mirror of
https://github.com/NousResearch/hermes-agent.git
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104 lines
3.4 KiB
Python
104 lines
3.4 KiB
Python
"""Regression test for TUI v2 blitz bug: explicit /model --provider switch
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silently fell back to the old primary provider on the next turn because the
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fallback chain — seeded from config at agent __init__ — kept entries for the
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provider the user just moved away from.
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Reported: "switched from openrouter provider to anthropic api key via hermes
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model and the tui keeps trying openrouter".
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"""
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from unittest.mock import MagicMock, patch
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from run_agent import AIAgent
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def _make_agent(chain):
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agent = AIAgent.__new__(AIAgent)
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agent.provider = "openrouter"
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agent.model = "x-ai/grok-4"
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agent.base_url = "https://openrouter.ai/api/v1"
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agent.api_key = "or-key"
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agent.api_mode = "chat_completions"
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agent.client = MagicMock()
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agent._client_kwargs = {"api_key": "or-key", "base_url": "https://openrouter.ai/api/v1"}
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agent.context_compressor = None
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agent._anthropic_api_key = ""
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agent._anthropic_base_url = None
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agent._anthropic_client = None
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agent._is_anthropic_oauth = False
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agent._cached_system_prompt = "cached"
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agent._primary_runtime = {}
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agent._fallback_activated = False
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agent._fallback_index = 0
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agent._fallback_chain = list(chain)
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agent._fallback_model = chain[0] if chain else None
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return agent
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def _switch_to_anthropic(agent):
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with (
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patch("agent.anthropic_adapter.build_anthropic_client", return_value=MagicMock()),
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patch("agent.anthropic_adapter.resolve_anthropic_token", return_value="sk-ant-xyz"),
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patch("agent.anthropic_adapter._is_oauth_token", return_value=False),
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patch("hermes_cli.timeouts.get_provider_request_timeout", return_value=None),
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):
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agent.switch_model(
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new_model="claude-sonnet-4-5",
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new_provider="anthropic",
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api_key="sk-ant-xyz",
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base_url="https://api.anthropic.com",
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api_mode="anthropic_messages",
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)
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def test_switch_drops_old_primary_from_fallback_chain():
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agent = _make_agent([
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{"provider": "openrouter", "model": "x-ai/grok-4"},
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{"provider": "nous", "model": "hermes-4"},
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])
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_switch_to_anthropic(agent)
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providers = [entry["provider"] for entry in agent._fallback_chain]
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assert "openrouter" not in providers, "old primary must be pruned"
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assert "anthropic" not in providers, "new primary is redundant in the chain"
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assert providers == ["nous"]
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assert agent._fallback_model == {"provider": "nous", "model": "hermes-4"}
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def test_switch_with_empty_chain_stays_empty():
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agent = _make_agent([])
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_switch_to_anthropic(agent)
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assert agent._fallback_chain == []
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assert agent._fallback_model is None
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def test_switch_initializes_missing_fallback_attrs():
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agent = _make_agent([])
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del agent._fallback_chain
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del agent._fallback_model
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_switch_to_anthropic(agent)
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assert agent._fallback_chain == []
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assert agent._fallback_model is None
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def test_switch_within_same_provider_preserves_chain():
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chain = [{"provider": "openrouter", "model": "x-ai/grok-4"}]
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agent = _make_agent(chain)
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with patch("hermes_cli.timeouts.get_provider_request_timeout", return_value=None):
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agent.switch_model(
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new_model="openai/gpt-5",
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new_provider="openrouter",
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api_key="or-key",
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base_url="https://openrouter.ai/api/v1",
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)
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assert agent._fallback_chain == chain
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