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# Copyright (C) 2005-2010 Aaron Bentley, Canonical Ltd
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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from breezy.tests import TestCase
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from breezy.iterablefile import IterableFile
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from breezy.patches import (MalformedLine,
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iter_patched_from_hunks,
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class PatchesTester(TestCase):
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def datafile(self, filename):
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data_path = os.path.join(os.path.dirname(__file__),
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"test_patches_data", filename)
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return file(data_path, "rb")
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def data_lines(self, filename):
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datafile = self.datafile(filename)
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return datafile.readlines()
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def test_parse_patches_leading_noise(self):
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# https://bugs.launchpad.net/bzr/+bug/502076
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# https://code.launchpad.net/~toshio/bzr/allow-dirty-patches/+merge/18854
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lines = ["diff -pruN commands.py",
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"--- orig/commands.py",
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"+++ mod/dommands.py"]
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bits = parse_patches(iter(lines), allow_dirty=True)
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def test_preserve_dirty_head(self):
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"""Parse a patch containing a dirty header, and preserve lines"""
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lines = ["=== added directory 'foo/bar'\n",
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"=== modified file 'orig/commands.py'\n",
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"--- orig/commands.py\n",
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"+++ mod/dommands.py\n",
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"=== modified file 'orig/another.py'\n",
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"--- orig/another.py\n",
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"+++ mod/another.py\n"]
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patches = parse_patches(
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lines.__iter__(), allow_dirty=True, keep_dirty=True)
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self.assertLength(2, patches)
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self.assertEqual(patches[0]['dirty_head'],
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["=== added directory 'foo/bar'\n",
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"=== modified file 'orig/commands.py'\n"])
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self.assertEqual(patches[0]['patch'].get_header().splitlines(True),
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["--- orig/commands.py\n", "+++ mod/dommands.py\n"])
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self.assertEqual(patches[1]['dirty_head'],
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["=== modified file 'orig/another.py'\n"])
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self.assertEqual(patches[1]['patch'].get_header().splitlines(True),
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["--- orig/another.py\n", "+++ mod/another.py\n"])
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def testValidPatchHeader(self):
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"""Parse a valid patch header"""
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lines = "--- orig/commands.py\n+++ mod/dommands.py\n".split('\n')
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(orig, mod) = get_patch_names(lines.__iter__())
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self.assertEqual(orig, "orig/commands.py")
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self.assertEqual(mod, "mod/dommands.py")
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def testInvalidPatchHeader(self):
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"""Parse an invalid patch header"""
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lines = "-- orig/commands.py\n+++ mod/dommands.py".split('\n')
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self.assertRaises(MalformedPatchHeader, get_patch_names,
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def testValidHunkHeader(self):
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"""Parse a valid hunk header"""
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header = "@@ -34,11 +50,6 @@\n"
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hunk = hunk_from_header(header)
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self.assertEqual(hunk.orig_pos, 34)
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self.assertEqual(hunk.orig_range, 11)
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self.assertEqual(hunk.mod_pos, 50)
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self.assertEqual(hunk.mod_range, 6)
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self.assertEqual(str(hunk), header)
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def testValidHunkHeader2(self):
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"""Parse a tricky, valid hunk header"""
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header = "@@ -1 +0,0 @@\n"
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hunk = hunk_from_header(header)
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self.assertEqual(hunk.orig_pos, 1)
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self.assertEqual(hunk.orig_range, 1)
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self.assertEqual(hunk.mod_pos, 0)
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self.assertEqual(hunk.mod_range, 0)
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self.assertEqual(str(hunk), header)
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"""Parse a hunk header produced by diff -p"""
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header = "@@ -407,7 +292,7 @@ bzr 0.18rc1 2007-07-10\n"
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hunk = hunk_from_header(header)
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self.assertEqual('bzr 0.18rc1 2007-07-10', hunk.tail)
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self.assertEqual(header, str(hunk))
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def makeMalformed(self, header):
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self.assertRaises(MalformedHunkHeader, hunk_from_header, header)
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def testInvalidHeader(self):
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"""Parse an invalid hunk header"""
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self.makeMalformed(" -34,11 +50,6 \n")
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self.makeMalformed("@@ +50,6 -34,11 @@\n")
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self.makeMalformed("@@ -34,11 +50,6 @@")
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self.makeMalformed("@@ -34.5,11 +50,6 @@\n")
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self.makeMalformed("@@-34,11 +50,6@@\n")
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self.makeMalformed("@@ 34,11 50,6 @@\n")
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self.makeMalformed("@@ -34,11 @@\n")
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self.makeMalformed("@@ -34,11 +50,6.5 @@\n")
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self.makeMalformed("@@ -34,11 +50,-6 @@\n")
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def lineThing(self, text, type):
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line = parse_line(text)
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self.assertIsInstance(line, type)
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self.assertEqual(str(line), text)
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def makeMalformedLine(self, text):
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self.assertRaises(MalformedLine, parse_line, text)
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def testValidLine(self):
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"""Parse a valid hunk line"""
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self.lineThing(" hello\n", ContextLine)
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self.lineThing("+hello\n", InsertLine)
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self.lineThing("-hello\n", RemoveLine)
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def testMalformedLine(self):
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"""Parse invalid valid hunk lines"""
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self.makeMalformedLine("hello\n")
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def testMalformedLineNO_NL(self):
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"""Parse invalid '\\ No newline at end of file' in hunk lines"""
