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# Copyright (C) 2006-2012, 2016 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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"""Black-box tests for bzr diff."""
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from bzrlib.diff import (
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format_registry as diff_format_registry,
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from bzrlib.tests import (
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def subst_dates(string):
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"""Replace date strings with constant values."""
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return re.sub(r'\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} [-\+]\d{4}',
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'YYYY-MM-DD HH:MM:SS +ZZZZ', string)
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class DiffBase(tests.TestCaseWithTransport):
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"""Base class with common setup method"""
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def make_example_branch(self):
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tree = self.make_branch_and_tree('.')
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self.build_tree_contents([
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('goodbye', 'baz\n')])
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class TestDiff(DiffBase):
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tree = self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!')])
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tree.commit(message='fixing hello')
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output = self.run_bzr('diff -r 2..3', retcode=1)[0]
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self.assertTrue('\n+hello world!' in output)
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output = self.run_bzr('diff -c 3', retcode=1)[0]
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self.assertTrue('\n+hello world!' in output)
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output = self.run_bzr('diff -r last:3..last:1', retcode=1)[0]
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self.assertTrue('\n+baz' in output)
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output = self.run_bzr('diff -c last:2', retcode=1)[0]
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self.assertTrue('\n+baz' in output)
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self.build_tree(['moo'])
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def test_diff_prefix(self):
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"""diff --prefix appends to filenames in output"""
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self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!\n')])
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out, err = self.run_bzr('diff --prefix old/:new/', retcode=1)
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self.assertEqual(err, '')
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self.assertEqualDiff(subst_dates(out), '''\
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=== modified file 'hello'
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--- old/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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+++ new/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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def test_diff_illegal_prefix_value(self):
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# There was an error in error reporting for this option
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out, err = self.run_bzr('diff --prefix old/', retcode=3)
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self.assertContainsRe(err,
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'--prefix expects two values separated by a colon')
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def test_diff_p1(self):
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"""diff -p1 produces lkml-style diffs"""
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self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!\n')])
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out, err = self.run_bzr('diff -p1', retcode=1)
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self.assertEqual(err, '')
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self.assertEqualDiff(subst_dates(out), '''\
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=== modified file 'hello'
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--- old/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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+++ new/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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def test_diff_p0(self):
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"""diff -p0 produces diffs with no prefix"""
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self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!\n')])
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out, err = self.run_bzr('diff -p0', retcode=1)
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self.assertEqual(err, '')
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self.assertEqualDiff(subst_dates(out), '''\
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=== modified file 'hello'
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--- hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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+++ hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
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def test_diff_nonexistent(self):
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# Get an error from a file that does not exist at all
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self.make_example_branch()
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out, err = self.run_bzr('diff does-not-exist', retcode=3,
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error_regexes=('not versioned.*does-not-exist',))
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def test_diff_illegal_revision_specifiers(self):
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out, err = self.run_bzr('diff -r 1..23..123', retcode=3,
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error_regexes=('one or two revision specifiers',))
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def test_diff_using_and_format(self):
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out, err = self.run_bzr('diff --format=default --using=mydi', retcode=3,
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error_regexes=('are mutually exclusive',))
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def test_diff_nonexistent_revision(self):
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out, err = self.run_bzr('diff -r 123', retcode=3,
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error_regexes=("Requested revision: '123' does not "
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"exist in branch:",))
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def test_diff_nonexistent_dotted_revision(self):
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out, err = self.run_bzr('diff -r 1.1', retcode=3)
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self.assertContainsRe(err,
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"Requested revision: '1.1' does not exist in branch:")
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def test_diff_nonexistent_dotted_revision_change(self):
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out, err = self.run_bzr('diff -c 1.1', retcode=3)
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self.assertContainsRe(err,
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"Requested revision: '1.1' does not exist in branch:")
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def test_diff_unversioned(self):
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# Get an error when diffing a non-versioned file.
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self.make_example_branch()
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self.build_tree(['unversioned-file'])
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out, err = self.run_bzr('diff unversioned-file', retcode=3)
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self.assertContainsRe(err, 'not versioned.*unversioned-file')
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# TODO: What should diff say for a file deleted in working tree?
