def test_should_return_true_if_there_is_no_backups(self, _):
# given
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertTrue(result, "ShouldBackupPredicate should return TRUE "
"if there is no backups")
def test_should_return_false_if_table_is_external_or_view_type(self, _):
# given
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertFalse(result, "ShouldBackupPredicate should return FALSE "
"if object is table or external type")
def test_should_return_false_if_table_not_exist_anymore(self, _):
# given
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertFalse(result, "ShouldBackupPredicate should return FALSE "
"if table not exists")
def test_should_return_false_if_schema_is_not_defined(self, _):
# given
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertFalse(result, "ShouldBackupPredicate should return FALSE "
"if table has no schema")
def test_should_return_true_if_table_was_changed_after_last_backup(
self, _):
# given
backup = Backup(parent=self.table.key,
last_modified=datetime(2016, 11, 13, 15, 00))
backup.put()
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertTrue(
result, "ShouldBackupPredicate should return TRUE "
"if table was changed after last backup")
def test_should_return_false_if_table_was_changed_before_last_backup(
self, _1, _2): # nopep8 pylint: disable=C0301
# given
backup = Backup(parent=self.table.key,
last_modified=datetime(2016, 11, 13, 15, 00),
numBytes=123)
backup.put()
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertFalse(
result, "ShouldBackupPredicate should return FALSE "
"if table was changed before "
"last backup was made")
def test_should_return_true_if_changed_table_is_empty_and_last_backup_is_also_empty(
self, _1, _2): # nopep8 pylint: disable=C0301
# given
backup = Backup(parent=self.table.key,
last_modified=datetime(2016, 11, 13, 15, 00),
numBytes=0)
backup.put()
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertTrue(
result, "ShouldBackupPredicate should return True "
"if table was changed after last backup was made,"
"but source table is empty and bbq has also empty last backup")
def test_should_return_true_if_table_was_changed_before_last_backup_but_table_size_is_different(
self, _1, _2): # nopep8 pylint: disable=C0301
# given
backup = Backup(parent=self.table.key,
last_modified=datetime(2016, 11, 13, 15, 00),
numBytes=123)
backup.put()
predicate = DefaultBackupPredicate()
# when
result = predicate.test(self.big_query_table_metadata, self.table)
# then
self.assertTrue(
result, "ShouldBackupPredicate should return TRUE "
"if table was changed before "
"last backup was made but "
"backup has different size than source table")
def __init__(self,
table_reference,
big_query,
big_query_table_metadata,
should_backup_predicate=DefaultBackupPredicate()):
self.project_id = table_reference.get_project_id()
self.dataset_id = table_reference.get_dataset_id()
self.table_id = table_reference.get_table_id()
self.partition_id = table_reference.get_partition_id()
self.big_query = big_query
self.big_query_table_metadata = big_query_table_metadata
self.should_backup_predicate = should_backup_predicate
self.now = None