BUG: fix multiple issues with directory and json types

odo/backends/json.py

@@ -99,7 +99,10 @@ def discover_jsonlines(j, n=10, encoding='utf-8', **kwargs):
 
 @convert.register(list, (JSON, Temp(JSON)))
 def json_to_list(j, dshape=None, **kwargs):
-    return json_load(j.path, **kwargs)
+    result = json_load(j.path, **kwargs)
+    if not isinstance(result, list):
+        result = [result]
+    return result
 
 
 @convert.register(Iterator, (JSONLines, Temp(JSONLines)))
@@ -138,9 +141,10 @@ def json_load(path, encoding='utf-8', **kwargs):
         f = open(path)
         s = f.read()
 
-    data = json.loads(s)
-
-    f.close()
+    try:
+        data = json.loads(s)
+    finally:
+        f.close()
 
     return data
 

odo/backends/tests/test_json.py

@@ -105,6 +105,11 @@ def test_convert_json_list():
         j = JSON(fn)
         assert convert(list, j) == dat
 
+    non_list_data ={'a': 1}
+    with json_file(non_list_data) as fn:
+        j = JSON(fn)
+        assert convert(list, j) == [non_list_data]
+
 
 def test_convert_jsonlines():
     with jsonlines_file(dat) as fn:

odo/directory.py

@@ -1,12 +1,15 @@
 from __future__ import absolute_import, division, print_function
 
 from glob import glob
+import os
+import re
+
+from datashape import discover, var
+from toolz import memoize, first
+
 from .chunks import Chunks, chunks
 from .resource import resource
 from .utils import copydoc
-from toolz import memoize, first
-from datashape import discover, var
-import os
 
 
 class _Directory(Chunks):
@@ -25,29 +28,42 @@ class _Directory(Chunks):
 
 
     """
+    @staticmethod
+    def container(uri):
+        raise NotImplementedError('overridden by Directory(cls) types')
+
     def __init__(self, path, **kwargs):
         self.path = path
         self.kwargs = kwargs
 
     def __iter__(self):
-        return (resource(os.path.join(self.path, fn), **self.kwargs)
-                    for fn in sorted(os.listdir(self.path)))
+        return (
+            self.container(
+                os.path.join(self.path, fn),
+                **self.kwargs
+            )
+            for fn in sorted(os.listdir(self.path))
+        )
 
 
 @memoize
 @copydoc(_Directory)
 def Directory(cls):
-    """ Parametrized DirectoryClass """
-    return type('Directory(%s)' % cls.__name__, (_Directory, chunks(cls)), {})
+    """Parametrized Directory class.
+    """
+    return type(
+        'Directory(%s)' % cls.__name__,
+        (_Directory, chunks(cls)),
+        {'container': cls},
+    )
+
 
+re_path_sep = re.escape(os.path.sep)
 
-re_path_sep = os.path.sep
-if re_path_sep == '\\':
-    re_path_sep = '\\\\'
 
 @discover.register(_Directory)
-def discover_Directory(c, **kwargs):
-    return var * discover(first(c)).subshape[0]
+def discover_directory(c, **kwargs):
+    return var * discover(first(c)).measure
 
 
 @resource.register('.+' + re_path_sep + '\*\..+', priority=15)