def test_functor_2nd_low(self):
seq = Seq(1, 2, 3, 4, 5)
def f(x):
return x + 1
def g(x):
return x * 2
self.assertEqual(seq.map(lambda x: f(g(x))), seq.map(g).map(f))
def test_functor_1st_low(self):
seq = Seq(1, 2, 3, 4, 5)
def identity(x):
return x
self.assertEqual(seq.map(identity), identity(seq))
def test_applicative_1st_low(self):
seq = Seq(1, 2, 3, 4, 5)
def f(x):
return x + 1
self.assertEqual(seq.ap(Seq(f)), seq.map(f))