~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 bzrlib

from bzrlib.branch import Branch

from bzrlib.tests.blackbox import ExternalBase

class TestDiff(ExternalBase):

    def make_example_branch(test):

        # FIXME: copied from test_too_much -- share elsewhere?

        test.runbzr('init')

        file('hello', 'wt').write('foo\n')

        test.runbzr('add hello')

        test.runbzr('commit -m setup hello')

        file('goodbye', 'wt').write('baz\n')

        test.runbzr('add goodbye')

        test.runbzr('commit -m setup goodbye')

    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', 'wt').write('hello world!\n')

        out, err = self.runbzr('diff --prefix old/:new/', retcode=1)

        self.assertEquals(err, '')

        self.assertEqualDiff(out, '''\

=== modified file 'hello'

--- old/hello\t

+++ new/hello\t

@@ -1,1 +1,1 @@

-foo

+hello world!

''')

    def test_diff_p1(self):

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

        self.make_example_branch()

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

        out, err = self.runbzr('diff -p1', retcode=1)

        self.assertEquals(err, '')

        self.assertEqualDiff(out, '''\

=== modified file 'hello'

--- old/hello\t

+++ new/hello\t

@@ -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', 'wt').write('hello world!\n')

        out, err = self.runbzr('diff -p0', retcode=1)

        self.assertEquals(err, '')

        self.assertEqualDiff(out, '''\

=== modified file 'hello'

--- hello\t

+++ hello\t

@@ -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, 

        output = self.run_bzr_captured(['diff', '-r', 'branch:branch2', 

                                        'branch1'],

                                       retcode=1)

        self.assertEquals(("=== modified file 'file'\n"

                           "--- file\t\n"

                           "+++ file\t\n"

                           "@@ -1,1 +1,1 @@\n"

                           "-new content\n"

                           "+contents of branch1/file\n"

                           "\n", ''), output)

        output = self.run_bzr_captured(['diff', 'branch2', 'branch1'],

                                       retcode=1)

        self.assertEqualDiff(("=== modified file 'file'\n"

                              "--- file\t\n"

                              "+++ file\t\n"

                              "@@ -1,1 +1,1 @@\n"

                              "-new content\n"

                              "+contents of branch1/file\n"

                              "\n", ''), output)

    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])

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])