Source code for pycircle.test_circles

# test_circles.py

import unittest
from pycircle.circles import circle_area
from math import pi

class TestCircleArea(unittest.TestCase):
    def test_area(self):
        # Test areas when radius >= 0
        self.assertAlmostEqual(circle_area(1), pi)
        self.assertAlmostEqual(circle_area(0), 0)
        self.assertAlmostEqual(circle_area(2.1), pi*(2.1**2))
        
    def test_values(self):
        # Make sure value erros are raised when necessary
        self.assertRaises(ValueError, circle_area, -2)
        
    def test_types(self):
        # Make sure type errors are raised when necessary
        self.assertRaises(TypeError, circle_area, 3+5j)
        self.assertRaises(TypeError, circle_area, True)
        self.assertRaises(TypeError, circle_area, "radius")
        
if __name__ == '__main__':
    unittest.main()