def test_maybe_monoid_just_append_nothing(self):
m = Just("Python")
self.assertEquals(
m.append(Nothing()),
m
)
def test_maybe_monoid_just_append_just(self):
m = Just("Python")
n = Just(" rocks!")
self.assertEquals(
m.append(n),
Just("Python rocks!")
)
def test_maybe_monoid_just_append_just(self):
m = Just("Python")
n = Just(" rocks!")
self.assertEquals(m.append(n), Just("Python rocks!"))
def test_maybe_monoid_just_append_nothing(self):
m = Just("Python")
self.assertEquals(m.append(Nothing()), m)
