add integration with manifest (#62)

tests/integration_tests/llms/test_manifest.py

@@ -0,0 +1,14 @@
+"""Test manifest integration."""
+from langchain.llms.manifest import ManifestWrapper
+
+
+def test_manifest_wrapper() -> None:
+    """Test manifest wrapper."""
+    from manifest import Manifest
+
+    manifest = Manifest(
+        client_name="openai",
+    )
+    llm = ManifestWrapper(client=manifest, llm_kwargs={"temperature": 0})
+    output = llm("The capital of New York is:")
+    assert output == "Albany"