def test_error_change_radius_lt_zero(self):
"""C-15. Verify error when changing radius < 0."""
circle = Circle()
with self.assertRaises(ValueError):
circle.radius = -1
def test_area_change(self):
"""C-8. Verify area changes correctly when radius changes."""
circle = Circle(Point(1, 2), 2)
circle.radius = 4
expected = 50.26548245743669
self.assertEqual(circle.area, expected)
def test_diameter_changes(self):
"""C-13. Verify diameter changes works."""
circle = Circle(center=Point(4, 5), radius=3)
circle.radius = 5
expected = 10
self.assertEqual(circle.diameter, expected)
def test_radius_change(self):
"""C-7. Verify radius attribute change works."""
circle = Circle()
circle.radius = 3
expected = 3
self.assertEqual(circle.radius, expected)
def test_change_negative_radius(self):
"""C-15. Verify error when radius < 0."""
circle = Circle(center=Point(2, 3), radius=2)
with self.assertRaises(ValueError):
circle.radius = -2
def test_area_changed(self):
"""C-8. Verify area changes correctly when radius changes."""
expected = 19.634954084936208
circle = Circle(radius=2)
circle.radius = 2.5
self.assertEqual(circle.area, expected)
def test_change_radius(self):
"""C-7. Verify radius attribute change works."""
expected = ((2, 3), 1.5)
circle = Circle(center=Point(2, 3))
circle.radius = 1.5
self.assertEqual(circle_data(circle), expected)
def test_change_radius(self):
"""C-7. Verify radius attribute change works."""
expected = 4
circle = Circle(Point(1, 2), 3)
circle.radius = 4
self.assertEqual(circle.radius, expected)
