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# Copyright (C) 2006-2010 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
"""Black-box tests for bzr diff.
"""
import os
import re
from bzrlib import (
tests,
workingtree,
)
from bzrlib.diff import (
DiffTree,
format_registry as diff_format_registry,
)
def subst_dates(string):
"""Replace date strings with constant values."""
return re.sub(r'\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} [-\+]\d{4}',
'YYYY-MM-DD HH:MM:SS +ZZZZ', string)
class DiffBase(tests.TestCaseWithTransport):
"""Base class with common setup method"""
def make_example_branch(self):
tree = self.make_branch_and_tree('.')
self.build_tree_contents([
('hello', 'foo\n'),
('goodbye', 'baz\n')])
tree.add(['hello'])
tree.commit('setup')
tree.add(['goodbye'])
tree.commit('setup')
return tree
class TestDiff(DiffBase):
def test_diff(self):
tree = self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!')])
tree.commit(message='fixing hello')
output = self.run_bzr('diff -r 2..3', retcode=1)[0]
self.assert_('\n+hello world!' in output)
output = self.run_bzr('diff -c 3', retcode=1)[0]
self.assert_('\n+hello world!' in output)
output = self.run_bzr('diff -r last:3..last:1', retcode=1)[0]
self.assert_('\n+baz' in output)
output = self.run_bzr('diff -c last:2', retcode=1)[0]
self.assert_('\n+baz' in output)
self.build_tree(['moo'])
tree.add('moo')
os.unlink('moo')
self.run_bzr('diff')
def test_diff_prefix(self):
"""diff --prefix appends to filenames in output"""
self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!\n')])
out, err = self.run_bzr('diff --prefix old/:new/', retcode=1)
self.assertEquals(err, '')
self.assertEqualDiff(subst_dates(out), '''\
=== modified file 'hello'
--- old/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
+++ new/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
@@ -1,1 +1,1 @@
-foo
+hello world!
''')
def test_diff_illegal_prefix_value(self):
# There was an error in error reporting for this option
out, err = self.run_bzr('diff --prefix old/', retcode=3)
self.assertContainsRe(err,
'--prefix expects two values separated by a colon')
def test_diff_p1(self):
"""diff -p1 produces lkml-style diffs"""
self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!\n')])
out, err = self.run_bzr('diff -p1', retcode=1)
self.assertEquals(err, '')
self.assertEqualDiff(subst_dates(out), '''\
=== modified file 'hello'
--- old/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
+++ new/hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
@@ -1,1 +1,1 @@
-foo
+hello world!
''')
def test_diff_p0(self):
"""diff -p0 produces diffs with no prefix"""
self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!\n')])
out, err = self.run_bzr('diff -p0', retcode=1)
self.assertEquals(err, '')
self.assertEqualDiff(subst_dates(out), '''\
=== modified file 'hello'
--- hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
+++ hello\tYYYY-MM-DD HH:MM:SS +ZZZZ
@@ -1,1 +1,1 @@
-foo
+hello world!
''')
def test_diff_nonexistent(self):
# Get an error from a file that does not exist at all
# (Malone #3619)
self.make_example_branch()
out, err = self.run_bzr('diff does-not-exist', retcode=3,
error_regexes=('not versioned.*does-not-exist',))
def test_diff_illegal_revision_specifiers(self):
out, err = self.run_bzr('diff -r 1..23..123', retcode=3,
error_regexes=('one or two revision specifiers',))
def test_diff_using_and_format(self):
out, err = self.run_bzr('diff --format=default --using=mydi', retcode=3,
error_regexes=('are mutually exclusive',))
def test_diff_nonexistent_revision(self):
out, err = self.run_bzr('diff -r 123', retcode=3,
error_regexes=("Requested revision: '123' does not "
"exist in branch:",))
def test_diff_nonexistent_dotted_revision(self):
out, err = self.run_bzr('diff -r 1.1', retcode=3)
self.assertContainsRe(err,
"Requested revision: '1.1' does not exist in branch:")
def test_diff_nonexistent_dotted_revision_change(self):
out, err = self.run_bzr('diff -c 1.1', retcode=3)
self.assertContainsRe(err,
"Requested revision: '1.1' does not exist in branch:")
def test_diff_unversioned(self):
