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
|
#!/usr/bin/env python3
import binascii
import csv
import os.path
import re
import struct
import subprocess
import sys
TEST = re.compile(r'[-0-9.Na]+$')
def read_numerics(f):
header = f.read(19)
if header != b'PGCOPY\n\xff\r\n\0\0\0\0\0\0\0\0\0':
raise Exception('Unexpected header')
results = []
while True:
(field_count,) = struct.unpack('>h', f.read(2))
if field_count == -1:
assert f.read() == b''
break
if field_count != 1:
raise Exception(f'Unexpected field count: {field_count!r}')
(field_size,) = struct.unpack('>i', f.read(4))
results.append(f.read(field_size))
return results
def main():
tests = []
with open(os.path.join(os.path.dirname(__file__), 'decimal.in'), 'r') as f:
for line in f:
if line.isspace() or line.startswith('#'):
continue
if not TEST.match(line):
raise ValueError(f'Invalid test: {line!r}')
tests.append(line.rstrip())
query = b'COPY (VALUES ' + b', '.join(b"(numeric '%s')" % (test.encode('ascii'),) for test in tests) + b') TO STDOUT (FORMAT binary)'
with subprocess.Popen(['psql', '--set=ON_ERROR_STOP=1'], stdin=subprocess.PIPE, stdout=subprocess.PIPE) as psql:
psql.stdin.write(query)
psql.stdin.close()
results = read_numerics(psql.stdout)
if psql.returncode != 0:
raise subprocess.CalledProcessError(psql.returncode, psql.args)
writer = csv.writer(sys.stdout, lineterminator='\n')
writer.writerow(('binary', 'expected'))
writer.writerows((binascii.hexlify(binary).decode('ascii'), expected) for binary, expected in zip(results, tests))
if __name__ == '__main__':
main()
|
