function MockAdobeDOM () {
    // ... any bookkeeping code you want here
}

MockAdobeDOM.prototype.addField = addField;
MockAdobeDOM.prototype.nameAddress = nameAddress;

function addField (fieldName, fieldType, thePage, myRec) {
    // return mock field object you are asking for
}

function nameAddress(page, xpos, ypos) {
    // ... your code here ...
}