Add feature flag for slow tests (#797)

.github/workflows/ci.yaml

@@ -78,7 +78,7 @@ jobs:
       - uses: Swatinem/rust-cache@v2
       - uses: jetli/[email protected]
         with:
-          version: 'latest'
+          version: "latest"
       - run: cd crates/prover && wasm-pack test --node
         env:
           RUSTFLAGS: -C target-feature=+simd128
@@ -154,7 +154,7 @@ jobs:
         with:
           toolchain: nightly-2024-01-04
       - uses: Swatinem/rust-cache@v2
-      - run: cargo +nightly-2024-01-04 test --release -- --ignored
+      - run: cargo +nightly-2024-01-04 test --release --features="slow-tests"
 
   udeps:
     runs-on: ubuntu-latest

crates/prover/Cargo.toml

@@ -5,6 +5,7 @@ edition.workspace = true
 
 [features]
 parallel = ["rayon"]
+slow-tests = []
 
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 

crates/prover/src/examples/blake/air.rs

@@ -440,7 +440,7 @@ mod tests {
     use crate::examples::blake::air::{prove_blake, verify_blake};
 
     // Note: this test is slow. Only run in release.
-    #[ignore]
+    #[cfg_attr(not(feature = "slow-tests"), ignore)]
     #[test_log::test]
     fn test_simd_blake_prove() {
         // Note: To see time measurement, run test with

crates/prover/src/trace_generation/prove.rs

@@ -325,7 +325,7 @@ mod tests {
 
     // Ignored because it takes too long and too much memory (in the CI) to run.
     #[test]
-    #[ignore]
+    #[cfg_attr(not(feature = "slow-tests"), ignore)]
     fn test_trace_too_big() {
         const LOG_DOMAIN_SIZE: u32 = MAX_CIRCLE_DOMAIN_LOG_SIZE;
         let air = TestAir {