from __future__ import with_statement

import os
import mock
import datetime
from rhodecode.lib.vcs.backends.git import GitRepository, GitChangeset
from rhodecode.lib.vcs.exceptions import RepositoryError, VCSError, NodeDoesNotExistError
from rhodecode.lib.vcs.nodes import NodeKind, FileNode, DirNode, NodeState
from rhodecode.lib.vcs.utils.compat import unittest
from rhodecode.tests.vcs.base import BackendTestMixin
from conf import TEST_GIT_REPO, TEST_GIT_REPO_CLONE, get_new_dir


class GitRepositoryTest(unittest.TestCase):

    def __check_for_existing_repo(self):
        if os.path.exists(TEST_GIT_REPO_CLONE):
            self.fail('Cannot test git clone repo as location %s already '
                      'exists. You should manually remove it first.'
                      % TEST_GIT_REPO_CLONE)

    def setUp(self):
        self.repo = GitRepository(TEST_GIT_REPO)

    def test_wrong_repo_path(self):
        wrong_repo_path = '/tmp/errorrepo'
        self.assertRaises(RepositoryError, GitRepository, wrong_repo_path)

    def test_repo_clone(self):
        self.__check_for_existing_repo()
        repo = GitRepository(TEST_GIT_REPO)
        repo_clone = GitRepository(TEST_GIT_REPO_CLONE,
            src_url=TEST_GIT_REPO, create=True, update_after_clone=True)
        self.assertEqual(len(repo.revisions), len(repo_clone.revisions))
        # Checking hashes of changesets should be enough
        for changeset in repo.get_changesets():
            raw_id = changeset.raw_id
            self.assertEqual(raw_id, repo_clone.get_changeset(raw_id).raw_id)

    def test_repo_clone_without_create(self):
        self.assertRaises(RepositoryError, GitRepository,
            TEST_GIT_REPO_CLONE + '_wo_create', src_url=TEST_GIT_REPO)

    def test_repo_clone_with_update(self):
        repo = GitRepository(TEST_GIT_REPO)
        clone_path = TEST_GIT_REPO_CLONE + '_with_update'
        repo_clone = GitRepository(clone_path,
            create=True, src_url=TEST_GIT_REPO, update_after_clone=True)
        self.assertEqual(len(repo.revisions), len(repo_clone.revisions))

        #check if current workdir was updated
        fpath = os.path.join(clone_path, 'MANIFEST.in')
        self.assertEqual(True, os.path.isfile(fpath),
            'Repo was cloned and updated but file %s could not be found'
            % fpath)

    def test_repo_clone_without_update(self):
        repo = GitRepository(TEST_GIT_REPO)
        clone_path = TEST_GIT_REPO_CLONE + '_without_update'
        repo_clone = GitRepository(clone_path,
            create=True, src_url=TEST_GIT_REPO, update_after_clone=False)
        self.assertEqual(len(repo.revisions), len(repo_clone.revisions))
        #check if current workdir was *NOT* updated
        fpath = os.path.join(clone_path, 'MANIFEST.in')
        # Make sure it's not bare repo
        self.assertFalse(repo_clone._repo.bare)
        self.assertEqual(False, os.path.isfile(fpath),
            'Repo was cloned and updated but file %s was found'
            % fpath)

    def test_repo_clone_into_bare_repo(self):
        repo = GitRepository(TEST_GIT_REPO)
        clone_path = TEST_GIT_REPO_CLONE + '_bare.git'
        repo_clone = GitRepository(clone_path, create=True,
            src_url=repo.path, bare=True)
        self.assertTrue(repo_clone._repo.bare)

    def test_create_repo_is_not_bare_by_default(self):
        repo = GitRepository(get_new_dir('not-bare-by-default'), create=True)
        self.assertFalse(repo._repo.bare)

    def test_create_bare_repo(self):
        repo = GitRepository(get_new_dir('bare-repo'), create=True, bare=True)
        self.assertTrue(repo._repo.bare)

