// getValue(getContextData('2', 'cds.NULL_DATA', ''));

function getValue(json) {
    let result;
    if (json == undefined || json.length === 0)
        result = 'A) Invalid input!';
    else {
        let parsed;
        try {
            parsed = JSON.parse(json);
        } catch (error) {
            parsed = null;
        }
        if (parsed == null)
            result = 'B) Invalid input!';
        else {
            let reactorType = parsed.rds == undefined ? '' : parsed.rds.reactorType == undefined ? '' : parsed.rds.reactorType;
            if (parsed.rds == undefined)
                result = '-';
            else if (parsed.rds.loadLockSide == undefined)
                result = '_ - ' + reactorType;
            else if (parsed.rds.loadLockSide === 'L')
                result = 'Left - ' + reactorType;
            else if (parsed.rds.loadLockSide === 'R')
                result = 'Right - ' + reactorType;
            else
                result = parsed.rds.loadLockSide + ' - ' + reactorType;
        }
    }
    return result;
}

const json = '{"rds":{"prodSpec":{"recipesAndPatterns":[{"recipe":"6IN25_ROTR","pattern":"","patternSize":0,"tool":"TENCOR"}]}}}';
const testA = getValue(json);
if (testA !== '1')
    throw 'Test A failed: ' + testA;