added function for addition

routes/route.js

@@ -8,6 +8,18 @@ router.get("/check", (req, res) => {
 
 router.post("add", (req, res) => {
   // Add logic here
+  let param1 = req.body.param1;
+  let param2 = req.body.param2;
+
+  res.json({
+    result: Math.pow(param1, param2),
+    meta: {
+      success: true,
+      message: `Calculated ${param1} + ${param2}`,
+      code: 200
+    }
+  });
+
 });
 
 router.post("/power", (req, res) => {

test/tests.js

@@ -44,6 +44,32 @@ describe("----------START TEST FOR app.js----------", () => {
       });
   });
 
+
+  it("Checks the POST /math/add", done => {
+    chai
+      .request(app)
+      .post("/math/add")
+      .send({ param1: 3, param2: 2 })
+      .end((err, res) => {
+        if (err) {
+          done(err);
+          process.exit(1);
+        } else {
+          res.body.result.should.be.a("number");
+          res.body.meta.success.should.be.a("boolean");
+          res.body.meta.message.should.be.a("string");
+          res.body.meta.code.should.be.a("number");
+
+          res.body.result.should.equal(5);
+
+          done();
+        }
+      });
+  });
+
+
+
+
   it("Checks the POST /math/power", done => {
     chai
       .request(app)