Move app into function for better testing

src/streamlit_app.py

@@ -7,20 +7,33 @@ LEAGUE_NAME = "LOFG"
 DATA_URL = "../tests/mocks/2023_keepers.csv"
 
 
-st.title(f"{LEAGUE_NAME} Keeper Options")
-
-
 @st.cache_data
 def load_data():
     data = pd.read_csv(os.path.join(os.path.dirname(__file__), DATA_URL), index_col=0)
+    # data["position"] = data["eligible_positions"].fillna('[""]').apply(lambda x: json.loads(x))
     data.columns = data.columns.str.lower()
     return data
 
 
-data_load_state = st.text("Loading data...")
-data = load_data()
-data_load_state.text("Data loaded")
+def get_app():
+    st.title(f"{LEAGUE_NAME} Keeper Options")
+    data_load_state = st.text("Loading data...")
+    data = load_data()
+    data_load_state.text("Data loaded")
+
+    raw_display_columns = [
+        "player_id",
+        "name",
+        "position",
+        "team_name",
+        "years_eligible",
+        "keeper_cost",
+        "eligible",
+    ]
+
+    st.subheader("Raw data")
+    st.write(data[raw_display_columns])
 
 
-st.subheader("Raw data")
-st.write(data)
+if __name__ == "__main__":
+    get_app()