Add MockedHelloWorld fuzz target with uSocketsMock.c

fuzzing/MockedHelloWorld.cpp

@@ -0,0 +1,22 @@
+#include "App.h"
+
+#include "helpers.h"
+
+/* This function pushes data to the uSockets mock */
+extern void us_loop_read_mocked_data(struct us_loop *loop, char *data, unsigned int size);
+
+/* HelloWorld */
+auto app = uWS::App().get("/*", [](auto *res, auto *req) {
+	res->end("Hello world!");
+}).listen(9001, [](auto *token) {
+    if (token) {
+        std::cout << "Listening on port " << 9001 << std::endl;
+    }
+});
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) {
+
+    us_loop_read_mocked_data((struct us_loop *) uWS::Loop::get(), (char *) makePadded(data, size), size);
+
+    return 0;
+}