ca-apm-probe/test/test_modules/math.js

CA APM Node.js Agent monitors real-time health and performance of Node.js applications

var id = 0;

function Math() {
    ++id;
}

Math.prototype.add = function (x, y) {
    return x + y;
}

Math.prototype.subtract = function (x, y) {
    return x - y;
}

Math.prototype.compute = function (op, x, y, callback) {
    this.execute(op, x, y, callback);
}

Math.prototype.calculate = function (op, a, b) {
    var self = this;

    var executor = function (resolve, reject) {
        setTimeout(function () {
            var answer = 0;

            if (a < 0 || b < 0) {
                reject(new Error("Invalid Arguments: argument value should be >= 0"));
                return;
            }

            if (op === "add") {
                answer = self.add(a, b);
            }
            else if (op === "sub") {
                answer = self.subtract(a, b);
            }
            else {
                reject(new Error("Unsupported Operation!"));
                return;
            }
            resolve(answer);

        }, 1);
    };

    return new Promise(executor);
};

Math.prototype.execute = function (op, x, y, callback) {
    var self = this;

    setTimeout(function () {
        var answer = 0;

        if (x < 0 || y < 0) {
            callback(new Error("Invalid Arguments: argument value should be >= 0"));
            return;
        }

        if (op === "add") {
            answer = self.add(x, y);
        }
        else if (op === "sub") {
            answer = self.subtract(x, y);
        }
        else {
            callback(new Error("Unsupported Operation!"));
            return;
        }
        // now call the callback function
        callback(null, answer);

    }, 5)

};

module.exports = Math;