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Bedrock uses the Converse API (langchain-aws) and the AWS credential chain, so it has its own client like Anthropic/Google rather than the OpenAI-compatible registry. langchain-aws is an optional dependency (pip install ".[bedrock]"), lazy-imported with a clear install hint; importing the package never requires it. The model name is a Bedrock model ID / inference profile ID.
47 lines
1.8 KiB
Python
47 lines
1.8 KiB
Python
"""Amazon Bedrock — first-class native client via the optional langchain-aws extra.
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Auth uses the AWS credential chain (no single key env); the model is a Bedrock
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model ID / inference profile ID; langchain-aws is imported lazily with a clear
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install hint when the [bedrock] extra is absent.
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"""
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import sys
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import pytest
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from tradingagents.llm_clients.api_key_env import get_api_key_env
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from tradingagents.llm_clients.factory import create_llm_client
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from tradingagents.llm_clients.validators import validate_model
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@pytest.mark.unit
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def test_factory_routes_bedrock():
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client = create_llm_client("bedrock", "us.anthropic.claude-opus-4-8-v1:0")
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assert type(client).__name__ == "BedrockClient"
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@pytest.mark.unit
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def test_bedrock_any_model_and_no_key_env():
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assert validate_model("bedrock", "any.model-id:0") is True
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# Bedrock uses the AWS credential chain, so there is no single key env.
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assert get_api_key_env("bedrock") is None
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@pytest.mark.unit
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def test_helpful_error_when_langchain_aws_absent(monkeypatch):
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import tradingagents.llm_clients.bedrock_client as bc
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monkeypatch.setattr(bc, "_BEDROCK_CLASS", None)
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monkeypatch.setitem(sys.modules, "langchain_aws", None) # force ImportError on import
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with pytest.raises(ImportError, match=r"bedrock"):
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create_llm_client("bedrock", "m").get_llm()
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@pytest.mark.unit
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def test_construction_when_extra_installed(monkeypatch):
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pytest.importorskip("langchain_aws")
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import tradingagents.llm_clients.bedrock_client as bc
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monkeypatch.setattr(bc, "_BEDROCK_CLASS", None)
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monkeypatch.setenv("AWS_DEFAULT_REGION", "eu-west-1")
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llm = create_llm_client("bedrock", "us.anthropic.claude-sonnet-4-6-v1:0").get_llm()
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assert type(llm).__name__ == "NormalizedChatBedrockConverse"
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assert llm.region_name == "eu-west-1"
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