port: legacy sim accessors test to spirv

crates/coremem/src/sim/legacy/mod.rs

@@ -1154,6 +1154,7 @@ mod test {
         (energy_0, energy_1)
     }
 
+    // PORT-STATUS: done
     #[test]
     fn accessors() {
         let mut state = SimState::<R64, Static<R64>>::new(Index((15, 17, 19).into()), 1e-6);

crates/coremem/src/sim/spirv/mod.rs

@@ -616,6 +616,20 @@ mod test {
                 use super::backend_agnostic::*;
                 use super::*;
 
+                #[test]
+                fn accessors() {
+                    let size = Index::new(15, 17, 19);
+                    let mut state = SpirvSim::<R32, FullyGenericMaterial<R32>, $backend>::new(size, 1e-6);
+                    assert_eq!(state.width(), 15);
+                    assert_eq!(state.height(), 17);
+                    assert_eq!(state.depth(), 19);
+                    assert_eq!(state.time(), 0.0);
+                    // feat_size / C * courant: 1e-6 / 3e8 * 0.577
+                    assert_eq!(state.timestep(), 0.0000000000000019246651);
+                    state.step();
+                    assert_eq!(state.time(), state.timestep());
+                }
+
                 #[test]
                 fn test_smoke_small() {
                     do_smoke_small::<$backend>();