Visualize company sentiment (#422)

Updates the tab and widget "Stimmung"

tests/ui/sentiment_elements_test.py

@@ -0,0 +1,32 @@
+"""Tests for sentiment ui elements."""
+
+from sqlalchemy.orm import Session
+
+from aki_prj23_transparenzregister.ui import data_elements, sentiment_elements
+
+
+def test_sentiment_layout(news_db: Session) -> None:
+    """Checks if the sentiment tab layout of the company page can be created."""
+    selected_company_id = 1
+    sentiment_elements.sentiment_layout(selected_company_id, news_db)
+
+
+def test_sentiment_trend_figure(news_db: Session) -> None:
+    """Checks if the sentiment trend graph can be created."""
+    n = 10
+    company_id = 1
+    articles = data_elements.get_news_of_one_company(company_id, news_db)
+
+    articles["overall_sentiment_label"] = articles["overall_sentiment_label"].apply(
+        lambda _: _.value
+    )
+
+    articles = articles.sort_values(by=["timestamp"], ascending=True)
+    articles["rolling_mean"] = articles["overall_sentiment_label"].rolling(n).mean()
+    sentiment_elements.sentiment_trend_figure(articles, n)
+
+
+def test_sentiment_gauge_figure() -> None:
+    """Checks if the sentiment gauge graph can be created."""
+    sentiment_score = 0.2
+    sentiment_elements.sentiment_gauge_figure(sentiment_score)