feat: support EXAT and PXAT options of the SET command

command.ts

@@ -117,6 +117,18 @@ export type StralgoTarget = "KEYS" | "STRINGS";
 export interface SetOpts {
   ex?: number;
   px?: number;
+  /**
+   * Sets `EXAT` option.
+   *
+   * `EXAT` option was added in Redis v6.2.
+   */
+  exat?: number;
+  /**
+   * Sets `PXAT` option.
+   *
+   * `PXAT` option was added in Redis v6.2.
+   */
+  pxat?: number;
   keepttl?: boolean;
   /**
    * Enables `GET` option.

redis.ts

@@ -1364,14 +1364,20 @@ class RedisImpl implements Redis {
       | SetWithModeOpts,
   ) {
     const args: RedisValue[] = [key, value];
-    if (opts?.ex !== undefined) {
+    if (opts?.ex != null) {
       args.push("EX", opts.ex);
-    } else if (opts?.px !== undefined) {
+    } else if (opts?.px != null) {
       args.push("PX", opts.px);
+    } else if (opts?.exat != null) {
+      args.push("EXAT", opts.exat);
+    } else if (opts?.pxat != null) {
+      args.push("PXAT", opts.pxat);
     }
+    // TODO: Isn't `KEEPTTL` option exclusive with `EX`, `PX`, etc.?
     if (opts?.keepttl) {
       args.push("KEEPTTL");
     }
+
     let isAbleToReturnNil = false;
     if ((opts as SetWithModeOpts)?.mode) {
       args.push((opts as SetWithModeOpts).mode);

tests/commands/string.ts

@@ -8,7 +8,11 @@ import {
   describe,
   it,
 } from "../../deps/std/testing.ts";
-import type { Connector, TestServer } from "../test_util.ts";
+import {
+  type Connector,
+  type TestServer,
+  usesRedisVersion,
+} from "../test_util.ts";
 import type { Redis } from "../../mod.ts";
 
 export function stringTests(
@@ -205,6 +209,20 @@ export function stringTests(
       assertEquals(v2, null);
       assertType<IsNullable<typeof v2>>(true);
     });
+
+    it("supports `EXAT` option", async () => {
+      const t = Math.floor(new Date().valueOf() / 1000);
+      await client.set("setWithEXAT", "foo", { exat: t });
+      const ttl = await client.ttl("setWithEXAT");
+      assertEquals(t, ttl);
+    });
+
+    it("supports `PXAT` option", async () => {
+      const t = new Date().valueOf();
+      await client.set("setWithPXAT", "bar", { pxat: t });
+      const ttl = await client.ttl("setWithPXAT");
+      assertEquals(t, ttl);
+    });
   });
 
   it("setbit", async () => {
@@ -244,7 +262,7 @@ export function stringTests(
 
   it("stralgo", {
     // NOTE(#454): STRALGO has been dropped
-    ignore: !Deno.env.get("REDIS_VERSION")?.startsWith("6."),
+    ignore: !usesRedisVersion("6"),
   }, async () => {
     await client.set("a", "Hello");
     await client.set("b", "Deno!");

tests/test_util.ts

@@ -117,3 +117,7 @@ function tempPath(fileName: string): string {
   const url = new URL(`./tmp/${fileName}`, import.meta.url);
   return url.pathname;
 }
+
+export function usesRedisVersion(version: "6" | "7"): boolean {
+  return !!Deno.env.get("REDIS_VERSION")?.startsWith(`${version}.`);
+}