chore: [spv-in] atomics snapshot tests (gfx-rs#6692)

* chore: [spv-in] clean up atomic upgrade tests

* add output test files

* update changelog

* remove extraneous snapshot out files

CHANGELOG.md

@@ -107,6 +107,7 @@ By @ErichDonGubler in [#6456](https://github.com/gfx-rs/wgpu/pull/6456), [#6148]
 
 #### Naga
 
+- Clean up tests for atomic operations support in SPIR-V frontend. By @schell in [#6692](https://github.com/gfx-rs/wgpu/pull/6692)
 - Fix an issue where `naga` CLI would incorrectly skip the first positional argument when `--stdin-file-path` was specified. By @ErichDonGubler in [#6480](https://github.com/gfx-rs/wgpu/pull/6480).
 - Fix textureNumLevels in the GLSL backend. By @magcius in [#6483](https://github.com/gfx-rs/wgpu/pull/6483).
 - Support 64-bit hex literals and unary operations in constants [#6616](https://github.com/gfx-rs/wgpu/pull/6616).

naga/src/front/spv/mod.rs

@@ -6057,89 +6057,3 @@ mod test {
         let _ = super::parse_u8_slice(&bin, &Default::default()).unwrap();
     }
 }
-
-#[cfg(all(test, feature = "wgsl-in", wgsl_out))]
-mod test_atomic {
-    fn atomic_test(bytes: &[u8]) {
-        let _ = env_logger::builder().is_test(true).try_init();
-        let m = crate::front::spv::parse_u8_slice(bytes, &Default::default()).unwrap();
-
-        let mut wgsl = String::new();
-
-        for (vflags, name) in [
-            (crate::valid::ValidationFlags::empty(), "empty"),
-            (crate::valid::ValidationFlags::all(), "all"),
-        ] {
-            log::info!("validating with flags - {name}");
-            let mut validator = crate::valid::Validator::new(vflags, Default::default());
-            match validator.validate(&m) {
-                Err(e) => {
-                    log::error!("SPIR-V validation {}", e.emit_to_string(""));
-                    log::info!("types: {:#?}", m.types);
-                    panic!("validation error");
-                }
-                Ok(i) => {
-                    wgsl = crate::back::wgsl::write_string(
-                        &m,
-                        &i,
-                        crate::back::wgsl::WriterFlags::empty(),
-                    )
-                    .unwrap();
-                    log::info!("wgsl-out:\n{wgsl}");
-                }
-            };
-        }
-
-        let m = match crate::front::wgsl::parse_str(&wgsl) {
-            Ok(m) => m,
-            Err(e) => {
-                log::error!("round trip WGSL validation {}", e.emit_to_string(&wgsl));
-                panic!("invalid module");
-            }
-        };
-        let mut validator =
-            crate::valid::Validator::new(crate::valid::ValidationFlags::all(), Default::default());
-        if let Err(e) = validator.validate(&m) {
-            log::error!("{}", e.emit_to_string(&wgsl));
-            panic!("invalid generated wgsl");
-        }
-    }
-
-    #[test]
-    fn atomic_i_inc() {
-        atomic_test(include_bytes!(
-            "../../../tests/in/spv/atomic_i_increment.spv"
-        ));
-    }
-
-    #[test]
-    fn atomic_load_and_store() {
-        atomic_test(include_bytes!(
-            "../../../tests/in/spv/atomic_load_and_store.spv"
-        ));
-    }
-
-    #[test]
-    fn atomic_exchange() {
-        atomic_test(include_bytes!("../../../tests/in/spv/atomic_exchange.spv"));
-    }
-
-    #[test]
-    fn atomic_compare_exchange() {
-        atomic_test(include_bytes!(
-            "../../../tests/in/spv/atomic_compare_exchange.spv"
-        ));
-    }
-
-    #[test]
-    fn atomic_i_decrement() {
-        atomic_test(include_bytes!(
-            "../../../tests/in/spv/atomic_i_decrement.spv"
-        ));
-    }
-
-    #[test]
-    fn atomic_i_add_and_sub() {
-        atomic_test(include_bytes!("../../../tests/in/spv/atomic_i_add_sub.spv"));
-    }
-}