Fixes #3795 (#3856)

Co-authored-by: Jarred Sumner <709451+Jarred-Sumner@users.noreply.github.com>

2 files changed, 37 insertions, 0 deletions

diff --git a/test/js/web/crypto/keeps-alive-fixture.js b/test/js/web/crypto/keeps-alive-fixture.js
new file mode 100644
index 000000000..0740923a5
--- /dev/null
+++ b/test/js/web/crypto/keeps-alive-fixture.js
@@ -0,0 +1,12 @@
+const algorithms = ["SHA-1", "SHA-256", "SHA-384", "SHA-512"];
+const data = [
+  "Hello World!",
+  "Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World!Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World! Hello World!",
+];
+for (let bytes of data) {
+  for (const algorithm of algorithms) {
+    crypto.subtle.digest(algorithm, Buffer.from(bytes)).then(data => {
+      console.log(Buffer.from(data).toString("hex"));
+    });
+  }
+}
diff --git a/test/js/web/crypto/web-crypto.test.ts b/test/js/web/crypto/web-crypto.test.ts
index b8155c3ba..006d48851 100644
--- a/test/js/web/crypto/web-crypto.test.ts
+++ b/test/js/web/crypto/web-crypto.test.ts
@@ -1,6 +1,31 @@
+import { spawnSync } from "bun";
 import { describe, expect, it } from "bun:test";
+import { bunEnv, bunExe } from "harness";
 
 describe("Web Crypto", () => {
+  // https://github.com/oven-sh/bun/issues/3795
+  it("keeps event loop alive", () => {
+    const { stdout, exitCode } = spawnSync({
+      cmd: [bunExe(), import.meta.resolveSync("./keeps-alive-fixture.js")],
+      env: bunEnv,
+    });
+
+    const lines = stdout.toString().trim().split("\n").sort();
+    const results = [
+      "2ef7bde608ce5404e97d5f042f95f89f1c232871",
+      "6b3e626d70787e3dc3f0bca509a7e1e5f6802643fde54a18d4353aa9b24ccb2fb874bbc8a70ff587df2bd6ed41471f82",
+      "7dc2af5ef620a4b1c8871371526b664512b82193",
+      "7f83b1657ff1fc53b92dc18148a1d65dfc2d4b1fa3d677284addd200126d9069",
+      "861844d6704e8573fec34d967e20bcfef3d424cf48be04e6dc08f2bd58c729743371015ead891cc3cf1c9d34b49264b510751b1ff9e537937bc46b5d6ff4ecc8",
+      "bf6873609ce720ec489bb2f5ae116716058c06cda7dc9a7e1dadee90da98e71aee22519505af61adbecd5b94bbefa855c2ede623e8b383bb179b150e25861441",
+      "bfd76c0ebbd006fee583410547c1887b0292be76d582d96c242d2a792723e3fd6fd061f9d5cfd13b8f961358e6adba4a",
+      "e1061f7858d68c3818ec9967ea1f7bf8e3c65f5603af95004bdfcb64b9ea4148",
+    ];
+
+    expect(exitCode).toBe(0);
+    expect(lines).toStrictEqual(results);
+  });
+
   it("has globals", () => {
     expect(crypto.subtle !== undefined).toBe(true);
     expect(CryptoKey.name).toBe("CryptoKey");