# Copyright (C) 2004 - 2006 Aaron Bentley, Canonical Ltd # # # 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) 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 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 test(): patchesTestSuite = unittest.makeSuite(PatchesTester,'test') runner = unittest.TextTestRunner(verbosity=0) return runner.run(patchesTestSuite) if __name__ == "__main__": test()