** now considers root element part of iteration (#250)

* ** now considers root element part of iteration

* fix py2 test

Author: kurtbrose

glom/core.py

@@ -1602,12 +1602,13 @@ def _t_eval(target, _t, scope):
                 # TODO: so many try/except -- could scope[TargetRegistry] stuff be cached on type?
                 _extend_children(nxt, cur, get_handler)
             elif op == 'X':
-                sofar = {id(cur)}
+                sofar = set()
                 _extend_children(nxt, cur, get_handler)
                 for item in nxt:
                     if id(item) not in sofar:
                         sofar.add(id(item))
                         _extend_children(nxt, item, get_handler)
+                nxt.insert(0, cur)
             # handle the rest of the t_path in recursive calls
             cur = []
             todo = TType()

glom/test/test_path_and_t.py

@@ -229,17 +229,18 @@ def test_path_star():
     # multi-paths eat errors
     assert glom(val, Path('a', T.__star__(), T.b)) == []
     val = [[[1]]]
-    assert glom(val, '**') == [ [[1]], [1], 1]
-    val = {'a': [{'b': [{'c': 1}, {'c': 2}, {'d': {'c': 3}}]}]}
-    assert glom(val, '**.c') == [1, 2, 3]
+    assert glom(val, '**') == [val, [[1]], [1], 1]
+    val = {'a': [{'b': [{'c': 1}, {'c': 2}, {'d': {'c': 3}}]}], 'c': 4}
+    assert glom(val, '**.c') == [4, 1, 2, 3]
     assert glom(val, 'a.**.c') == [1, 2, 3]
     assert glom(val, T['a'].__starstar__()['c']) == [1, 2, 3]
     assert glom(val, 'a.*.b.*.c') == [[1, 2]]
     # errors
     class ErrDict(dict):
         def __getitem__(key): 1/0
     assert ErrDict(val).keys()  # it will try to iterate
-    assert glom(ErrDict(val), '**') == []
+    assert glom(ErrDict(val), '**') == [val]
+    assert glom(ErrDict(val), '*') == []
     # object access
     class A:
         def __init__(self):
@@ -248,10 +249,10 @@ def __init__(self):
     val = A()
     if core.PY2:  # compensate for unpredictable attribute order
         assert sorted(glom(val, '*')) == sorted([1, {'c': 2}])
-        assert sorted(glom(val, '**')) == sorted([1, {'c': 2}, 2])
+        assert sorted(glom(val, '**')) == sorted([val, 1, {'c': 2}, 2])
     else:
         assert glom(val, '*') == [1, {'c': 2}]
-        assert glom(val, '**') == [1, {'c': 2}, 2]
+        assert glom(val, '**') == [val, 1, {'c': 2}, 2]
     core.PATH_STAR = False