    def test_revisions(self):
        # there are 112 revisions (by now)
        # so we can assume they would be available from now on
        subset = set([
            'c1214f7e79e02fc37156ff215cd71275450cffc3',
            '38b5fe81f109cb111f549bfe9bb6b267e10bc557',
            'fa6600f6848800641328adbf7811fd2372c02ab2',
            '102607b09cdd60e2793929c4f90478be29f85a17',
            '49d3fd156b6f7db46313fac355dca1a0b94a0017',
            '2d1028c054665b962fa3d307adfc923ddd528038',
            'd7e0d30fbcae12c90680eb095a4f5f02505ce501',
            'ff7ca51e58c505fec0dd2491de52c622bb7a806b',
            'dd80b0f6cf5052f17cc738c2951c4f2070200d7f',
            '8430a588b43b5d6da365400117c89400326e7992',
            'd955cd312c17b02143c04fa1099a352b04368118',
            'f67b87e5c629c2ee0ba58f85197e423ff28d735b',
            'add63e382e4aabc9e1afdc4bdc24506c269b7618',
            'f298fe1189f1b69779a4423f40b48edf92a703fc',
            'bd9b619eb41994cac43d67cf4ccc8399c1125808',
            '6e125e7c890379446e98980d8ed60fba87d0f6d1',
            'd4a54db9f745dfeba6933bf5b1e79e15d0af20bd',
            '0b05e4ed56c802098dfc813cbe779b2f49e92500',
            '191caa5b2c81ed17c0794bf7bb9958f4dcb0b87e',
            '45223f8f114c64bf4d6f853e3c35a369a6305520',
            'ca1eb7957a54bce53b12d1a51b13452f95bc7c7e',
            'f5ea29fc42ef67a2a5a7aecff10e1566699acd68',
            '27d48942240f5b91dfda77accd2caac94708cc7d',
            '622f0eb0bafd619d2560c26f80f09e3b0b0d78af',
            'e686b958768ee96af8029fe19c6050b1a8dd3b2b'])
        self.assertTrue(subset.issubset(set(self.repo.revisions)))



    def test_slicing(self):
        #4 1 5 10 95
        for sfrom, sto, size in [(0, 4, 4), (1, 2, 1), (10, 15, 5),
                                 (10, 20, 10), (5, 100, 95)]:
            revs = list(self.repo[sfrom:sto])
            self.assertEqual(len(revs), size)
            self.assertEqual(revs[0], self.repo.get_changeset(sfrom))
            self.assertEqual(revs[-1], self.repo.get_changeset(sto - 1))


    def test_branches(self):
        # TODO: Need more tests here
        # Removed (those are 'remotes' branches for cloned repo)
        #self.assertTrue('master' in self.repo.branches)
        #self.assertTrue('gittree' in self.repo.branches)
        #self.assertTrue('web-branch' in self.repo.branches)
        for name, id in self.repo.branches.items():
            self.assertTrue(isinstance(
                self.repo.get_changeset(id), GitChangeset))

    def test_tags(self):
        # TODO: Need more tests here
        self.assertTrue('v0.1.1' in self.repo.tags)
        self.assertTrue('v0.1.2' in self.repo.tags)
        for name, id in self.repo.tags.items():
            self.assertTrue(isinstance(
                self.repo.get_changeset(id), GitChangeset))

    def _test_single_changeset_cache(self, revision):
        chset = self.repo.get_changeset(revision)
        self.assertTrue(revision in self.repo.changesets)
        self.assertTrue(chset is self.repo.changesets[revision])

    def test_initial_changeset(self):
        id = self.repo.revisions[0]
        init_chset = self.repo.get_changeset(id)
        self.assertEqual(init_chset.message, 'initial import\n')
        self.assertEqual(init_chset.author,
            'Marcin Kuzminski <marcin@python-blog.com>')
        for path in ('vcs/__init__.py',
                     'vcs/backends/BaseRepository.py',
                     'vcs/backends/__init__.py'):
            self.assertTrue(isinstance(init_chset.get_node(path), FileNode))
        for path in ('', 'vcs', 'vcs/backends'):
            self.assertTrue(isinstance(init_chset.get_node(path), DirNode))

        self.assertRaises(NodeDoesNotExistError, init_chset.get_node, path='foobar')

        node = init_chset.get_node('vcs/')
        self.assertTrue(hasattr(node, 'kind'))
        self.assertEqual(node.kind, NodeKind.DIR)

        node = init_chset.get_node('vcs')
        self.assertTrue(hasattr(node, 'kind'))
        self.assertEqual(node.kind, NodeKind.DIR)

        node = init_chset.get_node('vcs/__init__.py')
        self.assertTrue(hasattr(node, 'kind'))
        self.assertEqual(node.kind, NodeKind.FILE)

    def test_not_existing_changeset(self):
        self.assertRaises(RepositoryError, self.repo.get_changeset,
            'f' * 40)

    def test_changeset10(self):

        chset10 = self.repo.get_changeset(self.repo.revisions[9])
        README = """===
VCS
===

Various Version Control System management abstraction layer for Python.

