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
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
# Copyright (C) 2004 - 2006 Aaron Bentley, Canonical Ltd
# <aaron.bentley@utoronto.ca>
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import unittest
import os.path
from bzrlib.iterablefile import IterableFile
from bzrlib.patches import (MalformedLine,
MalformedHunkHeader,
MalformedPatchHeader,
ContextLine,
InsertLine,
RemoveLine,
difference_index,
get_patch_names,
hunk_from_header,
iter_patched,
parse_line,
parse_patch,
parse_patches)
class PatchesTester(unittest.TestCase):
def datafile(self, filename):
data_path = os.path.join(os.path.dirname(__file__),
"test_patches_data", filename)
return file(data_path, "rb")
def testValidPatchHeader(self):
"""Parse a valid patch header"""
lines = "--- orig/commands.py\n+++ mod/dommands.py\n".split('\n')
(orig, mod) = get_patch_names(lines.__iter__())
assert(orig == "orig/commands.py")
assert(mod == "mod/dommands.py")
def testInvalidPatchHeader(self):
"""Parse an invalid patch header"""
lines = "-- orig/commands.py\n+++ mod/dommands.py".split('\n')
self.assertRaises(MalformedPatchHeader, get_patch_names,
lines.__iter__())
def testValidHunkHeader(self):
"""Parse a valid hunk header"""
header = "@@ -34,11 +50,6 @@\n"
hunk = hunk_from_header(header);
assert (hunk.orig_pos == 34)
assert (hunk.orig_range == 11)
assert (hunk.mod_pos == 50)
assert (hunk.mod_range == 6)
assert (str(hunk) == header)
def testValidHunkHeader2(self):
"""Parse a tricky, valid hunk header"""
header = "@@ -1 +0,0 @@\n"
hunk = hunk_from_header(header);
assert (hunk.orig_pos == 1)
assert (hunk.orig_range == 1)
assert (hunk.mod_pos == 0)
assert (hunk.mod_range == 0)
assert (str(hunk) == header)
def testPDiff(self):
"""Parse a hunk header produced by diff -p"""
header = "@@ -407,7 +292,7 @@ bzr 0.18rc1 2007-07-10\n"
hunk = hunk_from_header(header)
self.assertEqual('bzr 0.18rc1 2007-07-10', hunk.tail)
self.assertEqual(header, str(hunk))
def makeMalformed(self, header):
self.assertRaises(MalformedHunkHeader, hunk_from_header, header)
def testInvalidHeader(self):
"""Parse an invalid hunk header"""
self.makeMalformed(" -34,11 +50,6 \n")
self.makeMalformed("@@ +50,6 -34,11 @@\n")
self.makeMalformed("@@ -34,11 +50,6 @@")
self.makeMalformed("@@ -34.5,11 +50,6 @@\n")
self.makeMalformed("@@-34,11 +50,6@@\n")
self.makeMalformed("@@ 34,11 50,6 @@\n")
self.makeMalformed("@@ -34,11 @@\n")
self.makeMalformed("@@ -34,11 +50,6.5 @@\n")
self.makeMalformed("@@ -34,11 +50,-6 @@\n")
def lineThing(self,text, type):
line = parse_line(text)
assert(isinstance(line, type))
assert(str(line)==text)
def makeMalformedLine(self, text):
self.assertRaises(MalformedLine, parse_line, text)
def testValidLine(self):
"""Parse a valid hunk line"""
self.lineThing(" hello\n", ContextLine)
self.lineThing("+hello\n", InsertLine)
self.lineThing("-hello\n", RemoveLine)
def testMalformedLine(self):
"""Parse invalid valid hunk lines"""
self.makeMalformedLine("hello\n")
def compare_parsed(self, patchtext):
lines = patchtext.splitlines(True)
patch = parse_patch(lines.__iter__())
pstr = str(patch)
i = difference_index(patchtext, pstr)
if i is not None:
print "%i: \"%s\" != \"%s\"" % (i, patchtext[i], pstr[i])
self.assertEqual (patchtext, str(patch))
def testAll(self):
"""Test parsing a whole patch"""
patchtext = self.datafile("patchtext.patch").read()
self.compare_parsed(patchtext)
def testInit(self):
"""Handle patches missing half the position, range tuple"""
patchtext = \
"""--- orig/__vavg__.cl
+++ mod/__vavg__.cl
@@ -1 +1,2 @@
__qbpsbezng__ = "erfgehpgherqgrkg ra"
+__qbp__ = Na nygreangr Nepu pbzznaqyvar vagresnpr
"""
self.compare_parsed(patchtext)
def testLineLookup(self):
import sys
"""Make sure we can accurately look up mod line from orig"""
patch = parse_patch(self.datafile("diff"))
orig = list(self.datafile("orig"))
mod = list(self.datafile("mod"))
removals = []
for i in range(len(orig)):
mod_pos = patch.pos_in_mod(i)
if mod_pos is None:
removals.append(orig[i])
continue
assert(mod[mod_pos]==orig[i])
rem_iter = removals.__iter__()
for hunk in patch.hunks:
for line in hunk.lines:
if isinstance(line, RemoveLine):
next = rem_iter.next()
if line.contents != next:
sys.stdout.write(" orig:%spatch:%s" % (next,
line.contents))
assert(line.contents == next)
self.assertRaises(StopIteration, rem_iter.next)
def testPatching(self):
"""Test a few patch files, and make sure they work."""
files = [
('diff-2', 'orig-2', 'mod-2'),
('diff-3', 'orig-3', 'mod-3'),
('diff-4', 'orig-4', 'mod-4'),
('diff-5', 'orig-5', 'mod-5'),
('diff-6', 'orig-6', 'mod-6'),
]
for diff, orig, mod in files:
patch = self.datafile(diff)
orig_lines = list(self.datafile(orig))
mod_lines = list(self.datafile(mod))
patched_file = IterableFile(iter_patched(orig_lines, patch))
lines = []
count = 0
for patch_line in patched_file:
self.assertEqual(patch_line, mod_lines[count])
count += 1
self.assertEqual(count, len(mod_lines))
def testFirstLineRenumber(self):
"""Make sure we handle lines at the beginning of the hunk"""
patch = parse_patch(self.datafile("insert_top.patch"))
assert (patch.pos_in_mod(0)==1)
def testParsePatches(self):
"""Make sure file names can be extracted from tricky unified diffs"""
patchtext = \
"""--- orig-7
+++ mod-7
@@ -1,10 +1,10 @@
-- a
--- b
+++ c
xx d
xx e
++ f
-++ g
+-- h
xx i
xx j
-- k
--- l
+++ m
--- orig-8
+++ mod-8
@@ -1 +1 @@
--- A
+++ B
@@ -1 +1 @@
--- C
+++ D
"""
filenames = [('orig-7', 'mod-7'),
('orig-8', 'mod-8')]
patches = parse_patches(patchtext.splitlines(True))
patch_files = []
for patch in patches:
patch_files.append((patch.oldname, patch.newname))
assert (patch_files == filenames)
def test():
patchesTestSuite = unittest.makeSuite(PatchesTester,'test')
runner = unittest.TextTestRunner(verbosity=0)
return runner.run(patchesTestSuite)
if __name__ == "__main__":
test()
|