[ES-1424] added null check

Signed-off-by: Venkata Saidurga Polamraju <saidurgacsea@gmail.com>

esignet-core/src/main/java/io/mosip/esignet/core/dto/OAuthDetailRequest.java

@@ -14,6 +14,8 @@
 import lombok.Data;
 
 import io.mosip.esignet.core.validator.RedirectURL;
+
+import javax.validation.Valid;
 import javax.validation.constraints.NotBlank;
 
 import static io.mosip.esignet.core.constants.ErrorConstants.INVALID_CLIENT_ID;
@@ -73,6 +75,7 @@ public class OAuthDetailRequest {
      * The userinfo and id_token members of the claims request both are JSON objects with the
      * names of the individual Claims being requested as the member names.
      */
+    @Valid
     private ClaimsV2 claims;
 
     /**

esignet-integration-api/src/main/java/io/mosip/esignet/api/dto/claim/VerifiedClaimDetail.java

@@ -10,6 +10,7 @@
 import lombok.Data;
 import lombok.NoArgsConstructor;
 
+import javax.validation.Valid;
 import java.io.Serializable;
 import java.util.Map;
 
@@ -21,5 +22,5 @@ public class VerifiedClaimDetail implements Serializable {
 
     private static final long serialVersionUID = 1L;
     private VerificationFilter verification;
-    private Map<String, ClaimDetail> claims;
+    private Map<String,@Valid ClaimDetail> claims;
 }

esignet-integration-api/src/main/java/io/mosip/esignet/api/validator/PurposeValidator.java

@@ -16,6 +16,7 @@ public class PurposeValidator implements ConstraintValidator<Purpose, String> {
 
     @Override
     public boolean isValid(String purpose, ConstraintValidatorContext constraintValidatorContext) {
+        if(purpose==null) return true;
         int length = StringUtils.hasText(purpose) ? purpose.length() : 0;
         return length >= minLength && length <= maxLength;
     }

esignet-integration-api/src/test/java/io/mosip/esignet/api/validator/ValidatorTest.java

@@ -47,7 +47,7 @@ public void testIsValid_WithPurposeWithInvalidLength_thenFail() {
     public void testIsValid_WithNullPurpose_theFail() {
         String purpose = null;
         boolean isValid = purposeValidator.isValid(purpose, constraintValidatorContext);
-        assertFalse(isValid);
+        assertTrue(isValid);
     }
 
     @Test