Introduction
------------

TODO: To be written...

"""
        node = chset10.get_node('README.rst')
        self.assertEqual(node.kind, NodeKind.FILE)
        self.assertEqual(node.content, README)


class GitChangesetTest(unittest.TestCase):

    def setUp(self):
        self.repo = GitRepository(TEST_GIT_REPO)

    def test_default_changeset(self):
        tip = self.repo.get_changeset()
        self.assertEqual(tip, self.repo.get_changeset(None))
        self.assertEqual(tip, self.repo.get_changeset('tip'))

    def test_root_node(self):
        tip = self.repo.get_changeset()
        self.assertTrue(tip.root is tip.get_node(''))

    def test_lazy_fetch(self):
        """
        Test if changeset's nodes expands and are cached as we walk through
        the revision. This test is somewhat hard to write as order of tests
        is a key here. Written by running command after command in a shell.
        """
        hex = '2a13f185e4525f9d4b59882791a2d397b90d5ddc'
        self.assertTrue(hex in self.repo.revisions)
        chset = self.repo.get_changeset(hex)
        self.assertTrue(len(chset.nodes) == 0)
        root = chset.root
        self.assertTrue(len(chset.nodes) == 1)
        self.assertTrue(len(root.nodes) == 8)
        # accessing root.nodes updates chset.nodes
        self.assertTrue(len(chset.nodes) == 9)

        docs = root.get_node('docs')
        # we haven't yet accessed anything new as docs dir was already cached
        self.assertTrue(len(chset.nodes) == 9)
        self.assertTrue(len(docs.nodes) == 8)
        # accessing docs.nodes updates chset.nodes
        self.assertTrue(len(chset.nodes) == 17)

        self.assertTrue(docs is chset.get_node('docs'))
        self.assertTrue(docs is root.nodes[0])
        self.assertTrue(docs is root.dirs[0])
        self.assertTrue(docs is chset.get_node('docs'))

    def test_nodes_with_changeset(self):
        hex = '2a13f185e4525f9d4b59882791a2d397b90d5ddc'
        chset = self.repo.get_changeset(hex)
        root = chset.root
        docs = root.get_node('docs')
        self.assertTrue(docs is chset.get_node('docs'))
        api = docs.get_node('api')
        self.assertTrue(api is chset.get_node('docs/api'))
        index = api.get_node('index.rst')
        self.assertTrue(index is chset.get_node('docs/api/index.rst'))
        self.assertTrue(index is chset.get_node('docs')\
            .get_node('api')\
            .get_node('index.rst'))

    def test_branch_and_tags(self):
        '''
        rev0 = self.repo.revisions[0]
        chset0 = self.repo.get_changeset(rev0)
        self.assertEqual(chset0.branch, 'master')
        self.assertEqual(chset0.tags, [])

        rev10 = self.repo.revisions[10]
        chset10 = self.repo.get_changeset(rev10)
        self.assertEqual(chset10.branch, 'master')
        self.assertEqual(chset10.tags, [])

        rev44 = self.repo.revisions[44]
        chset44 = self.repo.get_changeset(rev44)
        self.assertEqual(chset44.branch, 'web-branch')

        tip = self.repo.get_changeset('tip')
        self.assertTrue('tip' in tip.tags)
        '''
        # Those tests would fail - branches are now going
        # to be changed at main API in order to support git backend
        pass

    def _test_slices(self, limit, offset):
        count = self.repo.count()
        changesets = self.repo.get_changesets(limit=limit, offset=offset)
        idx = 0
        for changeset in changesets:
            rev = offset + idx
            idx += 1
            rev_id = self.repo.revisions[rev]
            if idx > limit:
                self.fail("Exceeded limit already (getting revision %s, "
                    "there are %s total revisions, offset=%s, limit=%s)"
                    % (rev_id, count, offset, limit))
            self.assertEqual(changeset, self.repo.get_changeset(rev_id))
        result = list(self.repo.get_changesets(limit=limit, offset=offset))
        start = offset
        end = limit and offset + limit or None
        sliced = list(self.repo[start:end])
        self.failUnlessEqual(result, sliced,
            msg="Comparison failed for limit=%s, offset=%s"
            "(get_changeset returned: %s and sliced: %s"
            % (limit, offset, result, sliced))

