From fecf3f61d505abb136be329518eff2c44c8045f3 Mon Sep 17 00:00:00 2001
From: microshine <microshine@mail.ru>
Date: Mon, 1 Feb 2021 17:17:31 +0300
Subject: [PATCH] test: Add test for HMAC key derivation

---
 test/crypto.ts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/test/crypto.ts b/test/crypto.ts
index e5d51b0..246b496 100644
--- a/test/crypto.ts
+++ b/test/crypto.ts
@@ -39,4 +39,22 @@ context("Crypto", () => {
       ["verify"]), core.CryptoError);
   });
 
+  it("HKDF derive HMAC key", async () => {
+    const hkdf = await crypto.subtle.importKey("raw", new Uint8Array([1, 2, 3, 4, 5]), { name: "HKDF" }, false, ["deriveKey"]);
+    const hmac = await crypto.subtle.deriveKey({
+      name: "HKDF",
+      hash: "SHA-256",
+      info: new Uint8Array([1, 2, 3, 4, 5]),
+      salt: new Uint8Array([1, 2, 3, 4, 5]),
+    } as globalThis.HkdfParams,
+    hkdf,
+    {
+      name: "HMAC",
+      hash: "SHA-1",
+    } as globalThis.HmacImportParams,
+    false,
+    ["sign"]);
+    assert.strictEqual((hmac.algorithm as globalThis.HmacKeyAlgorithm).length, 512);
+  });
+
 });