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def example_branches(self):
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branch1_tree = self.make_branch_and_tree('branch1')
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self.build_tree(['branch1/file'], line_endings='binary')
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self.build_tree(['branch1/file2'], line_endings='binary')
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branch1_tree.add('file')
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branch1_tree.add('file2')
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branch1_tree.commit(message='add file and file2')
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branch2_tree = branch1_tree.bzrdir.sprout('branch2').open_workingtree()
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self.build_tree_contents([('branch2/file', 'new content\n')])
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branch2_tree.commit(message='update file')
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return branch1_tree, branch2_tree
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def check_b2_vs_b1(self, cmd):
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# Compare branch2 vs branch1 using cmd and check the result
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out, err = self.run_bzr(cmd, retcode=1)
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self.assertEqual('', err)
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self.assertEqual("=== modified file 'file'\n"
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"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"+contents of branch1/file\n"
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"\n", subst_dates(out))
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def check_b1_vs_b2(self, cmd):
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# Compare branch1 vs branch2 using cmd and check the result
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out, err = self.run_bzr(cmd, retcode=1)
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self.assertEqual('', err)
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self.assertEqualDiff("=== modified file 'file'\n"
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"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"-contents of branch1/file\n"
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"\n", subst_dates(out))
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def check_no_diffs(self, cmd):
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# Check that running cmd returns an empty diff
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out, err = self.run_bzr(cmd, retcode=0)
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self.assertEqual('', err)
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self.assertEqual('', out)
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def test_diff_branches(self):
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self.example_branches()
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# should open branch1 and diff against branch2,
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self.check_b2_vs_b1('diff -r branch:branch2 branch1')
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# Compare two working trees using various syntax forms
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self.check_b2_vs_b1('diff --old branch2 --new branch1')
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self.check_b2_vs_b1('diff --old branch2 branch1')
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self.check_b2_vs_b1('diff branch2 --new branch1')
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# Test with a selected file that was changed
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self.check_b2_vs_b1('diff --old branch2 --new branch1 file')
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self.check_b2_vs_b1('diff --old branch2 branch1/file')
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self.check_b2_vs_b1('diff branch2/file --new branch1')
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# Test with a selected file that was not changed
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self.check_no_diffs('diff --old branch2 --new branch1 file2')
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self.check_no_diffs('diff --old branch2 branch1/file2')
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self.check_no_diffs('diff branch2/file2 --new branch1')
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def test_diff_branches_no_working_trees(self):
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branch1_tree, branch2_tree = self.example_branches()
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# Compare a working tree to a branch without a WT
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dir1 = branch1_tree.bzrdir
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dir1.destroy_workingtree()
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self.assertFalse(dir1.has_workingtree())
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self.check_b2_vs_b1('diff --old branch2 --new branch1')
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self.check_b2_vs_b1('diff --old branch2 branch1')
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self.check_b2_vs_b1('diff branch2 --new branch1')
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# Compare a branch without a WT to one with a WT
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self.check_b1_vs_b2('diff --old branch1 --new branch2')
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self.check_b1_vs_b2('diff --old branch1 branch2')
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self.check_b1_vs_b2('diff branch1 --new branch2')
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# Compare a branch with a WT against another without a WT
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dir2 = branch2_tree.bzrdir
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dir2.destroy_workingtree()
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self.assertFalse(dir2.has_workingtree())
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self.check_b1_vs_b2('diff --old branch1 --new branch2')
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self.check_b1_vs_b2('diff --old branch1 branch2')
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self.check_b1_vs_b2('diff branch1 --new branch2')
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def test_diff_revno_branches(self):
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self.example_branches()
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branch2_tree = workingtree.WorkingTree.open_containing('branch2')[0]
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self.build_tree_contents([('branch2/file', 'even newer content')])
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branch2_tree.commit(message='update file once more')
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out, err = self.run_bzr('diff -r revno:1:branch2..revno:1:branch1',
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self.assertEqual('', err)
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self.assertEqual('', out)
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out, err = self.run_bzr('diff -r revno:2:branch2..revno:1:branch1',
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self.assertEqual('', err)
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self.assertEqualDiff("=== modified file 'file'\n"
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"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
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"+contents of branch1/file\n"
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"\n", subst_dates(out))
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def example_branch2(self):
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branch1_tree = self.make_branch_and_tree('branch1')
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self.build_tree_contents([('branch1/file1', 'original line\n')])
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branch1_tree.add('file1')
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branch1_tree.commit(message='first commit')
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self.build_tree_contents([('branch1/file1', 'repo line\n')])
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branch1_tree.commit(message='second commit')
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def test_diff_to_working_tree(self):
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self.example_branch2()
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self.build_tree_contents([('branch1/file1', 'new line')])
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output = self.run_bzr('diff -r 1.. branch1', retcode=1)
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self.assertContainsRe(output[0], '\n\\-original line\n\\+new line\n')
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def test_diff_to_working_tree_in_subdir(self):
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self.example_branch2()
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self.build_tree_contents([('branch1/file1', 'new line')])
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os.mkdir('branch1/dir1')
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output = self.run_bzr('diff -r 1..', retcode=1,
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working_dir='branch1/dir1')
