Removes unused functions and test bag application to iterables.

tests/structs/test_bags.py

@@ -1,11 +1,11 @@
-from unittest.mock import Mock
 import pickle
+from unittest.mock import Mock
 
 from bonobo import Bag
 from bonobo.constants import INHERIT_INPUT
 from bonobo.structs import Token
 
-args = ('foo', 'bar', )
+args = ('foo', 'bar',)
 kwargs = dict(acme='corp')
 
 
@@ -34,29 +34,29 @@ def test_inherit():
     bag3 = bag.extend('c', c=3)
     bag4 = Bag('d', d=4)
 
-    assert bag.args == ('a', )
+    assert bag.args == ('a',)
     assert bag.kwargs == {'a': 1}
     assert bag.flags is ()
 
-    assert bag2.args == ('a', 'b', )
+    assert bag2.args == ('a', 'b',)
     assert bag2.kwargs == {'a': 1, 'b': 2}
     assert INHERIT_INPUT in bag2.flags
 
-    assert bag3.args == ('a', 'c', )
+    assert bag3.args == ('a', 'c',)
     assert bag3.kwargs == {'a': 1, 'c': 3}
     assert bag3.flags is ()
 
-    assert bag4.args == ('d', )
+    assert bag4.args == ('d',)
     assert bag4.kwargs == {'d': 4}
     assert bag4.flags is ()
 
     bag4.set_parent(bag)
-    assert bag4.args == ('a', 'd', )
+    assert bag4.args == ('a', 'd',)
     assert bag4.kwargs == {'a': 1, 'd': 4}
     assert bag4.flags is ()
 
     bag4.set_parent(bag3)
-    assert bag4.args == ('a', 'c', 'd', )
+    assert bag4.args == ('a', 'c', 'd',)
     assert bag4.kwargs == {'a': 1, 'c': 3, 'd': 4}
     assert bag4.flags is ()
 
@@ -87,3 +87,11 @@ def test_eq_operator():
 def test_repr():
     bag = Bag('a', a=1)
     assert repr(bag) == "<Bag ('a', a=1)>"
+
+
+def test_iterator():
+    bag = Bag()
+    assert list(bag.apply([1, 2, 3])) == [1, 2, 3]
+    assert list(bag.apply((1, 2, 3))) == [1, 2, 3]
+    assert list(bag.apply(range(5))) == [0, 1, 2, 3, 4]
+    assert list(bag.apply('azerty')) == ['a', 'z', 'e', 'r', 't', 'y']