import unittest
import dialoguer


class TestImportVariable(unittest.TestCase):

	@classmethod
	def setUpClass(cls):
		cls.src_fil_r = dialoguer.Dialogue('test_evaluate_expression.r')

	@classmethod
	def tearDownClass(cls):
		cls.src_fil_r.close()

	def setUp(self):
		pass

	def tearDown(self):
		pass

	def test_evaluate_expression(self):
		res_1 = self.src_fil_r.evaluate_expression('sum', 1, 2)
		self.assertEqual(res_1, 3)


if __name__ == '__main__':
	unittest.main()