Update fuzzing test

test/jazzer-fuzz-test.js

@@ -0,0 +1,20 @@
+const { FuzzedDataProvider } = require('@jazzer.js/core');
+const UAParser = require('ua-parser-js');
+const UA_MAX_LENGTH = 350;
+
+module.exports.fuzz = function (buffer) {
+    const data = new FuzzedDataProvider(buffer);
+    const userAgent = data.consumeString(UA_MAX_LENGTH, 'utf-8', true);
+    const start = process.hrtime();
+    
+    UAParser(userAgent);
+
+    const elapsed = process.hrtime(start);
+    const milisec = (elapsed[0]*1e3+elapsed[1]*1e-6).toFixed(3);
+    if (milisec > 1000) {
+        throw new Error(
+            `Potential ReDoS\n` +
+            `Time taken: ${milisec} ms.\n` +
+            `User agent: ${userAgent}`);
+    }
+};