TST: json tests to int64 to avoid dtype issues

Author: jreback

pandas/io/json.py

@@ -268,6 +268,15 @@ def _try_convert_data(self, name, data, use_dtypes=True, convert_dates=True):
             except:
                 pass
 
+        if data.dtype == 'float':
+            
+            # coerce floats to 64
+            try:
+                data = data.astype('float64')
+                result = True
+            except:
+                pass
+
         # do't coerce 0-len data
         if len(data) and (data.dtype == 'float' or data.dtype == 'object'):
 
@@ -280,6 +289,16 @@ def _try_convert_data(self, name, data, use_dtypes=True, convert_dates=True):
             except:
                 pass
 
+        # coerce ints to 64
+        if data.dtype == 'int':
+            
+            # coerce floats to 64
+            try:
+                data = data.astype('int64')
+                result = True
+            except:
+                pass
+
         return data, result
 
     def _try_convert_to_date(self, data):

pandas/io/tests/test_json/test_pandas.py

@@ -26,7 +26,7 @@
 
 _frame = DataFrame(_seriesd)
 _frame2 = DataFrame(_seriesd, columns=['D', 'C', 'B', 'A'])
-_intframe = DataFrame(dict((k, v.astype(int))
+_intframe = DataFrame(dict((k, v.astype(np.int64))
                            for k, v in _seriesd.iteritems()))
 
 _tsframe = DataFrame(_tsd)
@@ -71,6 +71,9 @@ def _check_orient(df, orient, dtype=None, numpy=False, convert_axes=True, check_
 
             unser = unser.sort()
 
+            if dtype is False:
+                check_dtype=False
+
             if not convert_axes and df.index.dtype.type == np.datetime64:
                 unser.index = DatetimeIndex(unser.index.values.astype('i8'))
             if orient == "records":
@@ -288,7 +291,7 @@ def test_series_to_json_except(self):
 
     def test_typ(self):
 
-        s = Series(range(6), index=['a','b','c','d','e','f'])
+        s = Series(range(6), index=['a','b','c','d','e','f'], dtype='int64')
         result = read_json(s.to_json(),typ=None)
         assert_series_equal(result,s)