sorting-race 0.2.0

Terminal-based sorting algorithm race visualization tool with real-time metrics
Documentation
use crossterm::event::{KeyCode, KeyEvent, KeyModifiers};

#[cfg(test)]
mod arrow_navigation_tests {
    use super::*;
    
    /// Contract test for arrow key navigation
    /// 
    /// From interactive_interface.md:
    /// Input: KeyEvent { code: Up/Down/Left/Right, modifiers: NONE }
    /// Precondition: config_focus = Some(field)
    /// Postcondition:
    ///   - Configuration value changes based on arrow direction
    ///   - Visual feedback shows current selection
    ///   - Invalid values are skipped/rejected
    #[test]
    fn test_arrow_up_navigation() {
        let key_event = KeyEvent {
            code: KeyCode::Up,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::ArraySize);
        // 
        // // Set current array size to 100
        // let mut config = interactive_mode.get_current_config();
        // config.array_size = 100;
        // interactive_mode.set_config(config);
        // 
        // let result = interactive_mode.handle_key_event(key_event);
        // 
        // assert!(result.is_ok());
        // // Should move to previous size in list [10, 25, 50, 100, 200, 500, 1000]
        // // From 100, up should go to 50
        // assert_eq!(interactive_mode.get_current_config().array_size, 50);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_down_navigation() {
        let key_event = KeyEvent {
            code: KeyCode::Down,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::ArraySize);
        // 
        // // Set current array size to 100
        // let mut config = interactive_mode.get_current_config();
        // config.array_size = 100;
        // interactive_mode.set_config(config);
        // 
        // let result = interactive_mode.handle_key_event(key_event);
        // 
        // assert!(result.is_ok());
        // // Should move to next size in list [10, 25, 50, 100, 200, 500, 1000]
        // // From 100, down should go to 200
        // assert_eq!(interactive_mode.get_current_config().array_size, 200);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_navigation_requires_focus() {
        // Contract: Precondition: config_focus = Some(field)
        
        let key_event = KeyEvent {
            code: KeyCode::Up,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = None; // No focus - arrow keys should be ignored
        // 
        // let config_before = interactive_mode.get_current_config().clone();
        // 
        // let result = interactive_mode.handle_key_event(key_event);
        // 
        // // Should not change configuration when no focus
        // assert!(result.is_ok()); // Event handled gracefully
        // let config_after = interactive_mode.get_current_config();
        // assert_eq!(config_before, config_after);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_navigation_distribution_cycling() {
        // Test arrow navigation for distribution configuration
        
        let down_key = KeyEvent {
            code: KeyCode::Down,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::Distribution);
        // 
        // // Start with Shuffled (default)
        // let mut config = interactive_mode.get_current_config();
        // config.distribution = DistributionType::Shuffled;
        // interactive_mode.set_config(config);
        // 
        // let result = interactive_mode.handle_key_event(down_key);
        // 
        // assert!(result.is_ok());
        // // Should cycle to next distribution
        // assert_eq!(interactive_mode.get_current_config().distribution, DistributionType::Reversed);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_navigation_fairness_mode_cycling() {
        // Test arrow navigation for fairness mode configuration
        
        let down_key = KeyEvent {
            code: KeyCode::Down,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::FairnessMode);
        // 
        // // Start with Comparison (default)
        // let mut config = interactive_mode.get_current_config();
        // config.fairness_mode = FairnessMode::Comparison;
        // interactive_mode.set_config(config);
        // 
        // let result = interactive_mode.handle_key_event(down_key);
        // 
        // assert!(result.is_ok());
        // // Should cycle to next fairness mode
        // assert_eq!(interactive_mode.get_current_config().fairness_mode, FairnessMode::Weighted);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_navigation_wraps_at_boundaries() {
        // Contract: Test that navigation wraps around at list boundaries
        
        let up_key = KeyEvent {
            code: KeyCode::Up,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::ArraySize);
        // 
        // // Set to minimum size (10) and go up - should wrap to maximum (1000)
        // let mut config = interactive_mode.get_current_config();
        // config.array_size = 10; // First in list
        // interactive_mode.set_config(config);
        // 
        // let result = interactive_mode.handle_key_event(up_key);
        // 
        // assert!(result.is_ok());
        // // Should wrap to last item in list
        // assert_eq!(interactive_mode.get_current_config().array_size, 1000);
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
    
    #[test]
    fn test_arrow_navigation_provides_visual_feedback() {
        // Contract: Visual feedback shows current selection
        
        let down_key = KeyEvent {
            code: KeyCode::Down,
            modifiers: KeyModifiers::NONE,
            kind: crossterm::event::KeyEventKind::Press,
            state: crossterm::event::KeyEventState::NONE,
        };
        
        // TODO: Uncomment when InteractiveMode is implemented
        // let mut interactive_mode = InteractiveMode::new();
        // interactive_mode.config_focus = Some(ConfigurationField::ArraySize);
        // 
        // let result = interactive_mode.handle_key_event(down_key);
        // 
        // assert!(result.is_ok());
        // // Should indicate visual feedback is needed
        // assert!(interactive_mode.should_update_display());
        // assert!(interactive_mode.has_selection_changed());
        
        // For TDD: This test must fail until implementation exists
        panic!("InteractiveMode not yet implemented - this test should fail until T024 is complete");
    }
}