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self.makeMalformedLine(NO_NL)
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def compare_parsed(self, patchtext):
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lines = patchtext.splitlines(True)
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patch = parse_patch(lines.__iter__())
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i = difference_index(patchtext, pstr)
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print("%i: \"%s\" != \"%s\"" % (i, patchtext[i], pstr[i]))
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self.assertEqual(patchtext, str(patch))
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"""Test parsing a whole patch"""
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patchtext = self.datafile("patchtext.patch").read()
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self.compare_parsed(patchtext)
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def test_parse_binary(self):
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"""Test parsing a whole patch"""
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patches = parse_patches(self.data_lines("binary.patch"))
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self.assertIs(BinaryPatch, patches[0].__class__)
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self.assertIs(Patch, patches[1].__class__)
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self.assertContainsRe(patches[0].oldname, '^bar\t')
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self.assertContainsRe(patches[0].newname, '^qux\t')
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self.assertContainsRe(str(patches[0]),
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'Binary files bar\t.* and qux\t.* differ\n')
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def test_parse_binary_after_normal(self):
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patches = parse_patches(self.data_lines("binary-after-normal.patch"))
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self.assertIs(BinaryPatch, patches[1].__class__)
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self.assertIs(Patch, patches[0].__class__)
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self.assertContainsRe(patches[1].oldname, '^bar\t')
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self.assertContainsRe(patches[1].newname, '^qux\t')
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self.assertContainsRe(str(patches[1]),
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'Binary files bar\t.* and qux\t.* differ\n')
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def test_roundtrip_binary(self):
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patchtext = ''.join(self.data_lines("binary.patch"))
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patches = parse_patches(patchtext.splitlines(True))
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self.assertEqual(patchtext, ''.join(str(p) for p in patches))
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"""Handle patches missing half the position, range tuple"""
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"""--- orig/__vavg__.cl
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__qbpsbezng__ = "erfgehpgherqgrkg ra"
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+__qbp__ = Na nygreangr Nepu pbzznaqyvar vagresnpr
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self.compare_parsed(patchtext)
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def testLineLookup(self):
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"""Make sure we can accurately look up mod line from orig"""
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patch = parse_patch(self.datafile("diff"))
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orig = list(self.datafile("orig"))
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mod = list(self.datafile("mod"))
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for i in range(len(orig)):
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mod_pos = patch.pos_in_mod(i)
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removals.append(orig[i])
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self.assertEqual(mod[mod_pos], orig[i])
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rem_iter = removals.__iter__()
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for hunk in patch.hunks:
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for line in hunk.lines:
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if isinstance(line, RemoveLine):
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self.assertEqual(line.contents, next(rem_iter))
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self.assertRaises(StopIteration, next, rem_iter)
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def testPatching(self):
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"""Test a few patch files, and make sure they work."""
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('diff-2', 'orig-2', 'mod-2'),
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('diff-3', 'orig-3', 'mod-3'),
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('diff-4', 'orig-4', 'mod-4'),
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('diff-5', 'orig-5', 'mod-5'),
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('diff-6', 'orig-6', 'mod-6'),
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('diff-7', 'orig-7', 'mod-7'),
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for diff, orig, mod in files:
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patch = self.datafile(diff)
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orig_lines = list(self.datafile(orig))
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mod_lines = list(self.datafile(mod))
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patched_file = IterableFile(iter_patched(orig_lines, patch))
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for patch_line in patched_file:
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self.assertEqual(patch_line, mod_lines[count])
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self.assertEqual(count, len(mod_lines))
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def test_iter_patched_binary(self):
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binary_lines = self.data_lines('binary.patch')
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e = self.assertRaises(BinaryFiles, iter_patched, [], binary_lines)
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def test_iter_patched_from_hunks(self):
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"""Test a few patch files, and make sure they work."""
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('diff-2', 'orig-2', 'mod-2'),
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('diff-3', 'orig-3', 'mod-3'),
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('diff-4', 'orig-4', 'mod-4'),
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('diff-5', 'orig-5', 'mod-5'),
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('diff-6', 'orig-6', 'mod-6'),
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('diff-7', 'orig-7', 'mod-7'),
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for diff, orig, mod in files:
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parsed = parse_patch(self.datafile(diff))
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orig_lines = list(self.datafile(orig))
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mod_lines = list(self.datafile(mod))
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iter_patched = iter_patched_from_hunks(orig_lines, parsed.hunks)
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patched_file = IterableFile(iter_patched)
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for patch_line in patched_file:
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self.assertEqual(patch_line, mod_lines[count])
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self.assertEqual(count, len(mod_lines))
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def testFirstLineRenumber(self):
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"""Make sure we handle lines at the beginning of the hunk"""
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patch = parse_patch(self.datafile("insert_top.patch"))
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self.assertEqual(patch.pos_in_mod(0), 1)
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def testParsePatches(self):
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"""Make sure file names can be extracted from tricky unified diffs"""
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filenames = [('orig-7', 'mod-7'),
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patches = parse_patches(patchtext.splitlines(True))
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for patch in patches:
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patch_files.append((patch.oldname, patch.newname))
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self.assertEqual(patch_files, filenames)
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def testStatsValues(self):
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"""Test the added, removed and hunks values for stats_values."""
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patch = parse_patch(self.datafile("diff"))
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self.assertEqual((299, 407, 48), patch.stats_values())
added
removed
breezy/tests/test_patches.py
