#!/usr/bin/python
# Copyright (C) 2019 Jelmer Vernooij
#
# 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

"""Tests for lintian_brush.dirty_tracker."""

import os

from breezy.tests import (
    TestCaseWithTransport,
    )


class DirtyTrackerTests(TestCaseWithTransport):

    def setUp(self):
        super(DirtyTrackerTests, self).setUp()
        self.tree = self.make_branch_and_tree('tree')
        try:
            from lintian_brush.dirty_tracker import DirtyTracker
        except ImportError:
            self.skipTest('pyinotify not available')
        self.tracker = DirtyTracker(self.tree)

    def test_nothing_changes(self):
        self.assertFalse(self.tracker.is_dirty())

    def test_regular_file_added(self):
        self.build_tree_contents([('tree/foo', 'bar')])
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set(['foo']))

    def test_many_added(self):
        self.build_tree_contents(
            [('tree/f%d' % d, 'content') for d in range(100)])
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(
            self.tracker.relpaths(), set(['f%d' % d for d in range(100)]))

    def test_regular_file_in_subdir_added(self):
        self.build_tree_contents([('tree/foo/', ), ('tree/foo/blah', 'bar')])
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set(['foo', 'foo/blah']))

    def test_directory_added(self):
        self.build_tree_contents([('tree/foo/', )])
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set(['foo']))

    def test_file_removed(self):
        self.build_tree_contents([('tree/foo', 'foo')])
        self.assertTrue(self.tracker.is_dirty())
        self.tracker.mark_clean()
        self.build_tree_contents([('tree/foo', 'bar')])
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set(['foo']))

    def test_control_file(self):
        self.tree.commit('Some change')
        self.assertFalse(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set([]))

    def test_renamed(self):
        self.build_tree_contents([('tree/foo', 'bar')])
        self.tracker.mark_clean()
        self.assertFalse(self.tracker.is_dirty())
        os.rename('tree/foo', 'tree/bar')
        self.assertTrue(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set(['foo', 'bar']))

    def test_deleted(self):
        self.build_tree_contents([('tree/foo', 'bar')])
        self.tracker.mark_clean()
        self.assertFalse(self.tracker.is_dirty())
        os.unlink('tree/foo')
        self.assertTrue(self.tracker.is_dirty(), self.tracker._process.paths)
        self.assertEqual(self.tracker.relpaths(), set(['foo']))

    def test_added_then_deleted(self):
        self.tracker.mark_clean()
        self.assertFalse(self.tracker.is_dirty())
        self.build_tree_contents([('tree/foo', 'bar')])
        os.unlink('tree/foo')
        self.assertFalse(self.tracker.is_dirty())
        self.assertEqual(self.tracker.relpaths(), set([]))