from unittest.mock import patch

def test_agent_creation():
    with patch('julep.Client') as MockClient:
        mock_client = MockClient()
        mock_client.agents.create.return_value = {
            "id": "test_id",
            "name": "Test Agent"
        }
        
        agent = mock_client.agents.create(name="Test Agent")
        assert agent["name"] == "Test Agent"

def test_api_error_handling():
    with patch('julep.Client') as MockClient:
        mock_client = MockClient()
        mock_client.agents.get.side_effect = julep.APIError(
            message="Not found",
            status_code=404
        )
        
        with pytest.raises(julep.APIError):
            mock_client.agents.get("nonexistent_id")

import pytest

@pytest.fixture
def test_client():
    return Client(
        api_key="test_key",
        base_url="https://test-api.julep.ai"
    )

def test_end_to_end(test_client):
    agent = test_client.agents.create(name="Test Agent")
    assert agent.id is not None