@zargu/couchdb-designer/src/testing/views/viewUtils.js

Create and testing couchdb design document form directory structure.

const jokerEquals = (a,b) => {
    let aType = a === null ? 'null' : Array.isArray(a) ? 'array' : typeof a;
    let bType = b === null ? 'null' : Array.isArray(b) ? 'array' : typeof b;
    if(aType === bType){
        switch(aType){
            case 'undefined':
            case 'null': 
                return true;
            case 'boolean':
            case 'number':
            case 'string':
                return a === b;
            case 'array':
                return a.length === b.length && a.every((value,index) => jokerEquals(value,b[index]));
            case 'object':
                let aKeys = Object.keys(a);
                let bKeys = Object.keys(b);
                return aKeys.every((key,index) => key === bKeys[index]) && aKeys.every((key) => jokerEquals(a[key], b[key]));
        }
    }else{
        return false;
    }
}


const validateViewOptions = (hasReduce,options = {}) => {
    let reduce = hasReduce ? options.reduce === undefined ? true : options.reduce : options.reduce !== undefined ? options.reduce ? 'invalid' : false : false;
    if(reduce === 'invalid') {
        throw('Missing reduce function!');
    }
    let group_level = options.group_level === undefined ? 0 : options.group_level;
    let group = options.group === undefined ? false || group_level > 0 : options.group;
    if(!reduce && group) {
        throw('Invalid use of grouping on a map view.');
    }
    if(!group && group_level > 0){
        throw("Can't specify group=false and group_level>0 at the same time");
    }
    if(group && group_level === 0){
        group_level = 'max';
    }
    return {reduce, group, group_level}
}

module.exports = { validateViewOptions,jokerEquals }