test syn without REALLY testing but at least panics

src/syn.rs

@@ -70,3 +70,27 @@ impl Syn {
         };
     }
 }
+
+#[cfg(test)]
+mod test {
+   use super::*;
+
+   #[test]
+   fn test_new_real() {
+      Syn::new(false, "super_small_font.sf2".to_string(), 44100);
+   }
+
+   #[test]
+   fn test_text() {
+      let mut syn = Syn::new(true, ".sf2".to_string(), 1);
+
+      syn.note_on(1, 2, 3);
+      syn.note_on(2, 3, 4);
+
+      syn.note_off(2, 3);
+
+      let mut buffer1 = Vec::<f32>::new();
+      let mut buffer2 = Vec::<f32>::new();
+      syn.render(&mut buffer1, &mut buffer2);
+   }
+}