# Get an error when diffing a non-versioned file.
# (Malone #3619)
self.make_example_branch()
self.build_tree(['unversioned-file'])
out, err = self.run_bzr('diff unversioned-file', retcode=3)
self.assertContainsRe(err, 'not versioned.*unversioned-file')
# TODO: What should diff say for a file deleted in working tree?
def example_branches(self):
branch1_tree = self.make_branch_and_tree('branch1')
self.build_tree(['branch1/file'], line_endings='binary')
self.build_tree(['branch1/file2'], line_endings='binary')
branch1_tree.add('file')
branch1_tree.add('file2')
branch1_tree.commit(message='add file and file2')
branch2_tree = branch1_tree.bzrdir.sprout('branch2').open_workingtree()
self.build_tree_contents([('branch2/file', 'new content\n')])
branch2_tree.commit(message='update file')
return branch1_tree, branch2_tree
def check_b2_vs_b1(self, cmd):
# Compare branch2 vs branch1 using cmd and check the result
out, err = self.run_bzr(cmd, retcode=1)
self.assertEquals('', err)
self.assertEquals("=== modified file 'file'\n"
"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"@@ -1,1 +1,1 @@\n"
"-new content\n"
"+contents of branch1/file\n"
"\n", subst_dates(out))
def check_b1_vs_b2(self, cmd):
# Compare branch1 vs branch2 using cmd and check the result
out, err = self.run_bzr(cmd, retcode=1)
self.assertEquals('', err)
self.assertEqualDiff("=== modified file 'file'\n"
"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"@@ -1,1 +1,1 @@\n"
"-contents of branch1/file\n"
"+new content\n"
"\n", subst_dates(out))
def check_no_diffs(self, cmd):
# Check that running cmd returns an empty diff
out, err = self.run_bzr(cmd, retcode=0)
self.assertEquals('', err)
self.assertEquals('', out)
def test_diff_branches(self):
self.example_branches()
# should open branch1 and diff against branch2,
self.check_b2_vs_b1('diff -r branch:branch2 branch1')
# Compare two working trees using various syntax forms
self.check_b2_vs_b1('diff --old branch2 --new branch1')
self.check_b2_vs_b1('diff --old branch2 branch1')
self.check_b2_vs_b1('diff branch2 --new branch1')
# Test with a selected file that was changed
self.check_b2_vs_b1('diff --old branch2 --new branch1 file')
self.check_b2_vs_b1('diff --old branch2 branch1/file')
self.check_b2_vs_b1('diff branch2/file --new branch1')
# Test with a selected file that was not changed
self.check_no_diffs('diff --old branch2 --new branch1 file2')
self.check_no_diffs('diff --old branch2 branch1/file2')
self.check_no_diffs('diff branch2/file2 --new branch1')
def test_diff_branches_no_working_trees(self):
branch1_tree, branch2_tree = self.example_branches()
# Compare a working tree to a branch without a WT
dir1 = branch1_tree.bzrdir
dir1.destroy_workingtree()
self.assertFalse(dir1.has_workingtree())
self.check_b2_vs_b1('diff --old branch2 --new branch1')
self.check_b2_vs_b1('diff --old branch2 branch1')
self.check_b2_vs_b1('diff branch2 --new branch1')
# Compare a branch without a WT to one with a WT
self.check_b1_vs_b2('diff --old branch1 --new branch2')
self.check_b1_vs_b2('diff --old branch1 branch2')
self.check_b1_vs_b2('diff branch1 --new branch2')
# Compare a branch with a WT against another without a WT
dir2 = branch2_tree.bzrdir
dir2.destroy_workingtree()
self.assertFalse(dir2.has_workingtree())
self.check_b1_vs_b2('diff --old branch1 --new branch2')
self.check_b1_vs_b2('diff --old branch1 branch2')
self.check_b1_vs_b2('diff branch1 --new branch2')
def test_diff_revno_branches(self):
self.example_branches()
branch2_tree = workingtree.WorkingTree.open_containing('branch2')[0]
self.build_tree_contents([('branch2/file', 'even newer content')])
branch2_tree.commit(message='update file once more')
out, err = self.run_bzr('diff -r revno:1:branch2..revno:1:branch1',
)
self.assertEquals('', err)
self.assertEquals('', out)
out, err = self.run_bzr('diff -r revno:2:branch2..revno:1:branch1',
retcode=1)
self.assertEquals('', err)
self.assertEqualDiff("=== modified file 'file'\n"
"--- file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"+++ file\tYYYY-MM-DD HH:MM:SS +ZZZZ\n"
"@@ -1,1 +1,1 @@\n"
"-new content\n"
"+contents of branch1/file\n"
"\n", subst_dates(out))
def example_branch2(self):
branch1_tree = self.make_branch_and_tree('branch1')
self.build_tree_contents([('branch1/file1', 'original line\n')])
branch1_tree.add('file1')
branch1_tree.commit(message='first commit')
self.build_tree_contents([('branch1/file1', 'repo line\n')])
branch1_tree.commit(message='second commit')
return branch1_tree
def test_diff_to_working_tree(self):
self.example_branch2()
