import unittest
from src.export.strategies.csv_export import csv_export
from src.export.exporter import exporter
from src.models.measurement_unit_model import measurement_unit_model

from src.storage.storage import storage


#
# Набор автотестов для проверки работы экспорта
# #
class test_export(unittest.TestCase):
    def test_csv_munits(self):
        # Подготовка
        strg = storage()

        munit1 = measurement_unit_model("g")
        munit2 = measurement_unit_model("kg")
        munit3 = measurement_unit_model("t")

        strg.data[strg.measurement_unit_key()] = [munit1, munit2, munit3]

        exp = exporter(csv_export())

        expected = f"base_coefficient;base_measurement_unit;id;name\n{munit1.base_coefficient};{str(munit1.base_measurement_unit)};{munit1.id};{munit1.name}\n{munit2.base_coefficient};{str(munit2.base_measurement_unit)};{munit2.id};{munit2.name}\n{munit3.base_coefficient};{str(munit3.base_measurement_unit)};{munit3.id};{munit3.name}"

        # Действие
        csv = exp.export_by_key(strg.measurement_unit_key())

        # Проверки
        assert isinstance(csv, str)
        assert csv == expected