Allow special marker ANY inside JSON examples

spec/test/features/steps/comparedict.py

@@ -1,4 +1,5 @@
 from functools import singledispatch
+from jsonexample import ANY
 
 
 def assert_same_type(f):
@@ -40,3 +41,8 @@ def _(model, obj):
 @assert_same_type
 def _(model, obj):
     return model <= obj
+
+
+@is_subset.register(ANY)
+def _(model, obj):
+    return True

spec/test/features/steps/jsonexample.py

@@ -0,0 +1,24 @@
+import json
+from functools import partial
+import re
+
+
+class ANY:
+    pass
+
+
+class ExampleDecoder(json.JSONDecoder):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, object_hook=self.object_hook, **kwargs)
+
+    def decode(self, s, *args, **kwargs):
+        s = re.sub(r'(\W)(ANY)(\W)', r'\1{"_type": "ANY"}\3', s)
+        return super().decode(s, *args, **kwargs)
+
+    def object_hook(self, dct):
+        if dct.get('_type', None) == 'ANY':
+            return ANY()
+        else:
+            return dct
+
+loads = partial(json.loads, cls=ExampleDecoder)

spec/test/features/steps/steps.py

@@ -8,6 +8,7 @@ import subprocess
 import requests
 from environconfig import EnvironConfig, StringVar, IntVar, BooleanVar
 from comparedict import is_subset
+import jsonexample
 
 import logging
 
@@ -134,7 +135,7 @@ def step_impl(context, reason):
 
 @then('I get the following response body')
 def step_impl(context):
-    assert is_subset(json.loads(context.text), context.response.json())
+    assert is_subset(jsonexample.loads(context.text), context.response.json())
 
 
 @then('I get an empty response body')