test: add tons of tests for all easy submodules

src/audio.rs

@@ -94,3 +94,115 @@ impl Audio {
         self.muted
     }
 }
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::Once;
+
+    static INIT: Once = Once::new();
+
+    fn init_sdl() -> Result<(), String> {
+        INIT.call_once(|| {
+            if let Err(e) = sdl2::init() {
+                eprintln!("Failed to initialize SDL2: {}", e);
+            }
+        });
+        Ok(())
+    }
+
+    #[test]
+    fn test_sound_assets_array() {
+        assert_eq!(SOUND_ASSETS.len(), 4);
+        assert_eq!(SOUND_ASSETS[0], Asset::Wav1);
+        assert_eq!(SOUND_ASSETS[1], Asset::Wav2);
+        assert_eq!(SOUND_ASSETS[2], Asset::Wav3);
+        assert_eq!(SOUND_ASSETS[3], Asset::Wav4);
+    }
+
+    #[test]
+    fn test_audio_asset_paths() {
+        // Test that all sound assets have valid paths
+        for asset in SOUND_ASSETS.iter() {
+            let path = asset.path();
+            assert!(!path.is_empty());
+            assert!(path.contains("sound/waka/"));
+            assert!(path.ends_with(".ogg"));
+        }
+    }
+
+    // Only run SDL2-dependent tests if SDL2 initialization succeeds
+    #[test]
+    fn test_audio_basic_functionality() {
+        if let Err(_) = init_sdl() {
+            eprintln!("Skipping SDL2-dependent tests due to initialization failure");
+            return;
+        }
+
+        // Test basic audio creation
+        let audio = Audio::new();
+        assert_eq!(audio.is_muted(), false);
+        assert_eq!(audio.next_sound_index, 0);
+        assert_eq!(audio.sounds.len(), 4);
+    }
+
+    #[test]
+    fn test_audio_mute_functionality() {
+        if let Err(_) = init_sdl() {
+            eprintln!("Skipping SDL2-dependent tests due to initialization failure");
+            return;
+        }
+
+        let mut audio = Audio::new();
+
+        // Test mute/unmute
+        assert_eq!(audio.is_muted(), false);
+        audio.set_mute(true);
+        assert_eq!(audio.is_muted(), true);
+        audio.set_mute(false);
+        assert_eq!(audio.is_muted(), false);
+    }
+
+    #[test]
+    fn test_audio_sound_rotation() {
+        if let Err(_) = init_sdl() {
+            eprintln!("Skipping SDL2-dependent tests due to initialization failure");
+            return;
+        }
+
+        let mut audio = Audio::new();
+        let initial_index = audio.next_sound_index;
+
+        // Test sound rotation
+        for i in 0..4 {
+            audio.eat();
+            assert_eq!(audio.next_sound_index, (initial_index + i + 1) % 4);
+        }
+
+        assert_eq!(audio.next_sound_index, initial_index);
+    }
+
+    #[test]
+    fn test_audio_sound_index_bounds() {
+        if let Err(_) = init_sdl() {
+            eprintln!("Skipping SDL2-dependent tests due to initialization failure");
+            return;
+        }
+
+        let audio = Audio::new();
+        assert!(audio.next_sound_index < audio.sounds.len());
+    }
+
+    #[test]
+    fn test_audio_default_impl() {
+        if let Err(_) = init_sdl() {
+            eprintln!("Skipping SDL2-dependent tests due to initialization failure");
+            return;
+        }
+
+        let audio = Audio::default();
+        assert_eq!(audio.is_muted(), false);
+        assert_eq!(audio.next_sound_index, 0);
+        assert_eq!(audio.sounds.len(), 4);
+    }
+}