    def _test_file_size(self, revision, path, size):
        node = self.repo.get_changeset(revision).get_node(path)
        self.assertTrue(node.is_file())
        self.assertEqual(node.size, size)

    def test_file_size(self):
        to_check = (
            ('c1214f7e79e02fc37156ff215cd71275450cffc3',
                'vcs/backends/BaseRepository.py', 502),
            ('d7e0d30fbcae12c90680eb095a4f5f02505ce501',
                'vcs/backends/hg.py', 854),
            ('6e125e7c890379446e98980d8ed60fba87d0f6d1',
                'setup.py', 1068),

            ('d955cd312c17b02143c04fa1099a352b04368118',
                'vcs/backends/base.py', 2921),
            ('ca1eb7957a54bce53b12d1a51b13452f95bc7c7e',
                'vcs/backends/base.py', 3936),
            ('f50f42baeed5af6518ef4b0cb2f1423f3851a941',
                'vcs/backends/base.py', 6189),
        )
        for revision, path, size in to_check:
            self._test_file_size(revision, path, size)

    def test_file_history(self):
        # we can only check if those revisions are present in the history
        # as we cannot update this test every time file is changed
        files = {
            'setup.py': [
                '54386793436c938cff89326944d4c2702340037d',
                '51d254f0ecf5df2ce50c0b115741f4cf13985dab',
                '998ed409c795fec2012b1c0ca054d99888b22090',
                '5e0eb4c47f56564395f76333f319d26c79e2fb09',
                '0115510b70c7229dbc5dc49036b32e7d91d23acd',
                '7cb3fd1b6d8c20ba89e2264f1c8baebc8a52d36e',
                '2a13f185e4525f9d4b59882791a2d397b90d5ddc',
                '191caa5b2c81ed17c0794bf7bb9958f4dcb0b87e',
                'ff7ca51e58c505fec0dd2491de52c622bb7a806b',
            ],
            'vcs/nodes.py': [
                '33fa3223355104431402a888fa77a4e9956feb3e',
                'fa014c12c26d10ba682fadb78f2a11c24c8118e1',
                'e686b958768ee96af8029fe19c6050b1a8dd3b2b',
                'ab5721ca0a081f26bf43d9051e615af2cc99952f',
                'c877b68d18e792a66b7f4c529ea02c8f80801542',
                '4313566d2e417cb382948f8d9d7c765330356054',
                '6c2303a793671e807d1cfc70134c9ca0767d98c2',
                '54386793436c938cff89326944d4c2702340037d',
                '54000345d2e78b03a99d561399e8e548de3f3203',
                '1c6b3677b37ea064cb4b51714d8f7498f93f4b2b',
                '2d03ca750a44440fb5ea8b751176d1f36f8e8f46',
                '2a08b128c206db48c2f0b8f70df060e6db0ae4f8',
                '30c26513ff1eb8e5ce0e1c6b477ee5dc50e2f34b',
                'ac71e9503c2ca95542839af0ce7b64011b72ea7c',
                '12669288fd13adba2a9b7dd5b870cc23ffab92d2',
                '5a0c84f3e6fe3473e4c8427199d5a6fc71a9b382',
                '12f2f5e2b38e6ff3fbdb5d722efed9aa72ecb0d5',
                '5eab1222a7cd4bfcbabc218ca6d04276d4e27378',
                'f50f42baeed5af6518ef4b0cb2f1423f3851a941',
                'd7e390a45f6aa96f04f5e7f583ad4f867431aa25',
                'f15c21f97864b4f071cddfbf2750ec2e23859414',
                'e906ef056cf539a4e4e5fc8003eaf7cf14dd8ade',
                'ea2b108b48aa8f8c9c4a941f66c1a03315ca1c3b',
                '84dec09632a4458f79f50ddbbd155506c460b4f9',
                '0115510b70c7229dbc5dc49036b32e7d91d23acd',
                '2a13f185e4525f9d4b59882791a2d397b90d5ddc',
                '3bf1c5868e570e39569d094f922d33ced2fa3b2b',
                'b8d04012574729d2c29886e53b1a43ef16dd00a1',
                '6970b057cffe4aab0a792aa634c89f4bebf01441',
                'dd80b0f6cf5052f17cc738c2951c4f2070200d7f',
                'ff7ca51e58c505fec0dd2491de52c622bb7a806b',
            ],
            'vcs/backends/git.py': [
                '4cf116ad5a457530381135e2f4c453e68a1b0105',
                '9a751d84d8e9408e736329767387f41b36935153',
                'cb681fb539c3faaedbcdf5ca71ca413425c18f01',
                '428f81bb652bcba8d631bce926e8834ff49bdcc6',
                '180ab15aebf26f98f714d8c68715e0f05fa6e1c7',
                '2b8e07312a2e89e92b90426ab97f349f4bce2a3a',
                '50e08c506174d8645a4bb517dd122ac946a0f3bf',
                '54000345d2e78b03a99d561399e8e548de3f3203',
            ],
        }
        for path, revs in files.items():
            node = self.repo.get_changeset(revs[0]).get_node(path)
            node_revs = [chset.raw_id for chset in node.history]
            self.assertTrue(set(revs).issubset(set(node_revs)),
                "We assumed that %s is subset of revisions for which file %s "
                "has been changed, and history of that node returned: %s"
                % (revs, path, node_revs))

