Implemented test for sum, subtract, divide and multiply route.

README.md

@@ -0,0 +1,3 @@
+## CALCULATE_API
+
+Assignment 1 learning unit testing and integration testing at AltSchool Africa

app.js

@@ -1,46 +1,48 @@
-const http = require('http');
-const mathM = require('./math')
-
+const http = require("http");
+const mathM = require("./math");
 
 const PORT = 3000;
 
 const handleRequest = (req, res) => {
-    const {url, method } = req;
-    const body = [];
-    let result
-
-    if (url === '/calculate' && method === 'POST') {
-        req.on('data', (chunk) => {
-            body.push(chunk);
-        });
-
-        req.on('end', () => {
-            const parsedBody = Buffer.concat(body).toString()
-            const bodyObject = JSON.parse(parsedBody);
-
-            const { action, num1, num2 } = bodyObject
-
-            if (action === 'sum') {
-                result = mathM.add(num1, num2)
-            } else if (action === 'subtract') {
-                result = mathM.subtract(num1, num2)
-            } else if (action === 'divide') {
-                result = mathM.divide(num1, num2)
-            } else if (action === 'multiply') {
-                result = mathM.multiply(num1, num2)
-            }
-
-            res.end(JSON.stringify({ result }))
-        })
-
-
-    }
-}
+	const { url, method } = req;
+	const body = [];
+	let result;
+
+	if (url === "/calculate" && method === "POST") {
+		req.on("data", (chunk) => {
+			body.push(chunk);
+		});
+
+		req.on("end", () => {
+			const parsedBody = Buffer.concat(body).toString();
+			const bodyObject = JSON.parse(parsedBody);
+
+			const { action, num1, num2 } = bodyObject;
+
+			if (action === "sum") {
+				result = mathM.add(num1, num2);
+			} else if (action === "subtract") {
+				result = mathM.subtract(num1, num2);
+			} else if (action === "divide") {
+				result = mathM.divide(num1, num2);
+			} else if (action === "multiply") {
+				result = mathM.multiply(num1, num2);
+			}
+
+			res.setHeader("Content-Type", "application/json");
+			res.writeHead(200);
+			res.end(JSON.stringify({ result }));
+		});
+	} else if (url === "/" && method === "GET") {
+		res.setHeader("Content-Type", "application/json");
+		res.writeHead(200).end(JSON.stringify({ message: "Welcome to Calculate API" }));
+	}
+};
 
 const server = http.createServer(handleRequest);
 
 server.listen(PORT, () => {
-    console.log(`Server is listening on port: ${PORT}`)
-})
+	console.log(`Server is listening on port: ${PORT}`);
+});
 
 module.exports = server;