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 "leb128.h" 6 7 #include <vector> 8 #include "testing/gtest/include/gtest/gtest.h" 9 10 namespace relocation_packer { 11 12 TEST(Leb128, Encoder) { 13 std::vector<uint32_t> values; 14 values.push_back(624485u); 15 values.push_back(0u); 16 values.push_back(1u); 17 values.push_back(127u); 18 values.push_back(128u); 19 20 Leb128Encoder encoder; 21 encoder.EnqueueAll(values); 22 23 std::vector<uint8_t> encoding; 24 encoder.GetEncoding(&encoding); 25 26 EXPECT_EQ(8u, encoding.size()); 27 // 624485 28 EXPECT_EQ(0xe5, encoding[0]); 29 EXPECT_EQ(0x8e, encoding[1]); 30 EXPECT_EQ(0x26, encoding[2]); 31 // 0 32 EXPECT_EQ(0x00, encoding[3]); 33 // 1 34 EXPECT_EQ(0x01, encoding[4]); 35 // 127 36 EXPECT_EQ(0x7f, encoding[5]); 37 // 128 38 EXPECT_EQ(0x80, encoding[6]); 39 EXPECT_EQ(0x01, encoding[7]); 40 41 encoder.Enqueue(4294967295u); 42 43 encoding.clear(); 44 encoder.GetEncoding(&encoding); 45 46 EXPECT_EQ(13u, encoding.size()); 47 // 4294967295 48 EXPECT_EQ(0xff, encoding[8]); 49 EXPECT_EQ(0xff, encoding[9]); 50 EXPECT_EQ(0xff, encoding[10]); 51 EXPECT_EQ(0xff, encoding[11]); 52 EXPECT_EQ(0x0f, encoding[12]); 53 } 54 55 TEST(Leb128, Decoder) { 56 std::vector<uint8_t> encoding; 57 // 624485 58 encoding.push_back(0xe5); 59 encoding.push_back(0x8e); 60 encoding.push_back(0x26); 61 // 0 62 encoding.push_back(0x00); 63 // 1 64 encoding.push_back(0x01); 65 // 127 66 encoding.push_back(0x7f); 67 // 128 68 encoding.push_back(0x80); 69 encoding.push_back(0x01); 70 // 4294967295 71 encoding.push_back(0xff); 72 encoding.push_back(0xff); 73 encoding.push_back(0xff); 74 encoding.push_back(0xff); 75 encoding.push_back(0x0f); 76 77 Leb128Decoder decoder(encoding); 78 79 EXPECT_EQ(624485u, decoder.Dequeue()); 80 81 std::vector<uint32_t> dequeued; 82 decoder.DequeueAll(&dequeued); 83 84 EXPECT_EQ(5u, dequeued.size()); 85 EXPECT_EQ(0u, dequeued[0]); 86 EXPECT_EQ(1u, dequeued[1]); 87 EXPECT_EQ(127u, dequeued[2]); 88 EXPECT_EQ(128u, dequeued[3]); 89 EXPECT_EQ(4294967295u, dequeued[4]); 90 } 91 92 } // namespace relocation_packer 93