    def test_file_annotate(self):
        files = {
            'vcs/backends/__init__.py': {
                'c1214f7e79e02fc37156ff215cd71275450cffc3': {
                    'lines_no': 1,
                    'changesets': [
                        'c1214f7e79e02fc37156ff215cd71275450cffc3',
                    ],
                },
                '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647': {
                    'lines_no': 21,
                    'changesets': [
                        '49d3fd156b6f7db46313fac355dca1a0b94a0017',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                    ],
                },
                'e29b67bd158580fc90fc5e9111240b90e6e86064': {
                    'lines_no': 32,
                    'changesets': [
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '5eab1222a7cd4bfcbabc218ca6d04276d4e27378',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '54000345d2e78b03a99d561399e8e548de3f3203',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '78c3f0c23b7ee935ec276acb8b8212444c33c396',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '2a13f185e4525f9d4b59882791a2d397b90d5ddc',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '78c3f0c23b7ee935ec276acb8b8212444c33c396',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '992f38217b979d0b0987d0bae3cc26dac85d9b19',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                        '16fba1ae9334d79b66d7afed2c2dfbfa2ae53647',
                    ],
                },
            },
        }

        for fname, revision_dict in files.items():
            for rev, data in revision_dict.items():
                cs = self.repo.get_changeset(rev)

                l1_1 = [x[1] for x in cs.get_file_annotate(fname)]
                l1_2 = [x[2]().raw_id for x in cs.get_file_annotate(fname)]
                self.assertEqual(l1_1, l1_2)
                l1 = l1_1
                l2 = files[fname][rev]['changesets']
                self.assertTrue(l1 == l2 , "The lists of revision for %s@rev %s"
                                "from annotation list should match each other, "
                                "got \n%s \nvs \n%s " % (fname, rev, l1, l2))

    def test_files_state(self):
        """
        Tests state of FileNodes.
        """
        node = self.repo\
            .get_changeset('e6ea6d16e2f26250124a1f4b4fe37a912f9d86a0')\
            .get_node('vcs/utils/diffs.py')
        self.assertTrue(node.state, NodeState.ADDED)
        self.assertTrue(node.added)
        self.assertFalse(node.changed)
        self.assertFalse(node.not_changed)
        self.assertFalse(node.removed)

        node = self.repo\
            .get_changeset('33fa3223355104431402a888fa77a4e9956feb3e')\
            .get_node('.hgignore')
        self.assertTrue(node.state, NodeState.CHANGED)
        self.assertFalse(node.added)
        self.assertTrue(node.changed)
        self.assertFalse(node.not_changed)
        self.assertFalse(node.removed)

        node = self.repo\
            .get_changeset('e29b67bd158580fc90fc5e9111240b90e6e86064')\
            .get_node('setup.py')
        self.assertTrue(node.state, NodeState.NOT_CHANGED)
        self.assertFalse(node.added)
        self.assertFalse(node.changed)
        self.assertTrue(node.not_changed)
        self.assertFalse(node.removed)