self.build_tree_contents([('branch1/file1', 'new line')])
output = self.run_bzr('diff -r 1.. branch1', retcode=1)
self.assertContainsRe(output[0], '\n\\-original line\n\\+new line\n')
def test_diff_to_working_tree_in_subdir(self):
self.example_branch2()
self.build_tree_contents([('branch1/file1', 'new line')])
os.mkdir('branch1/dir1')
os.chdir('branch1/dir1')
output = self.run_bzr('diff -r 1..', retcode=1)
self.assertContainsRe(output[0], '\n\\-original line\n\\+new line\n')
def test_diff_across_rename(self):
"""The working tree path should always be considered for diffing"""
tree = self.make_example_branch()
self.run_bzr('diff -r 0..1 hello', retcode=1)
tree.rename_one('hello', 'hello1')
self.run_bzr('diff hello1', retcode=1)
self.run_bzr('diff -r 0..1 hello1', retcode=1)
def test_diff_to_branch_no_working_tree(self):
branch1_tree = self.example_branch2()
dir1 = branch1_tree.bzrdir
dir1.destroy_workingtree()
self.assertFalse(dir1.has_workingtree())
output = self.run_bzr('diff -r 1.. branch1', retcode=1)
self.assertContainsRe(output[0], '\n\\-original line\n\\+repo line\n')
def test_custom_format(self):
class BooDiffTree(DiffTree):
def show_diff(self, specific_files, extra_trees=None):
self.to_file.write("BOO!\n")
return super(BooDiffTree, self).show_diff(specific_files,
extra_trees)
diff_format_registry.register("boo", BooDiffTree,
"Scary diff format")
self.addCleanup(diff_format_registry.remove, "boo")
self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!\n')])
output = self.run_bzr('diff --format=boo', retcode=1)
self.assertTrue("BOO!" in output[0])
class TestCheckoutDiff(TestDiff):
def make_example_branch(self):
tree = super(TestCheckoutDiff, self).make_example_branch()
tree = tree.branch.create_checkout('checkout')
os.chdir('checkout')
return tree
def example_branch2(self):
tree = super(TestCheckoutDiff, self).example_branch2()
os.mkdir('checkouts')
tree = tree.branch.create_checkout('checkouts/branch1')
os.chdir('checkouts')
return tree
def example_branches(self):
branch1_tree, branch2_tree = super(TestCheckoutDiff, self).example_branches()
os.mkdir('checkouts')
branch1_tree = branch1_tree.branch.create_checkout('checkouts/branch1')
branch2_tree = branch2_tree.branch.create_checkout('checkouts/branch2')
os.chdir('checkouts')
return branch1_tree, branch2_tree
class TestDiffLabels(DiffBase):
def test_diff_label_removed(self):
tree = super(TestDiffLabels, self).make_example_branch()
tree.remove('hello', keep_files=False)
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== removed file 'hello'" in diff[0])
def test_diff_label_added(self):
tree = super(TestDiffLabels, self).make_example_branch()
self.build_tree_contents([('barbar', 'barbar')])
tree.add('barbar')
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== added file 'barbar'" in diff[0])
def test_diff_label_modified(self):
super(TestDiffLabels, self).make_example_branch()
self.build_tree_contents([('hello', 'barbar')])
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== modified file 'hello'" in diff[0])
def test_diff_label_renamed(self):
tree = super(TestDiffLabels, self).make_example_branch()
tree.rename_one('hello', 'gruezi')
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== renamed file 'hello' => 'gruezi'" in diff[0])
class TestExternalDiff(DiffBase):
def test_external_diff(self):
"""Test that we can spawn an external diff process"""
self.disable_missing_extensions_warning()
# We have to use run_bzr_subprocess, because we need to
# test writing directly to stdout, (there was a bug in
# subprocess.py that we had to workaround).
# However, if 'diff' may not be available
self.make_example_branch()
# this will be automatically restored by the base bzr test class
os.environ['BZR_PROGRESS_BAR'] = 'none'
out, err = self.run_bzr_subprocess('diff -r 1 --diff-options -ub',
universal_newlines=True,
retcode=None)
if 'Diff is not installed on this machine' in err:
raise tests.TestSkipped("No external 'diff' is available")
self.assertEqual('', err)
# We have to skip the stuff in the middle, because it depends
# on time.time()
self.assertStartsWith(out, "=== added file 'goodbye'\n"
"--- goodbye\t1970-01-01 00:00:00 +0000\n"
"+++ goodbye\t")
self.assertEndsWith(out, "\n@@ -0,0 +1 @@\n"
"+baz\n\n")
class TestDiffOutput(DiffBase):
def test_diff_output(self):
# check that output doesn't mangle line-endings
self.make_example_branch()
self.build_tree_contents([('hello', 'hello world!\n')])
output = self.run_bzr_subprocess('diff', retcode=1)[0]
self.assert_('\n+hello world!\n' in output)
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