~bzr-pqm/bzr/bzr.dev

# Copyright (C) 2005, 2006 by 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 TestDiff(ExternalBase):

    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')

    def test_diff(self):

        self.make_example_branch()

        file('hello', 'wt').write('hello world!')

        self.runbzr('commit -m fixing hello')

        output = self.runbzr('diff -r 2..3', backtick=1, retcode=1)

        self.assert_('\n+hello world!' in output)

        output = self.runbzr('diff -r last:3..last:1', backtick=1, retcode=1)

        self.assert_('\n+baz' in output)

        file('moo', 'wb').write('moo')

        self.runbzr('add moo')

        os.unlink('moo')

        self.runbzr('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.runbzr('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_p1(self):

        """diff -p1 produces lkml-style diffs"""

        self.make_example_branch()

        file('hello', 'wb').write('hello world!\n')

        out, err = self.runbzr('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.runbzr('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.runbzr('diff does-not-exist', retcode=3)

        self.assertContainsRe(err, 'not versioned.*does-not-exist')

    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.runbzr('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.capture('init branch1')

        self.capture('add branch1/file')

        self.run_bzr_captured(['commit', '-m', 'add file', 'branch1'])

        self.capture('branch branch1 branch2')

        print >> open('branch2/file', 'wb'), 'new content'

        self.run_bzr_captured(['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_captured(['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_captured(['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_captured(['commit', '-m', 

                               'update file once more', 'branch2'])

        out, err = self.run_bzr_captured(['diff', '-r',

                                          'revno:1:branch2..revno:1:branch1'],

                                         retcode=0)

        self.assertEquals('', err)

        self.assertEquals('', out)

        out, err = self.run_bzr_captured(['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.capture('init branch1')

        self.capture('add branch1/file1')

        print >> open('branch1/file1', 'wb'), 'original line'

        self.run_bzr_captured(['commit', '-m', 'first commit', 'branch1'])

        print >> open('branch1/file1', 'wb'), 'repo line'

        self.run_bzr_captured(['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_captured(['diff', '-r', '1..', 'branch1'],

                                       retcode=1)

        self.assertTrue('\n-original line\n+new line\n' in output[0])

    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.runbzr('checkout . checkout')

        os.chdir('checkout')

    def example_branch2(self):

        super(TestCheckoutDiff, self).example_branch2()

        os.mkdir('checkouts')

        self.runbzr('checkout branch1 checkouts/branch1')

        os.chdir('checkouts')

    def example_branches(self):

        super(TestCheckoutDiff, self).example_branches()

        os.mkdir('checkouts')

        self.runbzr('checkout branch1 checkouts/branch1')

        self.runbzr('checkout branch2 checkouts/branch2')

        os.chdir('checkouts')

class TestDiffLabels(TestDiff):

    def test_diff_label_removed(self):

        super(TestDiffLabels, self).make_example_branch()

        self.runbzr('remove hello')

        diff = self.run_bzr_captured(['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.runbzr('add barbar')

        diff = self.run_bzr_captured(['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_captured(['diff'], retcode=1)

        self.assertTrue("=== modified file 'hello'" in diff[0])

    def test_diff_label_renamed(self):

        super(TestDiffLabels, self).make_example_branch()

        self.runbzr('rename hello gruezi')

        diff = self.run_bzr_captured(['diff'], retcode=1)

        self.assertTrue("=== renamed file 'hello' => 'gruezi'" in diff[0])

class TestExternalDiff(TestDiff):

    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',

                                               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")