ci: test parallel encoder features

Author: BartWaardenburg

.github/scripts/workflow-policy.test.mjs

@@ -5,6 +5,7 @@ import { describe, it } from "node:test";
 
 const ROOT_URL = new URL("../../", import.meta.url);
 const WORKFLOWS_URL = new URL("workflows/", new URL("../", import.meta.url));
+const CI_WORKFLOW_URL = new URL("ci.yml", WORKFLOWS_URL);
 
 const trackedPackageLocks = async () => {
   const tracked = execFileSync("git", ["ls-files", "--", ":(glob)**/package-lock.json"], {
@@ -53,3 +54,12 @@ describe("JavaScript dependency policy", () => {
     }
   });
 });
+
+describe("Rust feature coverage", () => {
+  it("tests both parallel encoders in Linux CI", async () => {
+    const workflow = await readFile(CI_WORKFLOW_URL, "utf8");
+
+    assert.match(workflow, /cargo test -p srcmap-codec --features parallel\b/);
+    assert.match(workflow, /cargo test -p srcmap-generator --features parallel\b/);
+  });
+});

.github/workflows/ci.yml

@@ -50,6 +50,21 @@ jobs:
       - name: Check for uncommitted changes
         run: git diff --exit-code
 
+  parallel-features:
+    name: Parallel features
+    runs-on: ubuntu-latest
+    timeout-minutes: 15
+    permissions:
+      contents: read
+    steps:
+      - uses: actions/checkout@df4cb1c069e1874edd31b4311f1884172cec0e10 # v6.0.3
+      - uses: dtolnay/rust-toolchain@631a55b12751854ce901bb631d5902ceb48146f7
+      - uses: Swatinem/rust-cache@e18b497796c12c097a38f9edb9d0641fb99eee32 # v2
+      - name: Test codec parallel feature
+        run: cargo test -p srcmap-codec --features parallel
+      - name: Test generator parallel feature
+        run: cargo test -p srcmap-generator --features parallel
+
   doc:
     name: Documentation
     runs-on: ubuntu-latest