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import pytest
from PIL import Image
from smolagents.agents import ToolCall
from smolagents.memory import (
ActionStep,
AgentMemory,
ChatMessage,
MemoryStep,
MessageRole,
PlanningStep,
SystemPromptStep,
TaskStep,
)
from smolagents.monitoring import Timing, TokenUsage
class TestAgentMemory:
def test_initialization(self):
system_prompt = "This is a system prompt."
memory = AgentMemory(system_prompt=system_prompt)
assert memory.system_prompt.system_prompt == system_prompt
assert memory.steps == []
def test_return_all_code_actions(self):
memory = AgentMemory(system_prompt="This is a system prompt.")
memory.steps = [
ActionStep(step_number=1, timing=Timing(start_time=0.0, end_time=1.0), code_action="print('Hello')"),
ActionStep(step_number=2, timing=Timing(start_time=0.0, end_time=1.0), code_action=None),
ActionStep(step_number=3, timing=Timing(start_time=0.0, end_time=1.0), code_action="print('World')"),
] # type: ignore
assert memory.return_full_code() == "print('Hello')\n\nprint('World')"
class TestMemoryStep:
def test_initialization(self):
step = MemoryStep()
assert isinstance(step, MemoryStep)
def test_dict(self):
step = MemoryStep()
assert step.dict() == {}
def test_to_messages(self):
step = MemoryStep()
with pytest.raises(NotImplementedError):
step.to_messages()
def test_action_step_dict():
action_step = ActionStep(
model_input_messages=[ChatMessage(role=MessageRole.USER, content="Hello")],
tool_calls=[
ToolCall(id="id", name="get_weather", arguments={"location": "Paris"}),
],
timing=Timing(start_time=0.0, end_time=1.0),
step_number=1,
error=None,
model_output_message=ChatMessage(role=MessageRole.ASSISTANT, content="Hi"),
model_output="Hi",
observations="This is a nice observation",
observations_images=[Image.new("RGB", (100, 100))],
action_output="Output",
token_usage=TokenUsage(input_tokens=10, output_tokens=20),
)
action_step_dict = action_step.dict()
# Check each key individually for better test failure messages
assert "model_input_messages" in action_step_dict
assert action_step_dict["model_input_messages"] == [ChatMessage(role=MessageRole.USER, content="Hello")]
assert "tool_calls" in action_step_dict
assert len(action_step_dict["tool_calls"]) == 1
assert action_step_dict["tool_calls"][0] == {
"id": "id",
"type": "function",
"function": {
"name": "get_weather",
"arguments": {"location": "Paris"},
},
}
assert "timing" in action_step_dict
assert action_step_dict["timing"] == {"start_time": 0.0, "end_time": 1.0, "duration": 1.0}
assert "token_usage" in action_step_dict
assert action_step_dict["token_usage"] == {"input_tokens": 10, "output_tokens": 20, "total_tokens": 30}
assert "step_number" in action_step_dict
assert action_step_dict["step_number"] == 1
assert "error" in action_step_dict
assert action_step_dict["error"] is None
assert "model_output_message" in action_step_dict
assert action_step_dict["model_output_message"] == {
"role": "assistant",
"content": "Hi",
"tool_calls": None,
"raw": None,
"token_usage": None,
}
assert "model_output" in action_step_dict
assert action_step_dict["model_output"] == "Hi"
assert "observations" in action_step_dict
assert action_step_dict["observations"] == "This is a nice observation"
assert "observations_images" in action_step_dict
assert "action_output" in action_step_dict
assert action_step_dict["action_output"] == "Output"
def test_action_step_to_messages():
action_step = ActionStep(
model_input_messages=[ChatMessage(role=MessageRole.USER, content="Hello")],
tool_calls=[
ToolCall(id="id", name="get_weather", arguments={"location": "Paris"}),
],
timing=Timing(start_time=0.0, end_time=1.0),
step_number=1,
error=None,
model_output_message=ChatMessage(role=MessageRole.ASSISTANT, content="Hi"),
model_output="Hi",
observations="This is a nice observation",
observations_images=[Image.new("RGB", (100, 100))],
action_output="Output",
token_usage=TokenUsage(input_tokens=10, output_tokens=20),
)
messages = action_step.to_messages()
assert len(messages) == 4
for message in messages:
assert isinstance(message, ChatMessage)
assistant_message = messages[0]
assert assistant_message.role == MessageRole.ASSISTANT
assert len(assistant_message.content) == 1
assert assistant_message.content[0]["type"] == "text"
assert assistant_message.content[0]["text"] == "Hi"
message = messages[1]
assert message.role == MessageRole.TOOL_CALL
assert len(message.content) == 1
assert message.content[0]["type"] == "text"
assert "Calling tools:" in message.content[0]["text"]
image_message = messages[2]
assert image_message.content[0]["type"] == "image" # type: ignore
observation_message = messages[3]
assert observation_message.role == MessageRole.TOOL_RESPONSE
assert "Observation:\nThis is a nice observation" in observation_message.content[0]["text"]
def test_action_step_to_messages_no_tool_calls_with_observations():
action_step = ActionStep(
model_input_messages=None,
tool_calls=None,
timing=Timing(start_time=0.0, end_time=1.0),
step_number=1,
error=None,
model_output_message=None,
model_output=None,
observations="This is an observation.",
observations_images=None,
action_output=None,
token_usage=TokenUsage(input_tokens=10, output_tokens=20),
)
messages = action_step.to_messages()
assert len(messages) == 1
observation_message = messages[0]
assert observation_message.role == MessageRole.TOOL_RESPONSE
assert "Observation:\nThis is an observation." in observation_message.content[0]["text"]
def test_planning_step_to_messages():
planning_step = PlanningStep(
model_input_messages=[ChatMessage(role=MessageRole.USER, content="Hello")],
model_output_message=ChatMessage(role=MessageRole.ASSISTANT, content="Plan"),
plan="This is a plan.",
timing=Timing(start_time=0.0, end_time=1.0),
)
messages = planning_step.to_messages(summary_mode=False)
assert len(messages) == 2
for message in messages:
assert isinstance(message, ChatMessage)
assert isinstance(message.content, list)
assert len(message.content) == 1
for content in message.content:
assert isinstance(content, dict)
assert "type" in content
assert "text" in content
assert messages[0].role == MessageRole.ASSISTANT
assert messages[1].role == MessageRole.USER
def test_task_step_to_messages():
task_step = TaskStep(task="This is a task.", task_images=[Image.new("RGB", (100, 100))])
messages = task_step.to_messages(summary_mode=False)
assert len(messages) == 1
for message in messages:
assert isinstance(message, ChatMessage)
assert message.role == MessageRole.USER
assert isinstance(message.content, list)
assert len(message.content) == 2
text_content = message.content[0]
assert isinstance(text_content, dict)
assert "type" in text_content
assert "text" in text_content
for image_content in message.content[1:]:
assert isinstance(image_content, dict)
assert "type" in image_content
assert "image" in image_content
def test_system_prompt_step_to_messages():
system_prompt_step = SystemPromptStep(system_prompt="This is a system prompt.")
messages = system_prompt_step.to_messages(summary_mode=False)
assert len(messages) == 1
for message in messages:
assert isinstance(message, ChatMessage)
assert message.role == MessageRole.SYSTEM
assert isinstance(message.content, list)
assert len(message.content) == 1
for content in message.content:
assert isinstance(content, dict)
assert "type" in content
assert "text" in content
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