Refactor news API integration to use NewsApiWrapper and GnewsWrapper; add tests for Gnews API functionality

tests/api/test_gnews_api.py

@@ -0,0 +1,34 @@
+import pytest
+from app.news import GnewsWrapper
+
+
+@pytest.mark.news
+@pytest.mark.api
+class TestGnewsAPI:
+
+    def test_gnews_api_initialization(self):
+        gnews_api = GnewsWrapper()
+        assert gnews_api is not None
+
+    def test_gnews_api_get_latest_news(self):
+        gnews_api = GnewsWrapper()
+        articles = gnews_api.get_latest_news(query="crypto", total=2)
+        assert isinstance(articles, list)
+        assert len(articles) == 2
+        for article in articles:
+            assert hasattr(article, 'source')
+            assert hasattr(article, 'time')
+            assert hasattr(article, 'title')
+            assert hasattr(article, 'description')
+
+    def test_gnews_api_get_top_headlines(self):
+        news_api = GnewsWrapper()
+        articles = news_api.get_top_headlines(query="crypto", total=2)
+        assert isinstance(articles, list)
+        assert len(articles) == 2
+        for article in articles:
+            assert hasattr(article, 'source')
+            assert hasattr(article, 'time')
+            assert hasattr(article, 'title')
+            assert hasattr(article, 'description')
+