from unittest import TestCase
from unittest.mock import MagicMock

from pyjsparser import parse

from jasinta import interpret
import std as jasinta_std


class TestBasicAddition(TestCase):
	def setUp(self):
		self.mock_print = MagicMock()
		jasinta_std.lib["document"]["write"] = self.mock_print

	def test_interpret(self):
		s = """var a=3;
var b=1;
var c=a+b;
document.write(c);"""

		interpret(parse(s))
		self.mock_print.assert_called_with(4.0)