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venv/lib/python3.12/site-packages/jsonschema/benchmarks/unused_registry.py

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+"""
+An unused schema registry should not cause slower validation.
+
+"Unused" here means one where no reference resolution is occurring anyhow.
+
+See https://github.com/python-jsonschema/jsonschema/issues/1088.
+"""
+from pyperf import Runner
+from referencing import Registry
+from referencing.jsonschema import DRAFT201909
+
+from jsonschema import Draft201909Validator
+
+registry = Registry().with_resource(
+    "urn:example:foo",
+    DRAFT201909.create_resource({}),
+)
+
+schema = {"$ref": "https://json-schema.org/draft/2019-09/schema"}
+instance = {"maxLength": 4}
+
+no_registry = Draft201909Validator(schema)
+with_useless_registry = Draft201909Validator(schema, registry=registry)
+
+if __name__ == "__main__":
+    runner = Runner()
+
+    runner.bench_func(
+        "no registry",
+        lambda: no_registry.is_valid(instance),
+    )
+    runner.bench_func(
+        "useless registry",
+        lambda: with_useless_registry.is_valid(instance),
+    )