ai-agent-book 精选快照（<2MB 代码与文档，来自 github.com/bojieli/ai-agent-book）

chapter9/browser-use-rpa/browser-use/tests/ci/test_llm_schema_optimizer.py

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+"""
+Tests for the SchemaOptimizer to ensure it correctly processes and
+optimizes the schemas for agent actions without losing information.
+"""
+
+from pydantic import BaseModel
+
+from browser_use.agent.views import AgentOutput
+from browser_use.llm.schema import SchemaOptimizer
+from browser_use.tools.service import Tools
+
+
+class ProductInfo(BaseModel):
+	"""A sample structured output model with multiple fields."""
+
+	price: str
+	title: str
+	rating: float | None = None
+
+
+def test_optimizer_preserves_all_fields_in_structured_done_action():
+	"""
+	Ensures the SchemaOptimizer does not drop fields from a custom structured
+	output model when creating the schema for the 'done' action.
+
+	This test specifically checks for a bug where fields were being lost
+	during the optimization process.
+	"""
+	# 1. Setup a tools with a custom output model, simulating an Agent
+	#    being created with an `output_model_schema`.
+	tools = Tools(output_model=ProductInfo)
+
+	# 2. Get the dynamically created AgentOutput model, which includes all registered actions.
+	ActionModel = tools.registry.create_action_model()
+	agent_output_model = AgentOutput.type_with_custom_actions(ActionModel)
+
+	# 3. Run the schema optimizer on the agent's output model.
+	optimized_schema = SchemaOptimizer.create_optimized_json_schema(agent_output_model)
+
+	# 4. Find the 'done' action schema within the optimized output.
+	# The path is properties -> action -> items -> anyOf -> [schema with 'done'].
+	done_action_schema = None
+	actions_schemas = optimized_schema.get('properties', {}).get('action', {}).get('items', {}).get('anyOf', [])
+	for action_schema in actions_schemas:
+		if 'done' in action_schema.get('properties', {}):
+			done_action_schema = action_schema
+			break
+
+	# 5. Assert that the 'done' action schema was successfully found.
+	assert done_action_schema is not None, "Could not find 'done' action in the optimized schema."
+
+	# 6. Navigate to the schema for our custom data model within the 'done' action.
+	# The path is properties -> done -> properties -> data -> properties.
+	done_params_schema = done_action_schema.get('properties', {}).get('done', {})
+	structured_data_schema = done_params_schema.get('properties', {}).get('data', {})
+	final_properties = structured_data_schema.get('properties', {})
+
+	# 7. Assert that the set of fields in the optimized schema matches the original model's fields.
+	original_fields = set(ProductInfo.model_fields.keys())
+	optimized_fields = set(final_properties.keys())
+
+	assert original_fields == optimized_fields, (
+		f"Field mismatch between original and optimized structured 'done' action schema.\n"
+		f'Missing from optimized: {original_fields - optimized_fields}\n'
+		f'Unexpected in optimized: {optimized_fields - original_fields}'
+	)