Update

utils_test.ts

@@ -1,6 +1,6 @@
 import { assertEquals } from "std/testing/asserts.ts";
 import { check_running } from "./pid_check.ts";
-import { promiseState, sleep } from "./utils.ts";
+import { asyncFilter, promiseState, PromiseStatus, sleep } from "./utils.ts";
 
 Deno.test("promiseState_test", async () => {
     const p1 = new Promise((res) => setTimeout(() => res(100), 100));
@@ -26,3 +26,19 @@ Deno.test("Pid_Test", async () => {
         assertEquals(await check_running(Deno.pid), true);
     }
 });
+
+Deno.test("asyncFilter_test", async () => {
+    const t = [3, 5];
+    const r = await asyncFilter(t, async (t) => {
+        await sleep(10);
+        return t === 3;
+    });
+    assertEquals(r, [3]);
+    const e = [new Promise<number>((res) => setTimeout(() => res(100), 100))];
+    const v = await asyncFilter(e, async (t) => {
+        const s = await promiseState(t);
+        return s.status === PromiseStatus.Pending;
+    });
+    assertEquals(v, e);
+    await Promise.allSettled(e);
+});