+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +12x +12x +12x +1x +1x +1x + +1x +1x +1x +2x +1x +1x +1x +1x +1x +1x + | // const request = require("supertest");
+// const assert = require("assert");
+const express = require("express");
+
+const app = express();
+let requestCount = 0;
+
+// You have been given an express server which has a few endpoints.
+// Your task is to create a global middleware (app.use) which will
+// maintain a count of the number of requests made to the server in the global
+// requestCount variable
+
+app.use((req, res, next) => {
+ requestCount++;
+ console.log("This is a common middleware for all the routes");
+ next();
+});
+
+app.post("/user", function (req, res) {
+ res.status(200).json({ msg: "created dummy user" });
+});
+
+app.get("/requestCount", function (req, res) {
+ res.status(200).json({ requestCount });
+});
+
+// app.listen(3001, (_) => {
+// console.log("Server is listening on port 3000");
+// });
+module.exports = app;
+ |
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 +32 +33 +34 +35 +36 +37 +38 +39 +40 +41 +42 +43 +44 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +2x +1x +1x +1x +13x +13x +13x +13x +1x +1x +13x +13x +13x +1x +1x +1x +13x +1x +1x +1x + +1x +1x +1x +1x +1x +1x +1x + | // const request = require('supertest');
+// const assert = require('assert');
+const express = require("express");
+const app = express();
+// You have been given an express server which has a few endpoints.
+// Your task is to create a global middleware (app.use) which will
+// rate limit the requests from a user to only 5 request per second
+// If a user sends more than 5 requests in a single second, the server
+// should block them with a 404.
+// User will be sending in their user id in the header as 'user-id'
+// You have been given a numberOfRequestsForUser object to start off with which
+// clears every one second
+
+let numberOfRequestsForUser = {};
+setInterval(() => {
+ numberOfRequestsForUser = {};
+}, 1000);
+
+app.use((req, res, next) => {
+ const userId = req.headers["user-id"];
+ if (!userId) res.status(400).json("Missing user-id");
+ if (numberOfRequestsForUser[userId] === 5)
+ res
+ .status(404)
+ .json({ message: "Too many requests. Please try again after some time" });
+ if (!numberOfRequestsForUser[userId]) numberOfRequestsForUser[userId] = 0;
+ numberOfRequestsForUser[userId] += 1;
+ next();
+});
+
+app.get("/user", function (req, res) {
+ res.status(200).json({ name: "john" });
+});
+
+app.post("/user", function (req, res) {
+ res.status(200).json({ msg: "created dummy user" });
+});
+
+// app.listen(3000, "0.0.0.0", (_) => {
+// console.log("Server listening on port 0.0.0.0");
+// });
+
+module.exports = app;
+ |
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| 1 +2 +3 +4 +5 +6 +7 +8 +9 +10 +11 +12 +13 +14 +15 +16 +17 +18 +19 +20 +21 +22 +23 +24 +25 +26 +27 +28 +29 +30 +31 +32 +33 +34 +35 +36 | 1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +1x +11x + +1x +1x +1x + +1x +1x +1x +2x +1x +1x +1x +11x +11x +11x +1x +1x +1x +1x +1x +1x + | // const request = require("supertest");
+// const assert = require("assert");
+const express = require("express");
+
+const app = express();
+let errorCount = 0;
+
+// You have been given an express server which has a few endpoints.
+// Your task is to
+// 1. Ensure that if there is ever an exception, the end user sees a status code of 404
+// 2. Maintain the errorCount variable whose value should go up every time there is an exception in any endpoint
+
+app.get("/user", function (req, res) {
+ throw new Error("User not found");
+ res.status(200).json({ name: "john" });
+});
+
+app.post("/user", function (req, res) {
+ res.status(200).json({ msg: "created dummy user" });
+});
+
+app.get("/errorCount", function (req, res) {
+ res.status(200).json({ errorCount });
+});
+
+app.use((err, req, res, next) => {
+ // console.error(err);
+ errorCount++;
+ res.status(404).json({ error: "Something broke!!!" });
+});
+
+// app.listen(3000, "0.0.0.0", (_) => {
+// console.log("Server listening on port 0.0.0.0");
+// });
+module.exports = app;
+ |
+ Press n or j to go to the next uncovered block, b, p or k for the previous block. +
+ +| File | ++ | Statements | ++ | Branches | ++ | Functions | ++ | Lines | ++ |
|---|---|---|---|---|---|---|---|---|---|
| 03-errorcount.js | +
+
+ |
+ 94.28% | +33/35 | +75% | +3/4 | +100% | +0/0 | +94.28% | +33/35 | +