        # If node has REMOVED state then trying to fetch it would raise
        # ChangesetError exception
        chset = self.repo.get_changeset(
            'fa6600f6848800641328adbf7811fd2372c02ab2')
        path = 'vcs/backends/BaseRepository.py'
        self.assertRaises(NodeDoesNotExistError, chset.get_node, path)
        # but it would be one of ``removed`` (changeset's attribute)
        self.assertTrue(path in [rf.path for rf in chset.removed])

        chset = self.repo.get_changeset(
            '54386793436c938cff89326944d4c2702340037d')
        changed = ['setup.py', 'tests/test_nodes.py', 'vcs/backends/hg.py',
            'vcs/nodes.py']
        self.assertEqual(set(changed), set([f.path for f in chset.changed]))

    def test_commit_message_is_unicode(self):
        for cs in self.repo:
            self.assertEqual(type(cs.message), unicode)

    def test_changeset_author_is_unicode(self):
        for cs in self.repo:
            self.assertEqual(type(cs.author), unicode)

    def test_repo_files_content_is_unicode(self):
        changeset = self.repo.get_changeset()
        for node in changeset.get_node('/'):
            if node.is_file():
                self.assertEqual(type(node.content), unicode)

    def test_wrong_path(self):
        # There is 'setup.py' in the root dir but not there:
        path = 'foo/bar/setup.py'
        tip = self.repo.get_changeset()
        self.assertRaises(VCSError, tip.get_node, path)

    def test_author_email(self):
        self.assertEqual('marcin@python-blog.com',
          self.repo.get_changeset('c1214f7e79e02fc37156ff215cd71275450cffc3')\
          .author_email)
        self.assertEqual('lukasz.balcerzak@python-center.pl',
          self.repo.get_changeset('ff7ca51e58c505fec0dd2491de52c622bb7a806b')\
          .author_email)
        self.assertEqual('none@none',
          self.repo.get_changeset('8430a588b43b5d6da365400117c89400326e7992')\
          .author_email)

    def test_author_username(self):
        self.assertEqual('Marcin Kuzminski',
          self.repo.get_changeset('c1214f7e79e02fc37156ff215cd71275450cffc3')\
          .author_name)
        self.assertEqual('Lukasz Balcerzak',
          self.repo.get_changeset('ff7ca51e58c505fec0dd2491de52c622bb7a806b')\
          .author_name)
        self.assertEqual('marcink',
          self.repo.get_changeset('8430a588b43b5d6da365400117c89400326e7992')\
          .author_name)


class GitSpecificTest(unittest.TestCase):

    def test_error_is_raised_for_added_if_diff_name_status_is_wrong(self):
        repo = mock.MagicMock()
        changeset = GitChangeset(repo, 'foobar')
        changeset._diff_name_status = 'foobar'
        with self.assertRaises(VCSError):
            changeset.added

    def test_error_is_raised_for_changed_if_diff_name_status_is_wrong(self):
        repo = mock.MagicMock()
        changeset = GitChangeset(repo, 'foobar')
        changeset._diff_name_status = 'foobar'
        with self.assertRaises(VCSError):
            changeset.added

    def test_error_is_raised_for_removed_if_diff_name_status_is_wrong(self):
        repo = mock.MagicMock()
        changeset = GitChangeset(repo, 'foobar')
        changeset._diff_name_status = 'foobar'
        with self.assertRaises(VCSError):
            changeset.added


class GitSpecificWithRepoTest(BackendTestMixin, unittest.TestCase):
    backend_alias = 'git'

    @classmethod
    def _get_commits(cls):
        return [
            {
                'message': 'Initial',
                'author': 'Joe Doe <joe.doe@example.com>',
                'date': datetime.datetime(2010, 1, 1, 20),
                'added': [
                    FileNode('foobar/static/js/admin/base.js', content='base'),
                    FileNode('foobar/static/admin', content='admin',
                        mode=0120000), # this is a link
                    FileNode('foo', content='foo'),
                ],
            },
            {
                'message': 'Second',
                'author': 'Joe Doe <joe.doe@example.com>',
                'date': datetime.datetime(2010, 1, 1, 22),
                'added': [
                    FileNode('foo2', content='foo2'),
                ],
            },
        ]

