test(auth): add test for getJwks helper

Author: jescalada

test/testJwtAuthHandler.test.js

@@ -0,0 +1,29 @@
+const { expect } = require('chai');
+const sinon = require('sinon');
+const axios = require('axios');
+const { getJwks } = require('../src/service/passport/jwtUtils');
+
+describe('getJwks', () => {
+  it('should fetch JWKS keys from authority', async () => {
+    const jwksResponse = { keys: [{ kid: 'test-key', kty: 'RSA', n: 'abc', e: 'AQAB' }] };
+
+    const getStub = sinon.stub(axios, 'get');
+    getStub.onFirstCall().resolves({ data: { jwks_uri: 'https://mock.com/jwks' } });
+    getStub.onSecondCall().resolves({ data: jwksResponse });
+
+    const keys = await getJwks('https://mock.com');
+    expect(keys).to.deep.equal(jwksResponse.keys);
+
+    getStub.restore();
+  });
+
+  it('should throw error if fetch fails', async () => {
+    const stub = sinon.stub(axios, 'get').rejects(new Error('Network fail'));
+    try {
+      await getJwks('https://fail.com');
+    } catch (err) {
+      expect(err.message).to.equal('Failed to fetch JWKS');
+    }
+    stub.restore();
+  });
+});