Harrison/ddg (#3206)

Co-authored-by: itai <itai.marks@gmail.com>
Co-authored-by: Itai Marks <itaim@users.noreply.github.com>
Co-authored-by: Tianyi Pan <60060750+tipani86@users.noreply.github.com>
Co-authored-by: Tianyi Pan <tianyi.pan@clobotics.com>
Co-authored-by: Adilzhan Ismailov <13088690+aismlv@users.noreply.github.com>
Co-authored-by: Justin Flick <Justinjayflick@gmail.com>
Co-authored-by: Justin Flick <jflick@homesite.com>

tests/integration_tests/test_duckduckdgo_search_api.py

@@ -0,0 +1,22 @@
+import pytest
+
+from langchain.tools.ddg_search.tool import DuckDuckGoSearchTool
+
+
+def ddg_installed() -> bool:
+    try:
+        from duckduckgo_search import ddg  # noqa: F401
+
+        return True
+    except Exception as e:
+        print(f"duckduckgo not installed, skipping test {e}")
+        return False
+
+
+@pytest.mark.skipif(not ddg_installed(), reason="requires duckduckgo-search package")
+def test_ddg_search_tool() -> None:
+    keywords = "Bella Ciao"
+    tool = DuckDuckGoSearchTool()
+    result = tool(keywords)
+    print(result)
+    assert len(result.split()) > 20