from unittest import IsolatedAsyncioTestCase
from unittest.mock import patch, MagicMock, AsyncMock, call

from bs4 import BeautifulSoup

from mwfin import functions


class FunctionsTestCase(IsolatedAsyncioTestCase):

    @patch.object(functions, 'ClientSession')
    async def test_soup_from_url(self, mock_session_cls):
        test_html = '<b>foo</b>'
        mock_response = MagicMock()
        mock_response.text = AsyncMock(return_value=test_html)
        mock_get_return = MagicMock()
        mock_get_return.__aenter__ = AsyncMock(return_value=mock_response)
        mock_session_obj = MagicMock()
        mock_session_obj.get = MagicMock(return_value=mock_get_return)
        mock_session_cls.return_value = mock_session_obj

        expected_output = BeautifulSoup(test_html, 'html.parser')
        output = await functions.soup_from_url('baz')
        self.assertEqual(expected_output, output)
        output = await functions.soup_from_url('baz', mock_session_obj)
        self.assertEqual(expected_output, output)

    def test_extract_end_dates(self):
        test_html = '<tr>' \
                    '<th><div> ITEM </div></th>' \
                    '<th><div> 30-SEP-2020 </div></th>' \
                    '<th><div> 31-DEC-2020 </div></th>' \
                    '<th><div> 31-MAR-2021 </div></th>' \
                    '<th><div> 30-JUN-2021 </div></th>' \
                    '<th><div> 30-SEP-2021 </div></th>' \
                    '</tr>'
        test_soup = BeautifulSoup(test_html, 'html.parser')

        expected_output = ('30-SEP-2020', '31-DEC-2020', '31-MAR-2021',
                           '30-JUN-2021', '30-SEP-2021')
        output = functions.extract_end_dates(test_soup)
        self.assertTupleEqual(expected_output, output)

    def test_find_relevant_table_rows(self):
        pass

    def test_convert_number(self):
        pass

    def test_extract_row_data(self):
        pass

    def test_extract_all_data(self):
        pass

    async def test_get_balance_sheet(self):
        pass

    async def test_get_income_statement(self):
        pass

    async def test_get_cash_flow_statement(self):
        pass

    async def test_get_company_financials(self):
        pass