adjust the test

src/lib.rs

@@ -144,15 +144,17 @@ mod tests {
         assert!(works5());
     }
 
-    extern crate std;
     #[test]
+    #[allow(clippy::assertions_on_constants)]
     fn test_usage_within_a_function() {
         cfg_if! {if #[cfg(debug_assertions)] {
-            std::println!("debug");
-            std::println!("debug2");
+            // we want to put more than one thing here to make sure that they
+            // all get configured properly.
+            assert!(cfg!(debug_assertions));
+            assert_eq!(4, 2+2);
         } else {
-            std::println!("release");
-            std::println!("release2");
+            assert!(works1().is_some());
+            assert_eq!(10, 5+5);
         }}
     }
 }