chromium Code Reviews
Issue 2937563002:
Remove the EV Certs Whitelist (Closed)
