test: added k6 performance testing for REST API issuance

k6/issuance.js

@@ -0,0 +1,27 @@
+import http from 'k6/http';
+import { check } from 'k6';
+
+export const options = {
+    thresholds: {
+        http_req_failed: ['rate==0'], // not a single http request may fail
+        http_req_duration: ['p(95)<10'], // 95% of requests have to be below 10ms
+        checks: ['rate==1'], // all checks must pass
+    },
+    vus: 24,
+    duration: '60s',
+};
+
+export default function () {
+    const payload = `{"templateId":"VerifiableId","config":{"issuerDid":"did:key:z6Mkr6T1hhzQRt3ySK4SxMQAAgxNUprhx8VYZwk6nyHeN1kQ","subjectDid":"did:key:z6Mkr6T1hhzQRt3ySK4SxMQAAgxNUprhx8VYZwk6nyHeN1kQ"}}`
+
+    const res = http.post('http://127.0.0.1:7001/v1/credentials/issue', payload, {
+        headers: {
+            'Content-Type': 'application/json',
+        },
+    });
+
+    check(res, {
+        'is status 200': (r) => r.status === 200,
+        'verify JWT': (r) => r.body.startsWith("ey")
+    })
+}