Python compose Examples

Example #1

File: test_maybe.py Project: impurist/pfun

 def test_composition_law(self, f: Unary, g: Unary, value):
     h = compose(f, g)
     assert Just(value).map(h) == Just(value).map(g).map(f)
     assert Nothing().map(h) == Nothing().map(g).map(f)

Example #2

 def test_composition_law(self, f, g, l):
     h = compose(f, g)
     assert l.map(h) == l.map(g).map(f)

Example #3

File: test_trampoline.py Project: suned/pfun

 def test_composition_law(self, f, g, value):
     h = compose(f, g)
     assert Done(value).map(g).map(f).run() == Done(value).map(h).run()

Example #4

 async def test_composition_law(self, f, g, value):
     h = compose(f, g)
     assert (await Done(value).map(g).map(f).run()
             ) == (await Done(value).map(h).run())

Example #5

 def test_composition_law(self, f, g, value, env):
     h = compose(f, g)
     assert (
         effect.success(value).map(h).run(env) ==
         effect.success(value).map(g).map(f).run(env)
     )

Example #6

 def test_composition_law(self, f: Unary, g: Unary, value):
     h = compose(f, g)
     assert Left(value).map(h) == Left(value).map(g).map(f)
     assert Right(value).map(h) == Right(value).map(g).map(f)