Add test case for parsing of dict-of-dicts into kwargs.

test/test_data_dict_dict.json

@@ -0,0 +1,22 @@
+{
+    "positive_integer_range": {
+        "start": 0,
+        "end": 2,
+        "value": 1
+    },
+    "negative_integer_range": {
+        "start": -2,
+        "end": 0,
+        "value": -1
+    },
+    "positive_real_range": {
+        "start": 0.0,
+        "end": 1.0,
+        "value": 0.5
+    },
+    "negative_real_range": {
+        "start": -1.0,
+        "end": 0.0,
+        "value": -0.5
+    }
+}

test/test_example.py

@@ -31,6 +31,12 @@ def test_greater(self, value):
         a, b = value
         self.assertGreater(a, b)
 
+    @file_data("test_data_dict_dict.json")
+    def test_file_data_dict_dict(self, start, end, value):
+        self.assertLess(start, end)
+        self.assertLess(value, end)
+        self.assertGreater(value, start)
+
     @file_data('test_data_dict.json')
     def test_file_data_dict(self, value):
         self.assertTrue(has_three_elements(value))