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
|
"""
This module provides several helpers to perform user-friendly assertions in
testcases based on Python scripts.
"""
import re
import difflib
from drivers.alr import run_alr
def indent(text, prefix=' '):
"""
Return `text` indented using `prefix`.
"""
return '\n'.join(prefix + repr(line) for line in text.splitlines())
def pretty_diff(expected, actual):
diff = difflib.unified_diff(expected.splitlines(),
actual.splitlines(),
fromfile='expected',
tofile='actual')
return "\n".join(diff)
def assert_eq(expected, actual, label=None):
if expected != actual:
if isinstance(actual, str) and isinstance(expected, str):
diff = '\nDiff:\n' + pretty_diff(expected, actual)
else:
diff = ''
text = ['Unexpected {}:'.format(label or 'output'),
'Expecting:',
indent(str(expected)),
'But got:',
indent(str(actual))]
assert False, '\n'.join(text) + diff
def assert_match(expected_re, actual, label=None, flags=re.S):
if not re.match(expected_re, actual, flags=flags):
text = ['Unexpected {}'.format(label or 'output'),
'Expecting a match on:',
indent(expected_re),
'But got:',
indent(actual)]
assert False, '\n'.join(text)
def match_solution(regex, escape=False, whole=False):
"Check whether a regex matches the current solution"
p = run_alr("with", "--solve")
wrap = "" if whole else ".*"
assert_match(wrap +
(regex if not escape else re.escape(regex)) +
wrap,
p.out)
|
