Unit Testing 01. Request Validator

function solve(obj) {
    const validMethods = ['GET', 'POST', 'DELETE', 'CONNECT'];
    const uriRegex = /^[A-z0-9.]+$/gm;
    const validVersion = ['HTTP/0.9', 'HTTP/1.0', 'HTTP/1.1', 'HTTP/2.0'];
    const messageRegex = /(^[^<>&\\'"]*$)/gm;

    if(!(obj.method && validMethods.includes(obj.method))) {
        throw new Error('Invalid request header: Invalid Method');
    }

    if(!(obj.uri && (obj.uri.match(uriRegex) || obj.uri == '*'))) {
        throw new Error('Invalid request header: Invalid URI');
    }

    if(!(obj.version && validVersion.includes(obj.version))) {
        throw new Error('Invalid request header: Invalid Version');
    }

    if(!(obj.hasOwnProperty('message') && obj.message.match(messageRegex))) {
        throw new Error('Invalid request header: Invalid Message');
    }

    return obj;
}