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self.assertContainsRe(output[0], '\n\\-original line\n\\+new line\n')
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def test_diff_across_rename(self):
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"""The working tree path should always be considered for diffing"""
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tree = self.make_example_branch()
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self.run_bzr('diff -r 0..1 hello', retcode=1)
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tree.rename_one('hello', 'hello1')
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self.run_bzr('diff hello1', retcode=1)
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self.run_bzr('diff -r 0..1 hello1', retcode=1)
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def test_diff_to_branch_no_working_tree(self):
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branch1_tree = self.example_branch2()
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dir1 = branch1_tree.bzrdir
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dir1.destroy_workingtree()
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self.assertFalse(dir1.has_workingtree())
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output = self.run_bzr('diff -r 1.. branch1', retcode=1)
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self.assertContainsRe(output[0], '\n\\-original line\n\\+repo line\n')
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def test_custom_format(self):
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class BooDiffTree(DiffTree):
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def show_diff(self, specific_files, extra_trees=None):
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self.to_file.write("BOO!\n")
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return super(BooDiffTree, self).show_diff(specific_files,
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diff_format_registry.register("boo", BooDiffTree, "Scary diff format")
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self.addCleanup(diff_format_registry.remove, "boo")
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self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!\n')])
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output = self.run_bzr('diff --format=boo', retcode=1)
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self.assertTrue("BOO!" in output[0])
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output = self.run_bzr('diff -Fboo', retcode=1)
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self.assertTrue("BOO!" in output[0])
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class TestCheckoutDiff(TestDiff):
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def make_example_branch(self):
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tree = super(TestCheckoutDiff, self).make_example_branch()
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tree = tree.branch.create_checkout('checkout')
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def example_branch2(self):
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tree = super(TestCheckoutDiff, self).example_branch2()
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os.mkdir('checkouts')
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tree = tree.branch.create_checkout('checkouts/branch1')
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os.chdir('checkouts')
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def example_branches(self):
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branch1_tree, branch2_tree = super(TestCheckoutDiff,
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self).example_branches()
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os.mkdir('checkouts')
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branch1_tree = branch1_tree.branch.create_checkout('checkouts/branch1')
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branch2_tree = branch2_tree.branch.create_checkout('checkouts/branch2')
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os.chdir('checkouts')
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return branch1_tree, branch2_tree
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class TestDiffLabels(DiffBase):
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def test_diff_label_removed(self):
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tree = super(TestDiffLabels, self).make_example_branch()
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tree.remove('hello', keep_files=False)
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diff = self.run_bzr('diff', retcode=1)
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self.assertTrue("=== removed file 'hello'" in diff[0])
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def test_diff_label_added(self):
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tree = super(TestDiffLabels, self).make_example_branch()
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self.build_tree_contents([('barbar', 'barbar')])
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diff = self.run_bzr('diff', retcode=1)
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self.assertTrue("=== added file 'barbar'" in diff[0])
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def test_diff_label_modified(self):
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super(TestDiffLabels, self).make_example_branch()
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self.build_tree_contents([('hello', 'barbar')])
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diff = self.run_bzr('diff', retcode=1)
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self.assertTrue("=== modified file 'hello'" in diff[0])
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def test_diff_label_renamed(self):
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tree = super(TestDiffLabels, self).make_example_branch()
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tree.rename_one('hello', 'gruezi')
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diff = self.run_bzr('diff', retcode=1)
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self.assertTrue("=== renamed file 'hello' => 'gruezi'" in diff[0])
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class TestExternalDiff(DiffBase):
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def test_external_diff(self):
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"""Test that we can spawn an external diff process"""
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self.disable_missing_extensions_warning()
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# We have to use run_bzr_subprocess, because we need to
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# test writing directly to stdout, (there was a bug in
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# subprocess.py that we had to workaround).
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# However, if 'diff' may not be available
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self.make_example_branch()
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out, err = self.run_bzr_subprocess(
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'diff -Oprogress_bar=none -r 1 --diff-options -ub',
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universal_newlines=True,
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if 'Diff is not installed on this machine' in err:
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raise tests.TestSkipped("No external 'diff' is available")
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self.assertEqual('', err)
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# We have to skip the stuff in the middle, because it depends
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self.assertStartsWith(out, "=== added file 'goodbye'\n"
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"--- goodbye\t1970-01-01 00:00:00 +0000\n"
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self.assertEndsWith(out, "\n@@ -0,0 +1 @@\n"
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def test_external_diff_options_and_using(self):
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"""Test that the options are passed correctly to an external diff process"""
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self.requireFeature(features.diff_feature)
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self.make_example_branch()
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self.build_tree_contents([('hello', 'Foo\n')])
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out, err = self.run_bzr('diff --diff-options -i --using diff',
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self.assertEqual("=== modified file 'hello'\n", out)
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self.assertEqual('', err)
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class TestDiffOutput(DiffBase):
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def test_diff_output(self):
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# check that output doesn't mangle line-endings
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self.make_example_branch()
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self.build_tree_contents([('hello', 'hello world!\n')])
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output = self.run_bzr_subprocess('diff', retcode=1)[0]
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self.assertTrue('\n+hello world!\n' in output)
added
removed
bzrlib/tests/blackbox/test_diff.py
