fn test_previous_program_with_empty()

in src/app.rs [506:522]

• 10 lines of code
• 1 McCabe index (conditional complexity)

    fn test_previous_program_with_empty() {
        let mut app = App::new();

        // Initially no item is selected
        assert_eq!(app.selected_program(), None);
        
        // Initially ScrollbarState is 0
        assert_eq!(app.vertical_scroll_state, ScrollbarState::new(0), "unexpected ScrollbarState");
        assert_eq!(app.vertical_scroll, 0, "expected 0 vertical_scroll, got: {}", app.vertical_scroll);

        // After calling previous, no item should be selected
        app.previous_program();
        assert_eq!(app.selected_program(), None);

        assert_eq!(app.vertical_scroll_state, ScrollbarState::new(0), "unexpected ScrollbarState");
        assert_eq!(app.vertical_scroll, 0, "expected 0 vertical_scroll, got: {}", app.vertical_scroll);
    }