Enable list with no dict objects to be sorted in api samples

So far we had only dicts to be sorted. Although Aggregates extension has a
response case which a list of strings is returned and the current key
attribute didn't checked if the instance was a dict or another object which
caused a break in the use case above. This fix this, and use None as key to
compare if the element is not a dictionary instance.

Change-Id: Id5d31d1d2ad88fb538d8a9637a1969b179dd93ab

1 files changed, 7 insertions, 4 deletions

diff --git a/nova/tests/integrated/test_api_samples.py b/nova/tests/integrated/test_api_samples.py
index c9d0fddd7..df239db2a 100644
--- a/nova/tests/integrated/test_api_samples.py
+++ b/nova/tests/integrated/test_api_samples.py
@@ -145,12 +145,15 @@ class ApiSampleTestBase(integrated_helpers._IntegratedTestBase):
             # which order in different way when using a private key itself or
             # its regular expression, and after all doesn't interfere with
             # other tests.
+            # Besides that, there are some cases like Aggregates extension
+            # where we got a list of strings. For those cases key will be None
+            # (python's default) and the elements will be compared directly.
             # Should we define a criteria when ordering json? Doesn't seems
             # necessary so far.
-            for ex_obj, res_obj in zip(sorted(expected, key=lambda k:
-                                                        k.get('__tag__', k)),
-                                       sorted(result, key=lambda k:
-                                                        k.get('__tag__', k))):
+            key = (lambda k: k.get('__tag__', k) if isinstance(k, dict)
+                                                 else None)
+            for ex_obj, res_obj in zip(sorted(expected, key=key),
+                                       sorted(result, key=key)):
                 res = self._compare_result(subs, ex_obj, res_obj)
                 matched_value = res or matched_value