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test_main.py
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249 lines (198 loc) · 8.63 KB
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import unittest
from data_diff import Database, JoinDiffer, HashDiffer
from data_diff import databases as db
from data_diff.__main__ import _get_dbs, _set_age, _get_table_differ, _get_expanded_columns, _get_threads
from data_diff.databases.mysql import MySQL
from data_diff.diff_tables import TableDiffer
from tests.common import CONN_STRINGS, get_conn, DiffTestCase
class TestGetDBS(unittest.TestCase):
def test__get_dbs(self) -> None:
db1: Database
db2: Database
db1_str: str = CONN_STRINGS[db.PostgreSQL]
db2_str: str = CONN_STRINGS[db.PostgreSQL]
# no threads and 2 threads1
db1, db2 = _get_dbs(0, db1_str, 2, db2_str, 0, False)
with db1, db2:
assert db1 == db2
assert db1.thread_count == 2
# 3 threads and 0 threads1
db1, db2 = _get_dbs(3, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 == db2
assert db1.thread_count == 3
# not interactive
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 == db2
assert not db1._interactive
# interactive
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, True)
with db1, db2:
assert db1 == db2
assert db1._interactive
db2_str: str = CONN_STRINGS[db.MySQL]
# no threads and 1 threads1 and 2 thread2
db1, db2 = _get_dbs(0, db1_str, 1, db2_str, 2, False)
with db1, db2:
assert db1 != db2
assert db1.thread_count == 1
assert db2.thread_count == 2
# 3 threads and 0 threads1 and 0 thread2
db1, db2 = _get_dbs(3, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 != db2
assert db1.thread_count == 3
assert db2.thread_count == 3
assert db1.thread_count == db2.thread_count
# not interactive
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 != db2
assert not db1._interactive
assert not db2._interactive
# interactive
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, True)
with db1, db2:
assert db1 != db2
assert db1._interactive
assert db2._interactive
def test_database_connection_failure(self) -> None:
"""Test when database connection fails."""
with self.assertRaises(Exception): # Assuming that connect() raises Exception on connection failure
_get_dbs(1, "db1_str", 0, "db2_str", 0, False)
def test_invalid_inputs(self) -> None:
"""Test invalid inputs."""
with self.assertRaises(Exception): # Assuming that connect() raises Exception on failure
_get_dbs(0, "", 0, "", 0, False) # Empty connection strings
def test_database_object(self) -> None:
"""Test returned database objects are valid and not None."""
db1_str: str = CONN_STRINGS[db.PostgreSQL]
db2_str: str = CONN_STRINGS[db.PostgreSQL]
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, False)
self.assertIsNotNone(db1)
self.assertIsNotNone(db2)
self.assertIsInstance(db1, Database)
self.assertIsInstance(db2, Database)
def test_databases_are_different(self) -> None:
"""Test separate connections for different databases."""
db1_str: str = CONN_STRINGS[db.PostgreSQL]
db2_str: str = CONN_STRINGS[db.MySQL]
db1, db2 = _get_dbs(0, db1_str, 1, db2_str, 2, False)
with db1, db2:
self.assertIsNot(db1, db2) # Check that db1 and db2 are not the same object
class TestSetAge(unittest.TestCase):
def setUp(self) -> None:
self.database: Database = get_conn(db.PostgreSQL)
def tearDown(self):
self.database.close()
def test__set_age(self):
options = {}
_set_age(options, None, None, self.database)
assert len(options) == 0
options = {}
_set_age(options, "1d", None, self.database)
assert len(options) == 1
assert options.get("max_update") is not None
options = {}
_set_age(options, None, "1d", self.database)
assert len(options) == 1
assert options.get("min_update") is not None
options = {}
_set_age(options, "1d", "1d", self.database)
assert len(options) == 2
assert options.get("max_update") is not None
assert options.get("min_update") is not None
def test__set_age_db_query_failure(self):
with self.assertRaises(Exception):
options = {}
_set_age(options, "1d", "1d", self.mock_database)
class TestGetTableDiffer(unittest.TestCase):
def test__get_table_differ(self):
db1: Database
db2: Database
db1_str: str = CONN_STRINGS[db.PostgreSQL]
db2_str: str = CONN_STRINGS[db.PostgreSQL]
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 == db2
table_differ: TableDiffer = self._get_differ("auto", db1, db2)
assert isinstance(table_differ, JoinDiffer)
table_differ: TableDiffer = self._get_differ("joindiff", db1, db2)
assert isinstance(table_differ, JoinDiffer)
table_differ: TableDiffer = self._get_differ("hashdiff", db1, db2)
assert isinstance(table_differ, HashDiffer)
db2_str: str = CONN_STRINGS[db.MySQL]
db1, db2 = _get_dbs(1, db1_str, 0, db2_str, 0, False)
with db1, db2:
assert db1 != db2
table_differ: TableDiffer = self._get_differ("auto", db1, db2)
assert isinstance(table_differ, HashDiffer)
table_differ: TableDiffer = self._get_differ("joindiff", db1, db2)
assert isinstance(table_differ, JoinDiffer)
table_differ: TableDiffer = self._get_differ("hashdiff", db1, db2)
assert isinstance(table_differ, HashDiffer)
@staticmethod
def _get_differ(algorithm, db1, db2):
return _get_table_differ(algorithm, db1, db2, False, 1, False, False, False, 1, None, None, None)
class TestGetExpandedColumns(DiffTestCase):
db_cls = MySQL
def setUp(self):
super().setUp()
def test__get_expanded_columns(self):
columns = ["user_id", "movie_id", "rating"]
kwargs = {
"db1": self.connection,
"schema1": self.src_schema,
"table1": self.table_src_name,
"db2": self.connection,
"schema2": self.dst_schema,
"table2": self.table_dst_name,
}
expanded_columns = _get_expanded_columns(columns, False, set(columns), **kwargs)
assert len(expanded_columns) == 3
assert len(set(expanded_columns) & set(columns)) == 3
def test__get_expanded_columns_case_sensitive(self):
columns = ["UserID", "MovieID", "Rating"]
kwargs = {
"db1": self.connection,
"schema1": self.src_schema,
"table1": self.table_src_name,
"db2": self.connection,
"schema2": self.dst_schema,
"table2": self.table_dst_name,
}
expanded_columns = _get_expanded_columns(columns, True, set(columns), **kwargs)
assert len(expanded_columns) == 3
assert len(set(expanded_columns) & set(columns)) == 3
class TestGetThreads(unittest.TestCase):
def test__get_threads(self):
threaded, threads = _get_threads(None, None, None)
assert threaded
assert threads == 1
threaded, threads = _get_threads(None, 2, 3)
assert threaded
assert threads == 1
threaded, threads = _get_threads("serial", None, None)
assert not threaded
assert threads == 1
with self.assertRaises(AssertionError):
_get_threads("serial", 1, 2)
threaded, threads = _get_threads("4", None, None)
assert threaded
assert threads == 4
with self.assertRaises(ValueError) as value_error:
_get_threads("auto", None, None)
assert str(value_error.exception) == "invalid literal for int() with base 10: 'auto'"
threaded, threads = _get_threads(5, None, None)
assert threaded
assert threads == 5
threaded, threads = _get_threads(6, 7, 8)
assert threaded
assert threads == 6
with self.assertRaises(ValueError) as value_error:
_get_threads(0, None, None)
assert str(value_error.exception) == "Error: threads must be >= 1"
with self.assertRaises(ValueError) as value_error:
_get_threads(-1, None, None)
assert str(value_error.exception) == "Error: threads must be >= 1"