def inner(table_name: str, repo: Dolt) -> DoltTableUpdate:
if branch and branch != repo.log():
repo.checkout(branch)
query_commit = commit_ref or list(repo.log().keys())[0]
table = get_table_metadata(repo.engine, table_name)
from_commit, to_commit = get_from_commit_to_commit(repo, query_commit)
pks_to_drop = get_dropped_pks(repo.engine, table, from_commit,
to_commit)
result = _read_from_dolt_history(repo.engine, table, query_commit)
return pks_to_drop, result
def _test_dolt_table_reader_helper(repo: Dolt,
table: Table,
build_table_reader: Callable[[str], Callable[[str, Dolt], DoltTableUpdate]],
get_expected: Callable[[int], Tuple[List[dict], List[dict]]]):
commits = list(repo.log().keys())
update_to_commit = {
FIRST_UPDATE: commits[4],
SECOND_UPDATE: commits[3],
THIRD_UPDATE: commits[2],
FOURTH_UPDATE: commits[1],
FIFTH_UPDATE: commits[0]
}
for update_num, commit in update_to_commit.items():
logger.info('comparison for commit/update_num {}/{}'.format(commit, update_num))
dropped_pks, dolt_data = build_table_reader(commit)(str(table.name), repo)
expected_dropped_pks, expected_data = get_expected(update_num)
assert expected_dropped_pks == dropped_pks
assert_rows_equal(expected_data, list(dolt_data))
def get_from_commit_to_commit(repo: Dolt,
commit_ref: str = None) -> Tuple[str, str]:
"""
Given a repo and commit it returns the commit and its parent, if no commit is provided the head and the parent of
head are returned.
:param repo:
:param commit_ref:
:return:
"""
commits = list(repo.log().keys())
commit_ref_index = None
if not commit_ref:
commit_ref_index = 0
else:
for i, commit in enumerate(commits):
if commit == commit_ref:
commit_ref_index = i
break
assert commit_ref_index is not None, 'commit_ref not found in commit index'
return commits[commit_ref_index + 1], commits[commit_ref_index]
