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# Copyright (C) 2005, 2006 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
"""Black-box tests for bzr diff.
"""
import os
import re
import bzrlib
from bzrlib import workingtree
from bzrlib.branch import Branch
from bzrlib.tests import TestSkipped
from bzrlib.tests.blackbox import ExternalBase
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(ExternalBase):
"""Base class with common setup method"""
def make_example_branch(self):
# FIXME: copied from test_too_much -- share elsewhere?
tree = self.make_branch_and_tree('.')
open('hello', 'wb').write('foo\n')
tree.add(['hello'])
tree.commit('setup')
open('goodbye', 'wb').write('baz\n')
tree.add(['goodbye'])
tree.commit('setup')
class TestDiff(DiffBase):
def test_diff(self):
self.make_example_branch()
file('hello', 'wt').write('hello world!')
self.run_bzr('commit -m 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 -r last:3..last:1',
retcode=1)[0]
self.assert_('\n+baz' in output)
self.build_tree(['moo'])
self.run_bzr('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()
file('hello', 'wb').write('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()
file('hello', 'wb').write('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()
file('hello', 'wb').write('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)
self.assertContainsRe(err, 'not versioned.*does-not-exist')
def test_diff_illegal_revision_specifiers(self):
out, err = self.run_bzr('diff -r 1..23..123', retcode=3)
self.assertContainsRe(err, 'one or two revision specifiers')
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):
self.build_tree(['branch1/', 'branch1/file'], line_endings='binary')
self.run_bzr('init branch1')[0]
self.run_bzr('add branch1/file')[0]
self.run_bzr(['commit', '-m', 'add file', 'branch1'])
self.run_bzr('branch branch1 branch2')[0]
self.build_tree_contents([('branch2/file', 'new content\n')])
self.run_bzr(['commit', '-m', 'update file', 'branch2'])
def test_diff_branches(self):
self.example_branches()
# should open branch1 and diff against branch2,
out, err = self.run_bzr('diff -r branch:branch2 branch1',
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))
out, err = self.run_bzr('diff branch2 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 test_diff_revno_branches(self):
self.example_branches()
print >> open('branch2/file', 'wb'), 'even newer content'
self.run_bzr(['commit', '-m',
'update file once more', 'branch2'])
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):
self.build_tree(['branch1/', 'branch1/file1'], line_endings='binary')
self.run_bzr('init branch1')[0]
self.run_bzr('add branch1/file1')[0]
print >> open('branch1/file1', 'wb'), 'original line'
self.run_bzr(['commit', '-m', 'first commit', 'branch1'])
print >> open('branch1/file1', 'wb'), 'repo line'
self.run_bzr(['commit', '-m', 'second commit', 'branch1'])
def test_diff_to_working_tree(self):
self.example_branch2()
print >> open('branch1/file1', 'wb'), '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_across_rename(self):
"""The working tree path should always be considered for diffing"""
self.make_example_branch()
self.run_bzr('diff -r 0..1 hello', retcode=1)
wt = workingtree.WorkingTree.open_containing('.')[0]
wt.rename_one('hello', 'hello1')
self.run_bzr('diff hello1', retcode=1)
self.run_bzr('diff -r 0..1 hello1', retcode=1)
class TestCheckoutDiff(TestDiff):
def make_example_branch(self):
super(TestCheckoutDiff, self).make_example_branch()
self.run_bzr('checkout . checkout')
os.chdir('checkout')
def example_branch2(self):
super(TestCheckoutDiff, self).example_branch2()
os.mkdir('checkouts')
self.run_bzr('checkout branch1 checkouts/branch1')
os.chdir('checkouts')
def example_branches(self):
super(TestCheckoutDiff, self).example_branches()
os.mkdir('checkouts')
self.run_bzr('checkout branch1 checkouts/branch1')
self.run_bzr('checkout branch2 checkouts/branch2')
os.chdir('checkouts')
class TestDiffLabels(DiffBase):
def test_diff_label_removed(self):
super(TestDiffLabels, self).make_example_branch()
self.run_bzr('remove hello')
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== removed file 'hello'" in diff[0])
def test_diff_label_added(self):
super(TestDiffLabels, self).make_example_branch()
file('barbar', 'wt').write('barbar')
self.run_bzr('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()
file('hello', 'wt').write('barbar')
diff = self.run_bzr('diff', retcode=1)
self.assertTrue("=== modified file 'hello'" in diff[0])
def test_diff_label_renamed(self):
super(TestDiffLabels, self).make_example_branch()
self.run_bzr('rename 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"""
# 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()
orig_progress = os.environ.get('BZR_PROGRESS_BAR')
try:
os.environ['BZR_PROGRESS_BAR'] = 'none'
out, err = self.run_bzr_subprocess('diff -r 1 --diff-options -ub',
universal_newlines=True,
retcode=None)
finally:
if orig_progress is None:
del os.environ['BZR_PROGRESS_BAR']
else:
os.environ['BZR_PROGRESS_BAR'] = orig_progress
if 'Diff is not installed on this machine' in err:
raise 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()
file('hello', 'wb').write('hello world!\n')
output = self.run_bzr_subprocess('diff', retcode=1)[0]
self.assert_('\n+hello world!\n' in output)
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