1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/zucchini/zucchini_gen.h"
#include <stdint.h>
#include <utility>
#include <vector>
#include "components/zucchini/equivalence_map.h"
#include "components/zucchini/image_index.h"
#include "components/zucchini/image_utils.h"
#include "components/zucchini/test_disassembler.h"
#include "testing/gtest/include/gtest/gtest.h"
namespace zucchini {
namespace {
using OffsetVector = std::vector<offset_t>;
// In normal usage, 0.0 is an unrealistic similarity value for an
// EquivalenceCandiate. Since similarity doesn't affect results for various unit
// tests in this file, we use this dummy value for simplicity.
constexpr double kDummySim = 0.0;
// Helper function wrapping GenerateReferencesDelta().
std::vector<int32_t> GenerateReferencesDeltaTest(
std::vector<Reference>&& old_references,
std::vector<Reference>&& new_references,
std::vector<offset_t>&& exp_old_targets,
std::vector<offset_t>&& exp_projected_old_targets,
EquivalenceMap&& equivalence_map) {
// OffsetMapper needs image sizes for forward-projection overflow check. These
// are tested elsewhere, so just use arbitrary large value.
constexpr offset_t kOldImageSize = 1000000;
constexpr offset_t kNewImageSize = 1001000;
ReferenceDeltaSink reference_delta_sink;
TargetPool old_targets;
old_targets.InsertTargets(old_references);
ReferenceSet old_refs({1, TypeTag(0), PoolTag(0)}, old_targets);
old_refs.InitReferences(old_references);
EXPECT_EQ(exp_old_targets, old_targets.targets());
TargetPool new_targets;
new_targets.InsertTargets(new_references);
ReferenceSet new_refs({1, TypeTag(0), PoolTag(0)}, new_targets);
new_refs.InitReferences(new_references);
OffsetMapper offset_mapper(equivalence_map, kOldImageSize, kNewImageSize);
TargetPool projected_old_targets = old_targets;
projected_old_targets.FilterAndProject(offset_mapper);
std::vector<offset_t> extra_target =
FindExtraTargets(projected_old_targets, new_targets);
projected_old_targets.InsertTargets(extra_target);
EXPECT_EQ(exp_projected_old_targets, projected_old_targets.targets());
GenerateReferencesDelta(old_refs, new_refs, projected_old_targets,
offset_mapper, equivalence_map,
&reference_delta_sink);
// Serialize |reference_delta_sink| to patch format, and read it back as
// std::vector<int32_t>.
std::vector<uint8_t> buffer(reference_delta_sink.SerializedSize());
BufferSink sink(buffer.data(), buffer.size());
reference_delta_sink.SerializeInto(&sink);
BufferSource source(buffer.data(), buffer.size());
ReferenceDeltaSource reference_delta_source;
EXPECT_TRUE(reference_delta_source.Initialize(&source));
std::vector<int32_t> delta_vec;
for (auto delta = reference_delta_source.GetNext(); delta.has_value();
delta = reference_delta_source.GetNext()) {
delta_vec.push_back(*delta);
}
EXPECT_TRUE(reference_delta_source.Done());
return delta_vec;
}
} // namespace
TEST(ZucchiniGenTest, FindExtraTargets) {
EXPECT_EQ(OffsetVector(), FindExtraTargets({}, {}));
EXPECT_EQ(OffsetVector(), FindExtraTargets(TargetPool({3}), {}));
EXPECT_EQ(OffsetVector(), FindExtraTargets(TargetPool({3}), TargetPool({3})));
EXPECT_EQ(OffsetVector({4}),
FindExtraTargets(TargetPool({3}), TargetPool({4})));
EXPECT_EQ(OffsetVector({4}),
FindExtraTargets(TargetPool({3}), TargetPool({3, 4})));
EXPECT_EQ(OffsetVector({4}),
FindExtraTargets(TargetPool({2, 3}), TargetPool({3, 4})));
EXPECT_EQ(OffsetVector({3, 5}),
FindExtraTargets(TargetPool({2, 4}), TargetPool({3, 5})));
}
TEST(ZucchiniGenTest, GenerateReferencesDelta) {
// No equivalences.
EXPECT_EQ(std::vector<int32_t>(),
GenerateReferencesDeltaTest({}, {}, {}, {}, EquivalenceMap()));
EXPECT_EQ(std::vector<int32_t>(),
GenerateReferencesDeltaTest({{10, 0}}, {{20, 0}}, {0}, {0},
EquivalenceMap()));
// Simple cases with one equivalence.
