github: Run simulator on pull requests

.github/workflows/rust.yml

@@ -64,6 +64,17 @@ jobs:
         run: curl https://rustwasm.github.io/wasm-pack/installer/init.sh -sSf | sh
       - run: wasm-pack build --target nodejs bindings/wasm
 
+  simulator:
+    runs-on: blacksmith-4vcpu-ubuntu-2404
+    timeout-minutes: 20
+    steps:
+      - uses: actions/checkout@v3
+      - uses: useblacksmith/rust-cache@v3
+        with:
+          prefix-key: "v1-rust" # can be updated if we need to reset caches due to non-trivial change in the dependencies (for example, custom env var were set for single workspace project)
+      - name: Install the project
+        run: ./scripts/run-sim --iterations 50
+
   test-limbo:
     runs-on: blacksmith-4vcpu-ubuntu-2404
     timeout-minutes: 20

scripts/run-sim

@@ -2,6 +2,31 @@
 
 set -e
 
-while true; do
-    cargo run -p limbo_sim
+iterations=""
+while [[ $# -gt 0 ]]; do
+    case $1 in
+        --iterations)
+            iterations="$2"
+            shift 2
+            ;;
+        *)
+            echo "Unknown option: $1"
+            echo "Usage: $0 [--max-iterations N]"
+            exit 1
+            ;;
+    esac
 done
+
+if [[ -n "$iterations" ]]; then
+    echo "Running limbo_sim for $iterations iterations..."
+    for ((i=1; i<=iterations; i++)); do
+        echo "Iteration $i of $iterations"
+        cargo run -p limbo_sim
+    done
+    echo "Completed $iterations iterations"
+else
+    echo "Running limbo_sim in infinite loop..."
+    while true; do
+        cargo run -p limbo_sim
+    done
+fi