# Copyright (C) 2006-2012 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 remove-tree."""

import os

from bzrlib import shelf
from bzrlib.tests import TestCaseWithTransport


class TestRemoveTree(TestCaseWithTransport):

    def setUp(self):
        super(TestRemoveTree, self).setUp()
        self.tree = self.make_branch_and_tree('branch1')
        self.build_tree(['branch1/foo'])
        self.tree.add('foo')
        self.tree.commit('1')
        self.assertPathExists('branch1/foo')

    # Success modes

    def test_remove_tree_original_branch(self):
        self.run_bzr('remove-tree', working_dir='branch1')
        self.assertPathDoesNotExist('branch1/foo')

    def test_remove_tree_original_branch_explicit(self):
        self.run_bzr('remove-tree branch1')
        self.assertPathDoesNotExist('branch1/foo')

    def test_remove_tree_multiple_branch_explicit(self):
        self.tree.bzrdir.sprout('branch2')
        self.run_bzr('remove-tree branch1 branch2')
        self.assertPathDoesNotExist('branch1/foo')
        self.assertPathDoesNotExist('branch2/foo')

    def test_remove_tree_sprouted_branch(self):
        self.tree.bzrdir.sprout('branch2')
        self.assertPathExists('branch2/foo')
        self.run_bzr('remove-tree', working_dir='branch2')
        self.assertPathDoesNotExist('branch2/foo')

    def test_remove_tree_sprouted_branch_explicit(self):
        self.tree.bzrdir.sprout('branch2')
        self.assertPathExists('branch2/foo')
        self.run_bzr('remove-tree branch2')
        self.assertPathDoesNotExist('branch2/foo')

    def test_remove_tree_checkout(self):
        self.tree.branch.create_checkout('branch2', lightweight=False)
        self.assertPathExists('branch2/foo')
        self.run_bzr('remove-tree', working_dir='branch2')
        self.assertPathDoesNotExist('branch2/foo')
        self.assertPathExists('branch1/foo')

    def test_remove_tree_checkout_explicit(self):
        self.tree.branch.create_checkout('branch2', lightweight=False)
        self.assertPathExists('branch2/foo')
        self.run_bzr('remove-tree branch2')
        self.assertPathDoesNotExist('branch2/foo')
        self.assertPathExists('branch1/foo')

    # Failure modes

    def test_remove_tree_lightweight_checkout(self):
        self.tree.branch.create_checkout('branch2', lightweight=True)
        self.assertPathExists('branch2/foo')
        output = self.run_bzr_error(
            ["You cannot remove the working tree from a lightweight checkout"],
            'remove-tree', retcode=3, working_dir='branch2')
        self.assertPathExists('branch2/foo')
        self.assertPathExists('branch1/foo')

    def test_remove_tree_lightweight_checkout_explicit(self):
        self.tree.branch.create_checkout('branch2', lightweight=True)
        self.assertPathExists('branch2/foo')
        output = self.run_bzr_error(
            ["You cannot remove the working tree from a lightweight checkout"],
            'remove-tree branch2', retcode=3)
        self.assertPathExists('branch2/foo')
        self.assertPathExists('branch1/foo')

    def test_remove_tree_empty_dir(self):
        os.mkdir('branch2')
        output = self.run_bzr_error(
            ["Not a branch"], 'remove-tree', retcode=3, working_dir='branch2')

    def test_remove_tree_repeatedly(self):
        self.run_bzr('remove-tree branch1')
        self.assertPathDoesNotExist('branch1/foo')
        output = self.run_bzr_error(["No working tree to remove"],
                                    'remove-tree branch1', retcode=3)

    def test_remove_tree_remote_path(self):
        # TODO: I can't think of a way to implement this...
        pass

    def test_remove_tree_uncommitted_changes(self):
        self.build_tree(['branch1/bar'])
        self.tree.add('bar')
        output = self.run_bzr_error(["Working tree .* has uncommitted changes"],
                                    'remove-tree branch1', retcode=3)

    def test_remove_tree_uncommitted_changes_force(self):
        self.build_tree(['branch1/bar'])
        self.tree.add('bar')
        self.run_bzr('remove-tree branch1 --force')
        self.assertPathDoesNotExist('branch1/foo')
        self.assertPathExists('branch1/bar')

    def test_remove_tree_pending_merges(self):
        self.run_bzr(['branch', 'branch1', 'branch2'])
        self.build_tree(['branch1/bar'])
        self.tree.add('bar')
        self.tree.commit('2')
        self.assertPathExists('branch1/bar')
        self.run_bzr(['merge', '../branch1'], working_dir='branch2')
        self.assertPathExists('branch2/bar')
        self.run_bzr(['revert', '.'], working_dir='branch2')
        self.assertPathDoesNotExist('branch2/bar')
        output = self.run_bzr_error(["Working tree .* has uncommitted changes"],
                                    'remove-tree branch2', retcode=3)

    def test_remove_tree_pending_merges_force(self):
        self.run_bzr(['branch', 'branch1', 'branch2'])
        self.build_tree(['branch1/bar'])
        self.tree.add('bar')
        self.tree.commit('2')
        self.assertPathExists('branch1/bar')
        self.run_bzr(['merge', '../branch1'], working_dir='branch2')
        self.assertPathExists('branch2/bar')
        self.run_bzr(['revert', '.'], working_dir='branch2')
        self.assertPathDoesNotExist('branch2/bar')
        self.run_bzr('remove-tree branch2 --force')
        self.assertPathDoesNotExist('branch2/foo')
        self.assertPathDoesNotExist('branch2/bar')

    def test_remove_tree_shelved_changes(self):
        # https://bugs.launchpad.net/bzr/+bug/586639
        tree = self.make_branch_and_tree('.')
        creator = shelf.ShelfCreator(tree, tree.basis_tree(), [])
        self.addCleanup(creator.finalize)
        shelf_id = tree.get_shelf_manager().shelve_changes(creator, 'Foo')
        output = self.run_bzr_error(["Working tree .* has shelved changes"],
                                    'remove-tree', retcode=3)

    def test_remove_tree_shelved_changes_force(self):
        tree = self.make_branch_and_tree('.')
        creator = shelf.ShelfCreator(tree, tree.basis_tree(), [])
        self.addCleanup(creator.finalize)
        shelf_id = tree.get_shelf_manager().shelve_changes(creator, 'Foo')
        self.run_bzr('remove-tree --force')
        self.run_bzr('checkout')
        # Ensure shelf is empty
        self.assertIs(None, tree.get_shelf_manager().last_shelf())
