def test_add_circles():
"""
testing the addition of two circle objects
"""
c1 = Circle(2)
c2 = Circle(4)
c3 = c1 + c2
assert c3.radius == 6
assert c3.diameter == 12
def test_change_d():
"""
testing changing the diameter
"""
c = Circle(4)
c.diameter = 4
assert c.radius == 2
assert c.diameter == 4
assert round(c.area, 5) == 12.56637
def test_change_d():
"""
testing changing the diameter
"""
c = Circle(4)
c.diameter = 4
assert c.radius == 2
assert c.diameter == 4
assert round(c.area, 5) == 12.56637
def test_change_r():
"""
testing changing the radius
"""
c = Circle(4)
# "setting the radius to 2:"
c.radius = 2
assert c.radius == 2
assert c.diameter == 4
assert round(c.area, 5) == 12.56637
def test_change_r():
"""
testing changing the radius
"""
c = Circle(4)
#"setting the radius to 2:"
c.radius = 2
assert c.radius == 2
assert c.diameter == 4
assert round(c.area, 5) == 12.56637
def test_basic():
c = Circle(4)
print "the radius:", c.radius
print "the diameter:", c.diameter
print "the area:", c.area
print "the repr():", repr(c)
print "the str():", str(c)
assert c.radius == 4
assert c.diameter == 8
assert round(c.area, 5) == 50.26548
def test_from_diameter():
c = Circle.from_diameter(6.0)
assert c.radius == 3.0
def test_set_area():
# trying to set the area
c = Circle(4)
with pytest.raises(AttributeError):
c.area = 12
def test_circumference():
c = Circle.circumference(3.0)
assert c == math.pi * 3.0 ** 2
def test_circumference():
c = Circle.circumference(3.0)
assert c == math.pi * 3.0 * 2
def test_from_diameter():
c = Circle.from_diameter(6.0)
assert c.radius == 3.0
def test_str():
c = Circle(5)
print str(c)
assert str(c) == 'Circle Object with radius: 5.000000'
def test_repr():
c = Circle(5)
assert repr(c) == 'Circle(5.000000)'
def test_set_area():
# trying to set the area
c = Circle(4)
with pytest.raises(AttributeError):
c.area = 12
def test_delete():
# trying to delete the diameter
c = Circle(4)
with pytest.raises(AttributeError):
del c.diameter
