KB-5745 | If user submits the test without selecting any answer optio…

…ns, then the system is considering the assessment as unattempted (#640) (#643)

* KB-5745 | If user submits the test without selecting any answer options, then the system is considering the assessment as unattempted

1. If NaN value is there for double while convert the object to Json using mapper class its throwing error. Fixed by checking the value is greater than 0

* KB-5883 | The popup should be shown when user clicks on Retake button immediately after maximum attempt attended

1. If the retakeAttemptconsumed if less than 0  then consider it to be 0

Co-authored-by: tarentomaheshvakkund <139739142+tarentomaheshvakkund@users.noreply.github.com>

src/main/java/org/sunbird/assessment/service/AssessmentServiceV5Impl.java

@@ -83,7 +83,9 @@ public SBApiResponse retakeAssessment(String assessmentIdentifier, String token,
 
            // if (serverProperties.isAssessmentRetakeCountVerificationEnabled()) {
                 retakeAttemptsConsumed = calculateAssessmentRetakeCount(userId, assessmentIdentifier);
-                retakeAttemptsConsumed=retakeAttemptsConsumed-1;
+                if(retakeAttemptsConsumed>0){
+                    retakeAttemptsConsumed=retakeAttemptsConsumed-1;
+                }
             //}
         } catch (Exception e) {
             errMsg = String.format("Error while calculating retake assessment. Exception: %s", e.getMessage());
@@ -820,16 +822,24 @@ private Map<String, Object> calculateSectionFinalResults(List<Map<String, Object
                     totalMarks += (Integer) sectionChildren.get(Constants.TOTAL_MARKS);
                 }
             }
-            res.put(Constants.OVERALL_RESULT, ((double)correct / (double)(correct+inCorrect)) * 100);
+            if(correct > 0 && inCorrect>0) {
+                res.put(Constants.OVERALL_RESULT, ((double) correct / (double) (correct + inCorrect)) * 100);
+            }else{
+                res.put(Constants.OVERALL_RESULT,0.0);
+            }
             res.put(Constants.BLANK, blank);
             res.put(Constants.CORRECT, correct);
             res.put(Constants.INCORRECT, inCorrect);
             res.put(Constants.PASS, (pass == sectionLevelResults.size()));
             res.put(Constants.TIME_TAKEN_FOR_ASSESSMENT,assessmentCompletionTime-assessmentStartTime);
             res.put(Constants.MAX_ASSESSMENT_RETAKE_ATTEMPTS,maxAssessmentRetakeAttempts);
             res.put(Constants.RETAKE_ATTEMPT_CONSUMED,retakeAttemptsConsumed);
-            double totalPercentage = (totalSectionMarks / (double)totalMarks) * 100;
-            res.put(Constants.TOTAL_PERCENTAGE, totalPercentage);
+            if(totalSectionMarks>0.0 && totalMarks>0) {
+                double totalPercentage = (totalSectionMarks / (double) totalMarks) * 100;
+                res.put(Constants.TOTAL_PERCENTAGE, totalPercentage);
+            }else{
+                res.put(Constants.TOTAL_PERCENTAGE,0.0);
+            }
             res.put(Constants.TOTAL_SECTION_MARKS, totalSectionMarks);
             res.put(Constants.TOTAL_MARKS, totalMarks);
         } catch (Exception e) {