simpleapi

app.js

var express = require("express");
var bodyParser = require("body-parser");
var app = express();

app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: true }));

app.get("/", function(req, res) {
    res.status(200).send("Welcome to our restful API");
});

var server = app.listen(3000, function() {
    console.log("app running on port.", server.address().port);
});

function sum(x, y) {
    return x + y;
}

module.exports = sum;

app_test.js

var test = require("tape");
var sum_test = require("../app.js");

test("sum test", function(t) {
    var s = sum_test(3, 4);
    t.equal(s, 7);
    t.end();
});

test("sum negative test", function(t) {
    var s = sum_test(-3, -4);
    t.equal(s, -7);
    t.end();
});