added default value if trialResearchSystem is not provided

Author: dmendelowitz

src/extractors/CSVClinicalTrialInformationExtractor.js

@@ -26,15 +26,18 @@ class CSVClinicalTrialInformationExtractor extends Extractor {
 
   joinClinicalTrialData(patientId, clinicalTrialData) {
     logger.debug('Reformatting clinical trial data from CSV into template format');
-    const {
-      trialSubjectID, enrollmentStatus, trialResearchID, trialStatus, trialResearchSystem = '',
+    let {
+      trialSubjectID, enrollmentStatus, trialResearchID, trialStatus, trialResearchSystem,
     } = clinicalTrialData;
     const { clinicalSiteID } = this;
 
     if (!(patientId && clinicalSiteID && trialSubjectID && enrollmentStatus && trialResearchID && trialStatus)) {
       throw new Error('Clinical trial missing an expected property: patientId, clinicalSiteID, trialSubjectID, enrollmentStatus, trialResearchID, and trialStatus are required.');
     }
 
+    //since trialResearchSystem is optional, check for blank value and replace with default value
+    trialResearchSystem = (trialResearchSystem === '') ? 'http://example.com/clinicaltrialids' : trialResearchSystem;
+
     // Need separate data objects for ResearchSubject and ResearchStudy so that they get different resource ids
     return {
       formattedDataSubject: {

test/sample-client-data/clinical-trial-information.csv

@@ -1,4 +1,4 @@
 mrn,trialSubjectID,enrollmentStatus,trialResearchID,trialStatus,trialResearchSystem
 123,subjectId-1,potential-candidate,researchId-1,approved,system-1
 456,subjectId-2,on-study-intervention,researchId-1,completed,system-2
-789,subjectId-3,on-study-observation,researchId-2,active,system-3
+789,subjectId-3,on-study-observation,researchId-2,active,