def test_assigning_a_material():
# Given
s = MockShape()
m = Material()
m.ambient = 1
# When
s.material = m
# Then
assert s.material == m
def test_lighting_with_a_pattern_applied():
# Given
m = Material()
m.pattern = StripePattern(Color(1, 1, 1), Color(0, 0, 0))
m.ambient = 1
m.diffuse = 0
m.specular = 0
eyev = Vector(0, 0, -1)
normalv = Vector(0, 0, -1)
light = PointLight(Point(0, 0, -10), Color(1, 1, 1))
object = Sphere()
# When
c1 = m.lighting(object, light, Point(0.9, 0, 0), eyev, normalv)
c2 = m.lighting(object, light, Point(1.1, 0, 0), eyev, normalv)
# Then
assert c1 == Color(1, 1, 1)
assert c2 == Color(0, 0, 0)
def test_material_equality_with_different_materials():
m1 = Material()
m2 = Material()
m2.ambient = 1
assert m1 != m2