diff --git a/src/integer.rs b/src/integer.rs
index 29755b7..6a9a231 100644
--- a/src/integer.rs
+++ b/src/integer.rs
@@ -1033,7 +1033,7 @@ impl std::fmt::Display for Planar64Affine3{
 #[test]
 fn test_sqrt(){
 	let r=Planar64::int(400);
-	println!("r{}",r.get());
+	assert_eq!(1717986918400,r.get());
 	let s=r.sqrt();
-	println!("s{}",s.get());
+	assert_eq!(85899345920,s.get());
 }
\ No newline at end of file
diff --git a/src/model_physics.rs b/src/model_physics.rs
index 250398a..2a0edc0 100644
--- a/src/model_physics.rs
+++ b/src/model_physics.rs
@@ -547,5 +547,5 @@ impl MeshQuery<MinkowskiFace,MinkowskiDirectedEdge,MinkowskiVert> for MinkowskiM
 fn build_me_a_cube(){
 	let unit_cube=crate::primitives::unit_cube();
 	let mesh=PhysicsMesh::from(&unit_cube);
-	println!("mesh={:?}",mesh);
+	//println!("mesh={:?}",mesh);
 }
\ No newline at end of file
diff --git a/src/worker.rs b/src/worker.rs
index 4a79308..214157a 100644
--- a/src/worker.rs
+++ b/src/worker.rs
@@ -175,8 +175,8 @@ impl<'a,Task:Send+'a> INWorker<'a,Task>{
 
 #[test]//How to run this test with printing: cargo test --release -- --nocapture
 fn test_worker() {
-	println!("hiiiii");
 	// Create the worker thread
+	let test_body=crate::physics::Body::new(crate::integer::Planar64Vec3::ONE,crate::integer::Planar64Vec3::ONE,crate::integer::Planar64Vec3::ONE,crate::integer::Time::ZERO);
 	let worker=QRWorker::new(crate::physics::Body::default(),
 		|_|crate::physics::Body::new(crate::integer::Planar64Vec3::ONE,crate::integer::Planar64Vec3::ONE,crate::integer::Planar64Vec3::ONE,crate::integer::Time::ZERO)
 	);
@@ -203,7 +203,7 @@ fn test_worker() {
 	};
 	worker.send(task).unwrap();
 
-	println!("value={}",worker.grab_clone());
+	//assert_eq!(test_body,worker.grab_clone());
 
 	// wait long enough to see print from final task
 	thread::sleep(std::time::Duration::from_millis(10));