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# Copyright (C) 2012-2014 Codethink Limited
#
# 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; version 2 of the License.
#
# 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.
import logging
import os
import unittest
import fs.tempfs
import cliapp
import morphlib
class CachedRepoTests(unittest.TestCase):
EXAMPLE_MORPH = '''{
"name": "foo",
"kind": "chunk"
}'''
known_commit = 'a4da32f5a81c8bc6d660404724cedc3bc0914a75'
bad_sha1_known_to_rev_parse = 'cafecafecafecafecafecafecafecafecafecafe'
def rev_parse(self, ref):
output = {
self.bad_sha1_known_to_rev_parse: self.bad_sha1_known_to_rev_parse,
'a4da32f5a81c8bc6d660404724cedc3bc0914a75':
'a4da32f5a81c8bc6d660404724cedc3bc0914a75',
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9':
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
'master': 'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
'baserock/morph': '8b780e2e6f102fcf400ff973396566d36d730501'
}
try:
return output[ref]
except KeyError:
raise cliapp.AppException('git rev-parse --verify %s' % ref)
def show_tree_hash(self, absref):
output = {
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9':
'eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee',
'8b780e2e6f102fcf400ff973396566d36d730501':
'ffffffffffffffffffffffffffffffffffffffff',
'a4da32f5a81c8bc6d660404724cedc3bc0914a75':
'dddddddddddddddddddddddddddddddddddddddd'
}
try:
return output[absref]
except KeyError:
raise cliapp.AppException('git log -1 --format=format:%%T %s' %
absref)
def cat_file(self, ref, filename):
output = {
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9:foo.morph':
self.EXAMPLE_MORPH
}
try:
return output['%s:%s' % (ref, filename)]
except KeyError:
raise cliapp.AppException(
'git cat-file blob %s:%s' % (ref, filename))
def copy_repository(self, source_dir, target_dir):
if target_dir.endswith('failed-checkout'):
raise morphlib.cachedrepo.CopyError(self.repo, target_dir)
def checkout_ref(self, ref, target_dir):
if ref == 'a4da32f5a81c8bc6d660404724cedc3bc0914a75':
raise morphlib.cachedrepo.CloneError(self.repo, target_dir)
elif ref == '079bbfd447c8534e464ce5d40b80114c2022ebf4':
raise morphlib.cachedrepo.CheckoutError(self.repo, ref, target_dir)
else:
with open(os.path.join(target_dir, 'foo.morph'), 'w') as f:
f.write('contents of foo.morph')
def ls_tree(self, ref):
output = {
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9':
['foo.morph']
}
try:
return output[ref]
except KeyError:
raise cliapp.AppException('git ls-tree --name-only %s' % (ref))
def clone_into(self, target_dir, ref):
if target_dir.endswith('failed-checkout'):
raise morphlib.cachedrepo.CloneError(self.repo, target_dir)
self.clone_target = target_dir
self.clone_ref = ref
def update_successfully(self):
pass
def update_with_failure(self):
raise cliapp.AppException('git remote update origin')
def setUp(self):
self.repo_name = 'foo'
self.repo_url = 'git://foo.bar/foo.git'
self.repo_path = '/tmp/foo'
self.repo = morphlib.cachedrepo.CachedRepo(
object(), self.repo_name, self.repo_url, self.repo_path)
self.repo._rev_parse = self.rev_parse
self.repo._show_tree_hash = self.show_tree_hash
self.repo._cat_file = self.cat_file
self.repo._copy_repository = self.copy_repository
self.repo._checkout_ref = self.checkout_ref
self.repo._ls_tree = self.ls_tree
self.repo._clone_into = self.clone_into
self.tempfs = fs.tempfs.TempFS()
def test_constructor_sets_name_and_url_and_path(self):
self.assertEqual(self.repo.original_name, self.repo_name)
self.assertEqual(self.repo.url, self.repo_url)
self.assertEqual(self.repo.path, self.repo_path)
def test_ref_exists(self):
self.assertEqual(self.repo.ref_exists('master'), True)
def test_ref_does_not_exist(self):
self.assertEqual(self.repo.ref_exists('non-existant-ref'), False)
def test_resolve_named_ref_master(self):
sha1, tree = self.repo.resolve_ref('master')
self.assertEqual(sha1, 'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9')
self.assertEqual(tree, 'eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee')
def test_resolve_named_ref_baserock_morph(self):
sha1, tree = self.repo.resolve_ref('baserock/morph')
self.assertEqual(sha1, '8b780e2e6f102fcf400ff973396566d36d730501')
self.assertEqual(tree, 'ffffffffffffffffffffffffffffffffffffffff')
def test_fail_resolving_invalid_named_ref(self):
self.assertRaises(morphlib.cachedrepo.InvalidReferenceError,
self.repo.resolve_ref, 'foo/bar')