    def test_paths_slow_traversing(self):
        cs = self.repo.get_changeset()
        self.assertEqual(cs.get_node('foobar').get_node('static').get_node('js')
            .get_node('admin').get_node('base.js').content, 'base')

    def test_paths_fast_traversing(self):
        cs = self.repo.get_changeset()
        self.assertEqual(cs.get_node('foobar/static/js/admin/base.js').content,
            'base')

    def test_workdir_get_branch(self):
        self.repo.run_git_command('checkout -b production')
        # Regression test: one of following would fail if we don't check
        # .git/HEAD file
        self.repo.run_git_command('checkout production')
        self.assertEqual(self.repo.workdir.get_branch(), 'production')
        self.repo.run_git_command('checkout master')
        self.assertEqual(self.repo.workdir.get_branch(), 'master')

    def test_get_diff_runs_git_command_with_hashes(self):
        self.repo.run_git_command = mock.Mock(return_value=['', ''])
        self.repo.get_diff(0, 1)
        self.repo.run_git_command.assert_called_once_with(
          'diff -U%s --full-index --binary -p -M --abbrev=40 %s %s' %
            (3, self.repo._get_revision(0), self.repo._get_revision(1)))

    def test_get_diff_runs_git_command_with_str_hashes(self):
        self.repo.run_git_command = mock.Mock(return_value=['', ''])
        self.repo.get_diff(self.repo.EMPTY_CHANGESET, 1)
        self.repo.run_git_command.assert_called_once_with(
            'show -U%s --full-index --binary -p -M --abbrev=40 %s' %
            (3, self.repo._get_revision(1)))

    def test_get_diff_runs_git_command_with_path_if_its_given(self):
        self.repo.run_git_command = mock.Mock(return_value=['', ''])
        self.repo.get_diff(0, 1, 'foo')
        self.repo.run_git_command.assert_called_once_with(
          'diff -U%s --full-index --binary -p -M --abbrev=40 %s %s -- "foo"'
            % (3, self.repo._get_revision(0), self.repo._get_revision(1)))


class GitRegressionTest(BackendTestMixin, unittest.TestCase):
    backend_alias = 'git'

    @classmethod
    def _get_commits(cls):
        return [
            {
                'message': 'Initial',
                'author': 'Joe Doe <joe.doe@example.com>',
                'date': datetime.datetime(2010, 1, 1, 20),
                'added': [
                    FileNode('bot/__init__.py', content='base'),
                    FileNode('bot/templates/404.html', content='base'),
                    FileNode('bot/templates/500.html', content='base'),
                ],
            },
            {
                'message': 'Second',
                'author': 'Joe Doe <joe.doe@example.com>',
                'date': datetime.datetime(2010, 1, 1, 22),
                'added': [
                    FileNode('bot/build/migrations/1.py', content='foo2'),
                    FileNode('bot/build/migrations/2.py', content='foo2'),
                    FileNode('bot/build/static/templates/f.html', content='foo2'),
                    FileNode('bot/build/static/templates/f1.html', content='foo2'),
                    FileNode('bot/build/templates/err.html', content='foo2'),
                    FileNode('bot/build/templates/err2.html', content='foo2'),
                ],
            },
        ]

    def test_similar_paths(self):
        cs = self.repo.get_changeset()
        paths = lambda *n:[x.path for x in n]
        self.assertEqual(paths(*cs.get_nodes('bot')), ['bot/build', 'bot/templates', 'bot/__init__.py'])
        self.assertEqual(paths(*cs.get_nodes('bot/build')), ['bot/build/migrations', 'bot/build/static', 'bot/build/templates'])
        self.assertEqual(paths(*cs.get_nodes('bot/build/static')), ['bot/build/static/templates'])
        # this get_nodes below causes troubles !
        self.assertEqual(paths(*cs.get_nodes('bot/build/static/templates')), ['bot/build/static/templates/f.html', 'bot/build/static/templates/f1.html'])
        self.assertEqual(paths(*cs.get_nodes('bot/build/templates')), ['bot/build/templates/err.html', 'bot/build/templates/err2.html'])
        self.assertEqual(paths(*cs.get_nodes('bot/templates/')), ['bot/templates/404.html', 'bot/templates/500.html'])

if __name__ == '__main__':
    unittest.main()
