Harrison/athropic (#921)

Co-authored-by: Mike Lambert <mlambert@gmail.com>
Co-authored-by: mrbean <sam@you.com>
Co-authored-by: mrbean <43734688+sam-h-bean@users.noreply.github.com>
Co-authored-by: Ivan Vendrov <ivendrov@gmail.com>

tests/integration_tests/llms/test_anthropic.py

@@ -0,0 +1,23 @@
+"""Test Anthropic API wrapper."""
+
+from typing import Generator
+
+from langchain.llms.anthropic import Anthropic
+
+
+def test_anthropic_call() -> None:
+    """Test valid call to anthropic."""
+    llm = Anthropic(model="bare-nano-0")
+    output = llm("Say foo:")
+    assert isinstance(output, str)
+
+
+def test_anthropic_streaming() -> None:
+    """Test streaming tokens from anthropic."""
+    llm = Anthropic(model="bare-nano-0")
+    generator = llm.stream("I'm Pickle Rick")
+
+    assert isinstance(generator, Generator)
+
+    for token in generator:
+        assert isinstance(token["completion"], str)