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
|
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
# file, You can obtain one at http://mozilla.org/MPL/2.0/.
from unittest import TextTestRunner as _TestRunner, TestResult as _TestResult
import unittest
import inspect
from StringIO import StringIO
import os
'''Helper to make python unit tests report the way that the Mozilla
unit test infrastructure expects tests to report.
Usage:
import unittest
import mozunit
if __name__ == '__main__':
mozunit.main()
'''
class _MozTestResult(_TestResult):
def __init__(self, stream, descriptions):
_TestResult.__init__(self)
self.stream = stream
self.descriptions = descriptions
def getDescription(self, test):
if self.descriptions:
return test.shortDescription() or str(test)
else:
return str(test)
def addSuccess(self, test):
_TestResult.addSuccess(self, test)
filename = inspect.getfile(test.__class__)
testname = test._testMethodName
self.stream.writeln("TEST-PASS | %s | %s" % (filename, testname))
def addError(self, test, err):
_TestResult.addError(self, test, err)
self.printFail(test, err)
def addFailure(self, test, err):
_TestResult.addFailure(self, test, err)
self.printFail(test,err)
def printFail(self, test, err):
exctype, value, tb = err
# Skip test runner traceback levels
while tb and self._is_relevant_tb_level(tb):
tb = tb.tb_next
if not tb:
self.stream.writeln("TEST-UNEXPECTED-FAIL | NO TRACEBACK |")
_f, _ln, _t = inspect.getframeinfo(tb)[:3]
self.stream.writeln("TEST-UNEXPECTED-FAIL | %s | line %d, %s: %s" %
(_f, _ln, _t, value.message))
def printErrorList(self):
for test, err in self.errors:
self.stream.writeln("ERROR: %s" % self.getDescription(test))
self.stream.writeln("%s" % err)
class MozTestRunner(_TestRunner):
def _makeResult(self):
return _MozTestResult(self.stream, self.descriptions)
def run(self, test):
result = self._makeResult()
test(result)
result.printErrorList()
return result
class MockedFile(StringIO):
def __init__(self, context, filename, content = ''):
self.context = context
self.name = filename
StringIO.__init__(self, content)
def close(self):
self.context.files[self.name] = self.getvalue()
StringIO.close(self)
def __enter__(self):
return self
def __exit__(self, type, value, traceback):
self.close()
class MockedOpen(object):
'''
Context manager diverting the open builtin such that opening files
can open "virtual" file instances given when creating a MockedOpen.
with MockedOpen({'foo': 'foo', 'bar': 'bar'}):
f = open('foo', 'r')
will thus open the virtual file instance for the file 'foo' to f.
MockedOpen also masks writes, so that creating or replacing files
doesn't touch the file system, while subsequently opening the file
will return the recorded content.
with MockedOpen():
f = open('foo', 'w')
f.write('foo')
self.assertRaises(Exception,f.open('foo', 'r'))
'''
def __init__(self, files = {}):
self.files = {}
for name, content in files.iteritems():
self.files[os.path.abspath(name)] = content
def __call__(self, name, mode = 'r'):
absname = os.path.abspath(name)
if 'w' in mode:
file = MockedFile(self, absname)
elif absname in self.files:
file = MockedFile(self, absname, self.files[absname])
elif 'a' in mode:
file = MockedFile(self, absname, self.open(name, 'r').read())
else:
file = self.open(name, mode)
if 'a' in mode:
file.seek(0, os.SEEK_END)
return file
def __enter__(self):
import __builtin__
self.open = __builtin__.open
__builtin__.open = self
def __exit__(self, type, value, traceback):
import __builtin__
__builtin__.open = self.open
def main(*args):
unittest.main(testRunner=MozTestRunner(),*args)
|