René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Spec now validates three times","articleBody":"              This seems wasteful since `Spec.from_dict` has already validated the spec. This now validates the spec three times, once in `Spec.from_dict`, once in `validate_request`, and once in `validate_response`:\r\n\r\n```python\r\nfrom openapi_core import Spec, validate_request, validate_response\r\nfrom openapi_core.testing import MockRequest, MockResponse\r\n\r\nspec = Spec.from_dict(\r\n    {\r\n        \"openapi\": \"3.1.0\",\r\n        \"info\": {\"title\": \"Test\", \"version\": \"1.0.0\"},\r\n        \"paths\": {\"/\": {\"get\": {\"responses\": {\"200\": {\"description\": \"OK\"}}}}},\r\n    },\r\n)\r\nrequest = MockRequest(\"http://localhost\", \"get\", \"/\")\r\nvalidate_request(request, spec=spec)\r\nresponse = MockResponse(\"\")\r\nvalidate_response(request, response, spec=spec)\r\n```\r\n\r\nThis adds a very expensive per-request and per-response overhead when the spec is large.\r\n\r\nMoreover, the documented workaround doesn’t work; this still validates the spec (as can be seen by misspelling `title`, say):\r\n\r\n```python\r\nfrom openapi_core import Spec, validate_request, validate_response\r\nfrom openapi_core.testing import MockRequest, MockResponse\r\n\r\nspec = Spec.from_dict(\r\n    {\r\n        \"openapi\": \"3.1.0\",\r\n        \"info\": {\"titel\": \"Test\", \"version\": \"1.0.0\"},\r\n        \"paths\": {\"/\": {\"get\": {\"responses\": {\"200\": {\"description\": \"OK\"}}}}},\r\n    },\r\n    validator=None,\r\n)\r\nrequest = MockRequest(\"http://localhost\", \"get\", \"/\")\r\nvalidate_request(request, spec=spec, spec_validator_cls=None)\r\nresponse = MockResponse(\"\")\r\nvalidate_response(request, response, spec=spec, spec_validator_cls=None)\r\n```\r\n\r\n_Originally posted by @andersk in https://github.com/python-openapi/openapi-core/issues/686#issuecomment-1769685666_\r\n            ","author":{"url":"https://github.com/p1c2u","@type":"Person","name":"p1c2u"},"datePublished":"2023-11-03T20:46:15.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/714/openapi-core/issues/714"}