"""Unit tests for snowflake_snapshot_mechanical_transactions_task."""

from unittest.mock import patch

from lib import config
from tasks.accounting_period_mechanicals.snowflake_snapshot_mech_txns import \
    snowflake_snapshot_mechanical_transactions_task

import_path = 'tasks.accounting_period_mechanicals.snowflake_snapshot_mech_txns'


@patch(f'{import_path}.RoyaltySnowflakeHook')
@patch(f'{import_path}.get_accounting_period_details')
@patch(f'{import_path}.shared_helpers')
@patch(f'{import_path}.helpers')
@patch(f'{import_path}.insert_snapshot_mechanical_transactions')
def test_snowflake_snapshot_mechanical_transactions_task_success(
    mock_template,
    mock_helpers,
    mock_shared_helpers,
    mock_get_accounting_period_details,
    mock_hook,
    mock_accounting_period_mechanicals_event,
    mock_accounting_period_mechanicals_dag_run
):
    """Test task that snapshots sales that are eligible for mechanical deductions."""
    accounting_period_id = mock_accounting_period_mechanicals_event['target_id']
    statement_period_id = \
        mock_accounting_period_mechanicals_event['statement_period_id']

    accounting_period = {
        'accounting_period_id': accounting_period_id,
        'statement_period_id': statement_period_id
    }
    sales_file_ids = [4, 5, 6]

    mock_helpers.get_event_from_params.return_value.target_id = accounting_period_id
    mock_get_accounting_period_details.return_value = accounting_period
    mock_shared_helpers.get_sales_file_ids.return_value = sales_file_ids

    mock_template.return_value.render.return_value = \
        'INSERT INTO SNAPSHOT_MECHANICAL_TRANSACTIONS'
    mock_hook.return_value.run.return_value = True

    snowflake_snapshot_mechanical_transactions_task(
        mock_accounting_period_mechanicals_dag_run
    )

    mock_helpers.get_event_from_params.assert_called_once_with(
        mock_accounting_period_mechanicals_dag_run
    )
    mock_get_accounting_period_details.assert_called_once_with(accounting_period_id)
    mock_shared_helpers.get_sales_file_ids.assert_called_once_with(accounting_period_id)
    mock_hook.assert_called_once_with(snowflake_conn_id=config.SNOWFLAKE_CONN_NAME)
    mock_template.return_value.render.assert_called_once_with(
        accounting_period_id=accounting_period_id,
        sales_file_ids=sales_file_ids,
        schema=config.OWS_ENV,
        statement_period_id=statement_period_id
    )