Assignments week 2 Oleksandr Starshynov

hackyourtemperature/__tests__/app.test.js

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+import { server } from "../server.js";
+import app from "../app.js";
+import supertest from "supertest";
+
+const request = supertest(app);
+
+
+describe("POST /", () => {
+    it("check if city name is valid", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": "London"});
+        expect(response.status).toBe(200);
+    });
+
+    it("check if city name is missing", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": ""});
+        expect(response.status).toBe(400)
+    });
+
+    it("check if city name is wrong", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": "Londondondon"});
+        expect(response.body).toEqual({ error: "API error" });
+    });
+
+    it("check if request body is a string", async () => {
+        const response = await request
+            .post("/weather")
+            .send({"cityName": "London"})
+            .set("Content-Type", "application/json");
+        expect(response.status).toBe(200);
+    });
+
+    it("check if the temperature is a number", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": "London"});
+        const fetchApi = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=London&appid=c34f56e7a569f2c2cf3e24aceac5ddc8&units=metric`);
+        const data = await fetchApi.json();
+        expect(typeof data.main.temp).toBe("number");
+    });
+
+    it("check if the temperature is a valid number", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": "Ondangwa"});
+        const fetchApi = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=Ondangwa&appid=c34f56e7a569f2c2cf3e24aceac5ddc8&units=metric`);
+        const data = await fetchApi.json();
+        expect(data.main.temp).toBeGreaterThanOrEqual(-90);
+        expect(data.main.temp).toBeLessThanOrEqual(57);
+    });
+
+    it("check if fetch API is ok", async () => {
+        const response = await request
+            .post('/weather')
+            .send({"cityName": "London"});
+        const fetchApi = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=London&appid=c34f56e7a569f2c2cf3e24aceac5ddc8&units=metric`);
+        expect(fetchApi.status).toBe(200)
+    });
+});
+
+afterAll(() => {
+    server.close();
+});

hackyourtemperature/app.js

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+import express from "express";
+import { keys } from "./sources/keys.js";
+import fetch from "node-fetch";
+import { engine } from "express-handlebars";
+
+const app = express();
+
+app.use(express.json())
+
+app.post('/weather', async (req, res) => {
+  const cityName = req.body.cityName;
+
+  if(!cityName) {
+    return res.status(400).json({weatherText: "City is not found!" })
+  }
+
+  try {
+    const response = await fetch(`https://api.openweathermap.org/data/2.5/weather?q=${cityName}&appid=${keys.API_KEY}&units=metric`);
+    if (!response.ok) {
+      return res.status(response.status).json({error: "API error"});
+    }
+    const data = await response.json();
+    return res.status(200).send(`It is ${data.main.temp}°C in ${cityName}`)
+  } 
+  catch {
+    console.error("Error fetching data");
+    res.status(500).json({ error: "Internal server error" });
+  }
+});
+
+export default app;

hackyourtemperature/babel.config.cjs

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+module.exports = {
+  presets: [
+    [
+      // This is a configuration, here we are telling babel what configuration to use
+      "@babel/preset-env",
+      {
+        targets: {
+          node: "current",
+        },
+      },
+    ],
+  ],
+};

hackyourtemperature/jest.config.js

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+export default {
+  // Tells jest that any file that has 2 .'s in it and ends with either js or jsx should be run through the babel-jest transformer
+  transform: {
+    "^.+\\.jsx?$": "babel-jest",
+  },
+  // By default our `node_modules` folder is ignored by jest, this tells jest to transform those as well
+  transformIgnorePatterns: [],
+};

hackyourtemperature/package.json

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+{
+  "name": "hackyourtemperature",
+  "version": "1.0.0",
+  "main": "server.js",
+  "type": "module",
+  "scripts": {
+    "start": "node server.js",
+    "dev": "nodemon server.js",
+    "test": "jest"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "description": "",
+  "dependencies": {
+    "express": "^4.21.1",
+    "express-handlebars": "^8.0.1",
+    "node-fetch": "^3.3.2"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.26.0",
+    "babel-jest": "^29.7.0",
+    "jest": "^29.7.0",
+    "nodemon": "^3.1.7",
+    "supertest": "^7.1.0"
+  }
+}

hackyourtemperature/server.js

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+import app from './app.js';
+
+const port = 3000;
+
+export const server = app.listen(port, () => {
+  console.log(`App listening on port ${port}`);
+});

hackyourtemperature/sources/keys.js

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+export const keys = {API_KEY: "c34f56e7a569f2c2cf3e24aceac5ddc8"};