Separate botocore langchain and botocorelatest

Author: hmstepanek

tests/external_botocore/test_bedrock_chat_completion_via_langchain.py

@@ -62,9 +62,12 @@ def response_streaming(request):
 
 @pytest.fixture(scope="module")
 def exercise_model(bedrock_server, model_id, response_streaming):
-    # These are only available in botocore latest environment.
-    from langchain.chains import ConversationChain
-    from langchain_community.chat_models import BedrockChat
+    try:
+        # These are only available in certain botocore environments.
+        from langchain.chains import ConversationChain
+        from langchain_community.chat_models import BedrockChat
+    except ImportError:
+        pytest.skip(reason="Langchain not installed.")
 
     def _exercise_model(prompt):
         bedrock_llm = BedrockChat(

tox.ini

@@ -103,6 +103,7 @@ envlist =
     python-cross_agent-pypy27-without_extensions,
     python-datastore_sqlite-{py27,py37,py38,py39,py310,py311,py312,pypy27,pypy310},
     python-external_botocore-{py38,py39,py310,py311,py312}-botocorelatest,
+    python-external_botocore-{py311}-botocorelatest-langchain,
     python-external_botocore-py310-botocore0125,
     python-external_botocore-py311-botocore128,
     python-external_feedparser-py27-feedparser{05,06},
@@ -259,7 +260,7 @@ deps =
     datastore_redis-redis0400: redis<4.1
     external_botocore-botocorelatest: botocore
     external_botocore-botocorelatest: boto3
-    external_botocore-botocorelatest: langchain
+    external_botocore-botocorelatest-langchain: langchain
     external_botocore-botocore128: botocore<1.29
     external_botocore-botocore0125: botocore<1.26
     external_botocore-{py38,py39,py310,py311,py312}: moto