Ensure deployment_id is set to provided deployment, required for Azure OpenAI. (#5002)

# Ensure deployment_id is set to provided deployment, required for Azure
OpenAI.
---------

Co-authored-by: Lucas Pickup <lupickup@microsoft.com>
Co-authored-by: Bagatur <baskaryan@gmail.com>

libs/langchain/tests/integration_tests/embeddings/test_openai.py

@@ -1,4 +1,6 @@
 """Test openai embeddings."""
+import os
+
 import numpy as np
 import openai
 import pytest
@@ -79,3 +81,26 @@ def test_embed_documents_normalized() -> None:
 def test_embed_query_normalized() -> None:
     output = OpenAIEmbeddings().embed_query("foo walked to the market")
     assert np.isclose(np.linalg.norm(output), 1.0)
+
+
+def test_azure_openai_embeddings() -> None:
+    from openai import error
+
+    os.environ["OPENAI_API_TYPE"] = "azure"
+    os.environ["OPENAI_API_BASE"] = "https://your-endpoint.openai.azure.com/"
+    os.environ["OPENAI_API_KEY"] = "your AzureOpenAI key"
+    os.environ["OPENAI_API_VERSION"] = "2023-03-15-preview"
+
+    embeddings = OpenAIEmbeddings(deployment="your-embeddings-deployment-name")
+    text = "This is a test document."
+
+    try:
+        embeddings.embed_query(text)
+    except error.InvalidRequestError as e:
+        if "Must provide an 'engine' or 'deployment_id' parameter" in str(e):
+            assert (
+                False
+            ), "deployment was provided to but openai.Embeddings didn't get it."
+    except Exception:
+        # Expected to fail because endpoint doesn't exist.
+        pass