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Viewing changes to bzrlib/tests/blackbox/test_diff.py

  • Committer: Canonical.com Patch Queue Manager
  • Date: 2010-07-07 04:03:32 UTC
  • mfrom: (5335.2.3 doc)
  • Revision ID: pqm@pqm.ubuntu.com-20100707040332-we60v2hsd39rumlr
(mbp) developer docs about testing (Martin Pool)

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bzrlib/tests/blackbox/test_diff.py
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# Copyright (C) 2005, 2006 Canonical Ltd
 
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# Copyright (C) 2006-2010 Canonical Ltd
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#
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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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#
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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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
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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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import os
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import re
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import bzrlib
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from bzrlib import workingtree
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from bzrlib.branch import Branch
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from bzrlib.tests import TestSkipped
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from bzrlib.tests.blackbox import ExternalBase
 
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from bzrlib import (
 
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    tests,
 
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    workingtree,
 
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    )
 
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from bzrlib.diff import (
 
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    DiffTree,
 
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    format_registry as diff_format_registry,
 
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    )
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def subst_dates(string):
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                  'YYYY-MM-DD HH:MM:SS +ZZZZ', string)
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class DiffBase(ExternalBase):
 
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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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        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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    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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        # 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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        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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                    extra_trees)
 
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        diff_format_registry.register("boo", BooDiffTree, 
 
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            "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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class TestCheckoutDiff(TestDiff):
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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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        orig_progress = os.environ.get('BZR_PROGRESS_BAR')
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        try:
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            os.environ['BZR_PROGRESS_BAR'] = 'none'
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            out, err = self.run_bzr_subprocess('diff -r 1 --diff-options -ub',
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                                               universal_newlines=True,
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                                               retcode=None)
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        finally:
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            if orig_progress is None:
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                del os.environ['BZR_PROGRESS_BAR']
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            else:
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                os.environ['BZR_PROGRESS_BAR'] = orig_progress
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        # this will be automatically restored by the base bzr test class
 
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        os.environ['BZR_PROGRESS_BAR'] = 'none'
 
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        out, err = self.run_bzr_subprocess('diff -r 1 --diff-options -ub',
 
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                                           universal_newlines=True,
 
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                                           retcode=None)
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        if 'Diff is not installed on this machine' in err:
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            raise TestSkipped("No external 'diff' is available")
 
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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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        # on time.time()