New Captcha Package added

packages/captcha/test/providers.test.ts

@@ -0,0 +1,44 @@
+import { describe, expect, test } from "bun:test";
+import { turnstileProvider } from "../src/providers/turnstile.ts";
+import { recaptchaProvider } from "../src/providers/recaptcha.ts";
+import { hcaptchaProvider } from "../src/providers/hcaptcha.ts";
+
+const okFetch = (payload: Record<string, unknown>) => async (_url: string | URL | Request, init?: RequestInit) => {
+  expect(init?.method).toBe("POST");
+  expect(init?.headers).toMatchObject({ "content-type": "application/x-www-form-urlencoded" });
+  return Response.json(payload);
+};
+
+describe("hosted providers", () => {
+  test("verifies Turnstile hostname and action", async () => {
+    const provider = turnstileProvider({
+      secretKey: "secret",
+      expectedHostnames: ["example.test"],
+      expectedAction: "signup",
+      fetch: okFetch({ success: true, hostname: "example.test", action: "signup" }) as typeof fetch,
+    });
+    expect(await provider.verify({ action: "signup", providerToken: "token" })).toMatchObject({ success: true, provider: "turnstile" });
+  });
+
+  test("maps provider duplicate failures", async () => {
+    const provider = recaptchaProvider({
+      secretKey: "secret",
+      fetch: okFetch({ success: false, "error-codes": ["timeout-or-duplicate"] }) as typeof fetch,
+    });
+    expect(await provider.verify({ action: "login", providerToken: "token" })).toMatchObject({ success: false, code: "already-used" });
+  });
+
+  test("sends hCaptcha site key when configured", async () => {
+    let submitted = "";
+    const provider = hcaptchaProvider({
+      secretKey: "secret",
+      siteKey: "site-key",
+      fetch: (async (_url, init) => {
+        submitted = String(init?.body);
+        return Response.json({ success: true, hostname: "example.test" });
+      }) as typeof fetch,
+    });
+    expect((await provider.verify({ action: "contact", providerToken: "token" })).success).toBe(true);
+    expect(submitted).toContain("sitekey=site-key");
+  });
+});