chore: Reorganise workers tests (#9493)

1 files changed, 33 insertions, 0 deletions

diff --git a/cli/tests/workers/bench_startup.ts b/cli/tests/workers/bench_startup.ts
new file mode 100644
index 000000000..5fbf23b45
--- /dev/null
+++ b/cli/tests/workers/bench_startup.ts
@@ -0,0 +1,33 @@
+// Benchmark measures time it takes to start and stop a number of workers.
+const workerCount = 50;
+
+async function bench(): Promise<void> {
+  const workers: Worker[] = [];
+  for (let i = 1; i <= workerCount; ++i) {
+    const worker = new Worker(
+      new URL("bench_worker.ts", import.meta.url).href,
+      { type: "module" },
+    );
+    const promise = new Promise<void>((resolve): void => {
+      worker.onmessage = (e): void => {
+        if (e.data.cmdId === 0) resolve();
+      };
+    });
+    worker.postMessage({ cmdId: 0, action: 2 });
+    await promise;
+    workers.push(worker);
+  }
+  console.log("Done creating workers closing workers!");
+  for (const worker of workers) {
+    const promise = new Promise<void>((resolve): void => {
+      worker.onmessage = (e): void => {
+        if (e.data.cmdId === 3) resolve();
+      };
+    });
+    worker.postMessage({ action: 3 });
+    await promise;
+  }
+  console.log("Finished!");
+}
+
+bench();