test: add tests for wasm (#1951)

test/fixture/nitro.config.ts

@@ -83,6 +83,7 @@ export default defineNitroConfig({
   experimental: {
     openAPI: true,
     asyncContext: true,
+    wasm: true,
   },
   cloudflare: {
     pages: {

test/fixture/routes/wasm/sum.ts

@@ -0,0 +1,15 @@
+export default defineLazyEventHandler(async () => {
+  // @ts-ignore
+  const { sum } = await import("~/wasm/sum.wasm")
+    .then((wasm) => wasm.default({}))
+    .then((r) => r.instance.exports);
+
+  // @ts-ignore
+  // const { sum } = await import("~/wasm/sum.wasm")
+  //   .then((mod) => WebAssembly.instantiate(mod.default, {}))
+  //   .then((instance) => instance.exports);
+
+  return eventHandler((event) => {
+    return `2+3=${sum(2, 3)}`;
+  });
+});

test/fixture/wasm/package.json

@@ -0,0 +1,9 @@
+{
+  "private": true,
+  "scripts": {
+    "build:sum": "npx --yes --package=assemblyscript -c 'asc ./sum.asc.ts -o sum.wasm'",
+    "buld": "npm run build:sum",
+    "test:sum": "NODE_OPTIONS='--experimental-wasm-modules' node -e 'import(`./sum.wasm`).then(mod => console.log(mod.sum(2,3)))'",
+    "test": "npm run build:sum && npm run test:sum"
+  }
+}

test/fixture/wasm/sum.asc.ts

@@ -0,0 +1,6 @@
+// @ts-nocheck
+// https://www.assemblyscript.org
+
+export function sum(a: i32, b: i32): i32 {
+  return a + b;
+}

test/tests.ts

@@ -8,6 +8,7 @@ import { expect, it, afterAll, beforeAll, describe } from "vitest";
 import { fileURLToPath } from "mlly";
 import { joinURL } from "ufo";
 import { defu } from "defu";
+import { isWindows } from "std-env";
 import * as _nitro from "../src";
 import type { Nitro } from "../src";
 
@@ -629,4 +630,13 @@ export function testNitro(
       );
     });
   });
+
+  describe("wasm", () => {
+    it.skipIf(ctx.isWorker || ctx.preset === "deno-server" || isWindows)(
+      "sum works",
+      async () => {
+        expect((await callHandler({ url: "/wasm/sum" })).data).toBe("2+3=5");
+      }
+    );
+  });
 }