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
|
import lz4.frame as lz4frame
import lz4
import re
def test_library_version_number():
v = lz4.library_version_number()
assert isinstance(v, int)
assert v > 10000
def test_library_version_string():
v = lz4.library_version_string()
assert isinstance(v, str)
assert v.count('.') == 2
r=re.compile(r'^[0-9]*\.[0-9]*\.[0-9]*$')
assert r.match(v) is not None
def test_create_compression_context():
context = lz4frame.create_compression_context()
assert context is not None
def test_create_decompression_context():
context = lz4frame.create_decompression_context()
assert context is not None
def test_reset_decompression_context_1():
if lz4.library_version_number() >= 10800:
context = lz4frame.create_decompression_context()
r = lz4frame.reset_decompression_context(context)
assert r is None
else:
pass
def test_reset_decompression_context_2():
if lz4.library_version_number() >= 10800:
c = lz4frame.compress(b'1234', return_bytearray=False)
context = lz4frame.create_decompression_context()
try:
# Simulate an error by passing junk to decompress
d = lz4frame.decompress_chunk(context, c[1:3])
except:
pass
r = lz4frame.reset_decompression_context(context)
assert r is None
# And confirm we can use the context after reset
d, bytes_read, eof = lz4frame.decompress_chunk(context, c)
assert d == b'1234'
assert bytes_read == len(c)
assert eof == True
else:
pass
def test_compress_return_type_1():
r = lz4frame.compress(b'', return_bytearray=False)
assert isinstance(r, bytes)
def test_compress_return_type_2():
r = lz4frame.compress(b'', return_bytearray=True)
assert isinstance(r, bytearray)
def test_decompress_return_type_1():
c = lz4frame.compress(b'', return_bytearray=False)
r = lz4frame.decompress(
c,
return_bytearray=False,
return_bytes_read=False
)
assert isinstance(r, bytes)
def test_decompress_return_type_2():
c = lz4frame.compress(b'', return_bytearray=False)
r = lz4frame.decompress(
c,
return_bytearray=True,
return_bytes_read=False
)
assert isinstance(r, bytearray)
def test_decompress_return_type_3():
c = lz4frame.compress(b'', return_bytearray=False)
r = lz4frame.decompress(
c,
return_bytearray=False,
return_bytes_read=True
)
assert isinstance(r, tuple)
assert isinstance(r[0], bytes)
assert isinstance(r[1], int)
def test_decompress_return_type_4():
c = lz4frame.compress(b'', return_bytearray=False)
r = lz4frame.decompress(
c,
return_bytearray=True,
return_bytes_read=True
)
assert isinstance(r, tuple)
assert isinstance(r[0], bytearray)
assert isinstance(r[1], int)
def test_decompress_chunk_return_type_1():
c = lz4frame.compress(b'', return_bytearray=False)
d = lz4frame.create_decompression_context()
r, b, e = lz4frame.decompress_chunk(
d,
c,
return_bytearray=False,
)
assert isinstance(r, bytes)
assert isinstance(b, int)
assert isinstance(e, bool)
def test_decompress_chunk_return_type_2():
c = lz4frame.compress(b'', return_bytearray=False)
d = lz4frame.create_decompression_context()
r, b, e = lz4frame.decompress_chunk(
d,
c,
return_bytearray=True,
)
assert isinstance(r, bytearray)
assert isinstance(b, int)
assert isinstance(e, bool)
def test_decompress_chunk_return_type_3():
c = lz4frame.compress(b'', return_bytearray=False)
d = lz4frame.create_decompression_context()
r = lz4frame.decompress_chunk(
d,
c,
return_bytearray=False,
)
assert isinstance(r, tuple)
assert isinstance(r[0], bytes)
assert isinstance(r[1], int)
assert isinstance(r[2], bool)
def test_decompress_chunk_return_type_4():
c = lz4frame.compress(b'', return_bytearray=False)
d = lz4frame.create_decompression_context()
r = lz4frame.decompress_chunk(
d,
c,
return_bytearray=True,
)
assert isinstance(r, tuple)
assert isinstance(r[0], bytearray)
assert isinstance(r[1], int)
assert isinstance(r[2], bool)
def test_block_size_constants():
assert lz4frame.BLOCKSIZE_DEFAULT == 0
assert lz4frame.BLOCKSIZE_MAX64KB == 4
assert lz4frame.BLOCKSIZE_MAX256KB == 5
assert lz4frame.BLOCKSIZE_MAX1MB == 6
assert lz4frame.BLOCKSIZE_MAX4MB == 7
|
