Always print summary as last thing in validation (#700)

Update test to use respond_json.

optimade/validator/validator.py

@@ -252,6 +252,7 @@ def validate_implementation(self):
             )
             self._test_as_type()
             self.valid = not bool(self.results.failure_count)
+            self.print_summary()
             return
 
         # Test entire implementation
@@ -268,9 +269,9 @@ def validate_implementation(self):
                 f"Unable to deserialize response from introspective {info_endp!r} endpoint. "
                 "This is required for all further validation, so the validator will now exit."
             )
-            self.print_summary()
             # Set valid to False to ensure error code 1 is raised at CLI
             self.valid = False
+            self.print_summary()
             return
 
         # Grab the provider prefix from base info and use it when looking for provider fields

tests/server/test_server_validation.py

@@ -1,7 +1,6 @@
 import os
 import json
 import dataclasses
-from traceback import print_exc
 
 import pytest
 
@@ -64,7 +63,7 @@ def test_mongo_backend_package_used():
         )
 
 
-def test_as_type_with_validator(client):
+def test_as_type_with_validator(client, capsys):
     import unittest
 
     test_urls = {
@@ -80,14 +79,22 @@ def test_as_type_with_validator(client):
     ):
         for url, as_type in test_urls.items():
             validator = ImplementationValidator(
-                base_url=url, as_type=as_type, verbosity=5
+                base_url=url, as_type=as_type, respond_json=True
             )
-            try:
-                validator.validate_implementation()
-            except Exception:
-                print_exc()
+            validator.validate_implementation()
             assert validator.valid
 
+            captured = capsys.readouterr()
+            json_response = json.loads(captured.out)
+
+            assert json_response["failure_count"] == 0
+            assert json_response["internal_failure_count"] == 0
+            assert json_response["optional_failure_count"] == 0
+            assert validator.results.failure_count == 0
+            assert validator.results.internal_failure_count == 0
+            assert validator.results.optional_failure_count == 0
+            assert dataclasses.asdict(validator.results) == json_response
+
 
 def test_query_value_formatting(client):
     from optimade.models.optimade_json import DataType