import pytest
from utils import *
import importlib
import sys

class Test_Cents:
    def test_zeros(self):
        assert cents("0") == 0
        assert cents("0.") == 0
        assert cents("00.") == 0
        assert cents("00") == 0
        assert cents("0.0") == 0
        assert cents("00.0") == 0
        assert cents("0.00") == 0
        assert cents("00.00") == 0
        assert cents(".0") == 0
        assert cents(".00") == 0

    def test_less_than_dollar(self):
        assert cents("0.99") == 99
        assert cents("0.9") == 90
        assert cents("0.90") == 90
        assert cents("0.02") == 2
        assert cents(".99") == 99
        assert cents(".9") == 90
        assert cents(".90") == 90
        assert cents(".02") == 2

    def test_integral(self):
        assert cents("1") == 100
        assert cents("3") == 300
        assert cents("25") == 2500
        assert cents("2.0") == 200
        assert cents("2.") == 200
        assert cents("12.") == 1200
        assert cents("2.00") == 200

    def test_more_than_dollar(self):
        assert cents("2.99") == 299
        assert cents("2.90") == 290
        assert cents("2.9") == 290
        assert cents("1.75") == 175
        assert cents("64.75") == 6475
        assert cents("64.05") == 6405
        assert cents("64.1") == 6410

class Test_Demo:
    def reload(self):
        global DEMO
        importlib.reload(sys.modules['utils'])
        from utils import DEMO

    def test_empty(self):
        sys.argv = ["name.py"]
        self.reload()
        assert DEMO == False

    def test_bad(self):
        sys.argv = ["name.py", "gmainus"]
        self.reload()
        assert DEMO == False

    def test_good(self):
        sys.argv = ["name.py", "demo"]
        self.reload()
        assert DEMO == True

    def test_mult_bad(self):
        sys.argv = ["name.py", "gmainus", "hdemo"]
        self.reload()
        assert DEMO == False

    def test_mult_good(self):
        sys.argv = ["name.py", "stupid", "demo"]
        self.reload()
        assert DEMO == True