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
|
#include "sdsl/int_vector.hpp"
#include "sdsl/coder.hpp"
#include "sdsl/util.hpp"
#include "gtest/gtest.h"
#include <random>
namespace
{
using namespace sdsl;
// The fixture for testing class int_vector.
template<class T>
class coder_test : public ::testing::Test
{
protected:
coder_test()
{
m_data = sdsl::int_vector<>(10000000);
util::set_random_bits(m_data);
for (size_t i=0; i<m_data.size()/3; ++i)
m_data[i] = i;
std::mt19937_64 rng;
std::uniform_int_distribution<uint64_t> distribution(0, 6);
auto dice = bind(distribution, rng);
for (size_t i=m_data.size()/3; i<2*m_data.size()/3; ++i)
m_data[i] = dice();
}
virtual ~coder_test() { }
virtual void SetUp() { }
virtual void TearDown() { }
sdsl::int_vector<> m_data;
};
using testing::Types;
typedef Types<
coder::elias_delta<>,
coder::elias_gamma<>,
coder::fibonacci<>,
coder::comma<>,
coder::comma<4>,
coder::comma<8>,
coder::comma<16>
>
Implementations;
TYPED_TEST_CASE(coder_test, Implementations);
TYPED_TEST(coder_test, sinlge_encode_decode)
{
static_assert(sdsl::util::is_regular<TypeParam>::value, "Type is not regular");
uint8_t offset = 0;
uint64_t buf[8] = {0};
uint64_t* pb = buf;
for (size_t i=0; i<this->m_data.size(); ++i) {
TypeParam::encode(this->m_data[i], pb, offset);
pb = buf;
offset = 0;
uint64_t x = TypeParam::template decode<false,false,uint64_t*>(buf, 0, 1);
ASSERT_EQ(this->m_data[i], x);
}
}
TYPED_TEST(coder_test, all_encode_decode)
{
int_vector<> tmp,data;
TypeParam::encode(this->m_data, tmp);
TypeParam::decode(tmp, data);
ASSERT_EQ(this->m_data.size(), data.size());
for (size_t i=0; i<this->m_data.size(); ++i) {
ASSERT_EQ(this->m_data[i], data[i]);
}
}
TYPED_TEST(coder_test, decode_prefix_sum)
{
int_vector<> tmp;
TypeParam::encode(this->m_data, tmp);
uint64_t start = 0;
const uint64_t sample = 32;
for (size_t i=0; i<this->m_data.size(); ++i) {
uint64_t sum = 0;
uint64_t lstart = start;
if (i%sample==0) {
for (size_t j=1; j<=sample and i+j-1<this->m_data.size(); ++j) {
sum += this->m_data[i+j-1];
ASSERT_EQ(sum, TypeParam::decode_prefix_sum(tmp.data(), lstart, j));
uint64_t x = TypeParam::template decode<true,false,uint64_t*>(tmp.data(), lstart, j);
ASSERT_EQ(sum, x);
}
}
start += TypeParam::encoding_length(this->m_data[i]);
}
}
} // namespace
int main(int argc, char** argv)
{
::testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
|
