Attempt to refactor a bit of context, new count transform that counts the calls, new bonobo.structs package with basic data structures, removal of blessings.

tests/structs/test_bags.py

@@ -0,0 +1,64 @@
+from mock import Mock
+
+from bonobo import Bag
+from bonobo.constants import INHERIT_INPUT
+
+args = ('foo', 'bar',)
+kwargs = dict(acme='corp')
+
+
+def test_basic():
+    my_callable1 = Mock()
+    my_callable2 = Mock()
+    bag = Bag(*args, **kwargs)
+
+    assert not my_callable1.called
+    result1 = bag.apply(my_callable1)
+    assert my_callable1.called and result1 is my_callable1.return_value
+
+    assert not my_callable2.called
+    result2 = bag.apply(my_callable2)
+    assert my_callable2.called and result2 is my_callable2.return_value
+
+    assert result1 is not result2
+
+    my_callable1.assert_called_once_with(*args, **kwargs)
+    my_callable2.assert_called_once_with(*args, **kwargs)
+
+
+def test_inherit():
+    bag = Bag('a', a=1)
+    bag2 = Bag.inherit('b', b=2, _parent=bag)
+    bag3 = bag.extend('c', c=3)
+    bag4 = Bag('d', d=4)
+
+    assert bag.args == ('a',)
+    assert bag.kwargs == {'a': 1}
+    assert bag.flags is ()
+
+    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.kwargs == {'a': 1, 'c': 3}
+    assert bag3.flags is ()
+
+    assert bag4.args == ('d',)
+    assert bag4.kwargs == {'d': 4}
+    assert bag4.flags is ()
+
+    bag4.set_parent(bag)
+    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.kwargs == {'a': 1, 'c': 3, 'd': 4}
+    assert bag4.flags is ()
+
+
+def test_repr():
+    bag = Bag('a', a=1)
+    assert repr(bag) == "<Bag ('a', a=1)>"