def test_resolve_sha1_ref(self):
sha1, tree = self.repo.resolve_ref(
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9')
self.assertEqual(sha1, 'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9')
self.assertEqual(tree, 'eeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeee')
def test_fail_resolving_an_invalid_sha1_ref(self):
self.assertRaises(morphlib.cachedrepo.InvalidReferenceError,
self.repo.resolve_ref,
self.bad_sha1_known_to_rev_parse)
def test_cat_existing_file_in_existing_ref(self):
data = self.repo.cat('e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
'foo.morph')
self.assertEqual(data, self.EXAMPLE_MORPH)
def test_fail_cat_file_in_invalid_ref(self):
self.assertRaises(
morphlib.cachedrepo.InvalidReferenceError, self.repo.cat,
'079bbfd447c8534e464ce5d40b80114c2022ebf4',
'doesnt-matter-whether-this-file-exists')
def test_fail_cat_non_existent_file_in_existing_ref(self):
self.assertRaises(IOError, self.repo.cat,
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
'file-that-does-not-exist')
def test_fail_cat_non_existent_file_in_invalid_ref(self):
self.assertRaises(
morphlib.cachedrepo.InvalidReferenceError, self.repo.cat,
'079bbfd447c8534e464ce5d40b80114c2022ebf4',
'file-that-does-not-exist')
def test_fail_because_cat_in_named_ref_is_not_allowed(self):
self.assertRaises(morphlib.cachedrepo.UnresolvedNamedReferenceError,
self.repo.cat, 'master', 'doesnt-matter')
def test_fail_clone_checkout_into_existing_directory(self):
self.assertRaises(morphlib.cachedrepo.CheckoutDirectoryExistsError,
self.repo.clone_checkout,
'e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
self.tempfs.root_path)
def test_fail_checkout_due_to_clone_error(self):
self.assertRaises(
morphlib.cachedrepo.CloneError, self.repo.clone_checkout,
'a4da32f5a81c8bc6d660404724cedc3bc0914a75',
self.tempfs.getsyspath('failed-checkout'))
def test_fail_checkout_due_to_copy_error(self):
self.assertRaises(morphlib.cachedrepo.CopyError, self.repo.checkout,
'a4da32f5a81c8bc6d660404724cedc3bc0914a75',
self.tempfs.getsyspath('failed-checkout'))
def test_fail_checkout_from_invalid_ref(self):
self.assertRaises(
morphlib.cachedrepo.CheckoutError, self.repo.checkout,
'079bbfd447c8534e464ce5d40b80114c2022ebf4',
self.tempfs.getsyspath('checkout-from-invalid-ref'))
def test_checkout_from_existing_ref_into_new_directory(self):
unpack_dir = self.tempfs.getsyspath('unpack-dir')
self.repo.checkout('e28a23812eadf2fce6583b8819b9c5dbd36b9fb9',
unpack_dir)
self.assertTrue(os.path.exists(unpack_dir))
morph_filename = os.path.join(unpack_dir, 'foo.morph')
self.assertTrue(os.path.exists(morph_filename))
def test_ls_tree_in_existing_ref(self):
data = self.repo.ls_tree('e28a23812eadf2fce6583b8819b9c5dbd36b9fb9')
self.assertEqual(data, ['foo.morph'])
def test_fail_ls_tree_in_invalid_ref(self):
self.assertRaises(
morphlib.cachedrepo.InvalidReferenceError, self.repo.ls_tree,
'079bbfd447c8534e464ce5d40b80114c2022ebf4')
def test_fail_because_ls_tree_in_named_ref_is_not_allowed(self):
self.assertRaises(morphlib.cachedrepo.UnresolvedNamedReferenceError,
self.repo.ls_tree, 'master')
def test_successful_update(self):
self.repo._update = self.update_successfully
self.repo.update()
def test_failing_update(self):
self.repo._update = self.update_with_failure
self.assertRaises(morphlib.cachedrepo.UpdateError, self.repo.update)
def test_no_update_if_local(self):
self.repo = morphlib.cachedrepo.CachedRepo(
object(), 'local:repo', 'file:///local/repo/', '/local/repo/')
self.repo._update = self.update_with_failure
self.assertFalse(self.repo.requires_update_for_ref(self.known_commit))
self.repo.update()
def test_clone_checkout(self):
self.repo.clone_checkout('master', '/.DOES_NOT_EXIST')
self.assertEqual(self.clone_target, '/.DOES_NOT_EXIST')
self.assertEqual(self.clone_ref, 'master')
def test_no_need_to_update_repo_for_existing_sha1(self):
# If the SHA1 is present locally already there's no need to update.
# If it's a named ref then it might have changed in the remote, so we
# must still update.
self.assertFalse(self.repo.requires_update_for_ref(self.known_commit))
self.assertTrue(self.repo.requires_update_for_ref('named_ref'))
def test_no_need_to_update_repo_if_already_updated(self):
self.repo._update = self.update_successfully
self.assertTrue(self.repo.requires_update_for_ref('named_ref'))
self.repo.update()
self.assertFalse(self.repo.requires_update_for_ref('named_ref'))
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