EXPECT_EQ(
std::vector<int32_t>({0}), // {0 - 0}.
GenerateReferencesDeltaTest(
{{10, 3}}, {{20, 3}}, {3}, {3},
EquivalenceMap({{{3, 3, 1}, kDummySim}, {{10, 20, 4}, kDummySim}})));
EXPECT_EQ(
std::vector<int32_t>({-1}), // {0 - 1}.
GenerateReferencesDeltaTest(
{{10, 3}}, {{20, 3}}, {3}, {3, 4},
EquivalenceMap({{{3, 4, 1}, kDummySim}, {{10, 20, 4}, kDummySim}})));
EXPECT_EQ(
std::vector<int32_t>({1}), // {1 - 0}.
GenerateReferencesDeltaTest(
{{10, 3}}, {{20, 3}}, {3}, {2, 3},
EquivalenceMap({{{3, 2, 1}, kDummySim}, {{10, 20, 4}, kDummySim}})));
EXPECT_EQ(std::vector<int32_t>({1, -1}), // {1 - 0, 0 - 1}.
GenerateReferencesDeltaTest(
{{10, 3}, {11, 4}}, {{20, 3}, {21, 4}}, {3, 4}, {2, 3, 4, 5},
EquivalenceMap({{{3, 2, 1}, kDummySim},
{{4, 5, 1}, kDummySim},
{{10, 20, 4}, kDummySim}})));
EXPECT_EQ(
std::vector<int32_t>({0, 0}), // {1 - 1, 2 - 2}.
GenerateReferencesDeltaTest(
{{10, 3}, {11, 4}, {12, 5}, {13, 6}},
{{20, 3}, {21, 4}, {22, 5}, {23, 6}}, {3, 4, 5, 6}, {3, 4, 5, 6},
EquivalenceMap({{{3, 3, 4}, kDummySim}, {{11, 21, 2}, kDummySim}})));
// Multiple equivalences.
EXPECT_EQ(std::vector<int32_t>({-1, 1}), // {0 - 1, 1 - 0}.
GenerateReferencesDeltaTest(
{{10, 0}, {12, 1}}, {{10, 0}, {12, 1}}, {0, 1}, {0, 1},
EquivalenceMap({{{0, 0, 2}, kDummySim},
{{12, 10, 2}, kDummySim},
{{10, 12, 2}, kDummySim}})));
EXPECT_EQ(
std::vector<int32_t>({0, 0}), // {0 - 0, 1 - 1}.
GenerateReferencesDeltaTest(
{{0, 0}, {2, 2}}, {{0, 0}, {2, 2}}, {0, 2}, {0, 2},
EquivalenceMap({{{2, 0, 2}, kDummySim}, {{0, 2, 2}, kDummySim}})));
EXPECT_EQ(std::vector<int32_t>({-2, 2}), // {0 - 2, 2 - 0}.
GenerateReferencesDeltaTest(
{{10, 0}, {12, 1}, {14, 2}}, {{10, 0}, {12, 1}, {14, 2}},
{0, 1, 2}, {0, 1, 2},
EquivalenceMap({{{0, 0, 3}, kDummySim},
{{14, 10, 2}, kDummySim},
{{10, 14, 2}, kDummySim}})));
EXPECT_EQ(std::vector<int32_t>({-2, 2}), // {0 - 2, 2 - 0}.
GenerateReferencesDeltaTest(
{{11, 0}, {14, 1}, {17, 2}}, {{11, 0}, {14, 1}, {17, 2}},
{0, 1, 2}, {0, 1, 2},
EquivalenceMap({{{0, 0, 3}, kDummySim},
{{16, 10, 3}, kDummySim},
{{10, 16, 3}, kDummySim}})));
EXPECT_EQ(
std::vector<int32_t>({-2, 2}), // {0 - 2, 2 - 0}.
GenerateReferencesDeltaTest({{10, 0}, {14, 2}, {16, 1}},
{{10, 0}, {14, 2}}, {0, 1, 2}, {0, 1, 2},
EquivalenceMap({{{0, 0, 3}, kDummySim},
{{14, 10, 2}, kDummySim},
{{12, 12, 2}, kDummySim},
{{10, 14, 2}, kDummySim}})));
}
// TODO(huangs): Add more tests.
} // namespace zucchini
|
