feat: News Search Component (#8190)

* Create news_search.py

* add tests

* [autofix.ci] apply automated fixes

---------

Co-authored-by: autofix-ci[bot] <114827586+autofix-ci[bot]@users.noreply.github.com>

src/backend/tests/unit/components/data/test_news_search.py

@@ -0,0 +1,88 @@
+from unittest.mock import Mock, patch
+
+import pytest
+import requests
+from langflow.components.data.news_search import NewsSearchComponent
+from langflow.schema import DataFrame
+
+from tests.base import ComponentTestBaseWithoutClient
+
+
+class TestNewsSearchComponent(ComponentTestBaseWithoutClient):
+    @pytest.fixture
+    def component_class(self):
+        return NewsSearchComponent
+
+    @pytest.fixture
+    def default_kwargs(self):
+        return {"query": "OpenAI"}
+
+    @pytest.fixture
+    def file_names_mapping(self):
+        return []
+
+    def test_successful_news_search(self):
+        # Mock Google News RSS feed content
+        mock_rss_content = """
+        <?xml version="1.0" encoding="UTF-8"?>
+        <rss version="2.0">
+            <channel>
+                <item>
+                    <title>Test News 1</title>
+                    <link>https://example.com/1</link>
+                    <pubDate>2024-03-20</pubDate>
+                    <description>Summary 1</description>
+                </item>
+                <item>
+                    <title>Test News 2</title>
+                    <link>https://example.com/2</link>
+                    <pubDate>2024-03-21</pubDate>
+                    <description>Summary 2</description>
+                </item>
+            </channel>
+        </rss>
+        """
+        mock_response = Mock()
+        mock_response.content = mock_rss_content.encode("utf-8")
+        mock_response.raise_for_status = Mock()
+
+        with patch("requests.get", return_value=mock_response):
+            component = NewsSearchComponent(query="OpenAI")
+            result = component.search_news()
+            assert isinstance(result, DataFrame)
+            df = result
+            assert len(df) == 2
+            assert list(df.columns) == ["title", "link", "published", "summary"]
+            assert df.iloc[0]["title"] == "Test News 1"
+            assert df.iloc[1]["title"] == "Test News 2"
+
+    def test_news_search_error(self):
+        with patch("requests.get", side_effect=requests.RequestException("Network error")):
+            component = NewsSearchComponent(query="OpenAI")
+            result = component.search_news()
+            assert isinstance(result, DataFrame)
+            df = result
+            assert len(df) == 1
+            assert df.iloc[0]["title"] == "Error"
+            assert "Network error" in df.iloc[0]["summary"]
+
+    def test_empty_news_results(self):
+        # Mock empty RSS feed
+        mock_rss_content = """
+        <?xml version="1.0" encoding="UTF-8"?>
+        <rss version="2.0">
+            <channel>
+            </channel>
+        </rss>
+        """
+        mock_response = Mock()
+        mock_response.content = mock_rss_content.encode("utf-8")
+        mock_response.raise_for_status = Mock()
+
+        with patch("requests.get", return_value=mock_response):
+            component = NewsSearchComponent(query="OpenAI")
+            result = component.search_news()
+            assert isinstance(result, DataFrame)
+            df = result
+            assert len(df) == 1
+            assert df.iloc[0]["title"] == "No articles found"