test: add generic tests for coverage

src/game.rs

@@ -152,3 +152,233 @@ impl Game {
         Ok(())
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use sdl2::keyboard::Keycode;
+    use sdl2::pixels::Color;
+
+    fn create_test_game() -> Game {
+        // Create a minimal test game without SDL dependencies
+        // This is a simplified version for testing basic logic
+        let map = Map::new(RAW_BOARD);
+        let pacman_start_pos = map.find_starting_position(0).unwrap();
+        let pacman_start_node = *map
+            .grid_to_node
+            .get(&glam::IVec2::new(pacman_start_pos.x as i32, pacman_start_pos.y as i32))
+            .expect("Pac-Man starting position not found in graph");
+
+        // Create a dummy atlas for testing
+        let mut mapper = std::collections::HashMap::new();
+        mapper.insert(
+            "pacman/up_a.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 0,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/up_b.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 16,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/down_a.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 32,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/down_b.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 48,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/left_a.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 64,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/left_b.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 80,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/right_a.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 96,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/right_b.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 112,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "pacman/full.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 128,
+                y: 0,
+                width: 16,
+                height: 16,
+            },
+        );
+        mapper.insert(
+            "maze/full.png".to_string(),
+            crate::texture::sprite::MapperFrame {
+                x: 0,
+                y: 0,
+                width: 224,
+                height: 248,
+            },
+        );
+
+        let atlas_mapper = crate::texture::sprite::AtlasMapper { frames: mapper };
+        let dummy_texture = unsafe { std::mem::zeroed() };
+        let atlas = crate::texture::sprite::SpriteAtlas::new(dummy_texture, atlas_mapper);
+
+        let mut map_texture = crate::texture::sprite::SpriteAtlas::get_tile(&atlas, "maze/full.png").unwrap();
+        map_texture.color = Some(Color::RGB(0x20, 0x20, 0xf9));
+
+        let text_texture = TextTexture::new(1.0);
+        let audio = Audio::new();
+        let pacman = Pacman::new(&map.graph, pacman_start_node, &atlas);
+
+        Game {
+            score: 0,
+            map,
+            pacman,
+            debug_mode: false,
+            map_texture,
+            text_texture,
+            audio,
+            atlas,
+        }
+    }
+
+    #[test]
+    fn test_game_keyboard_event_direction_keys() {
+        let mut game = create_test_game();
+
+        // Test that direction keys are handled
+        game.keyboard_event(Keycode::Up);
+        game.keyboard_event(Keycode::Down);
+        game.keyboard_event(Keycode::Left);
+        game.keyboard_event(Keycode::Right);
+
+        // Should not panic
+        assert!(true);
+    }
+
+    #[test]
+    fn test_game_keyboard_event_mute_toggle() {
+        let mut game = create_test_game();
+
+        let initial_mute_state = game.audio.is_muted();
+
+        // Toggle mute
+        game.keyboard_event(Keycode::M);
+
+        // Mute state should have changed
+        assert_eq!(game.audio.is_muted(), !initial_mute_state);
+
+        // Toggle again
+        game.keyboard_event(Keycode::M);
+
+        // Should be back to original state
+        assert_eq!(game.audio.is_muted(), initial_mute_state);
+    }
+
+    #[test]
+    fn test_game_tick() {
+        let mut game = create_test_game();
+
+        // Test that tick doesn't panic
+        game.tick(0.016); // 60 FPS frame time
+
+        assert!(true);
+    }
+
+    #[test]
+    fn test_game_initial_state() {
+        let game = create_test_game();
+
+        assert_eq!(game.score, 0);
+        assert!(!game.debug_mode);
+        assert!(game.map.graph.node_count() > 0);
+    }
+
+    #[test]
+    fn test_game_debug_mode_toggle() {
+        let mut game = create_test_game();
+
+        assert!(!game.debug_mode);
+
+        // Toggle debug mode (this would normally be done via Space key in the app)
+        game.debug_mode = !game.debug_mode;
+
+        assert!(game.debug_mode);
+    }
+
+    #[test]
+    fn test_game_score_increment() {
+        let mut game = create_test_game();
+
+        let initial_score = game.score;
+        game.score += 10;
+
+        assert_eq!(game.score, initial_score + 10);
+    }
+
+    #[test]
+    fn test_game_pacman_initialization() {
+        let game = create_test_game();
+
+        // Check that Pac-Man was initialized
+        assert_eq!(game.pacman.traverser.direction, crate::entity::direction::Direction::Left);
+        // The traverser might start moving immediately, so we just check the direction
+        assert_eq!(game.pacman.traverser.direction, crate::entity::direction::Direction::Left);
+    }
+
+    #[test]
+    fn test_game_map_initialization() {
+        let game = create_test_game();
+
+        // Check that map was initialized
+        assert!(game.map.graph.node_count() > 0);
+        assert!(!game.map.grid_to_node.is_empty());
+
+        // Check that Pac-Man's starting position exists
+        let pacman_pos = game.map.find_starting_position(0);
+        assert!(pacman_pos.is_some());
+    }
+}