[ES-1424]

esignet-core/src/main/java/io/mosip/esignet/core/constants/ErrorConstants.java

@@ -91,4 +91,5 @@ public class ErrorConstants {
     public static final String INVALID_PATH_FRAGMENT = "invalid_path_fragment";
     public static final String INVALID_VERIFICATION = "invalid_verification";
     public static final String INVALID_VERIFIED_CLAIMS = "invalid_verified_claims";
+    public static final String INVALID_PURPOSE="invalid_purpose";
 }

esignet-integration-api/pom.xml

@@ -18,6 +18,8 @@
 
     <properties>
         <java.version>11</java.version>
+        <junit.version>4.13.2</junit.version>
+        <mockito.version>2.22.0</mockito.version>
     </properties>
 
     <dependencies>
@@ -40,6 +42,23 @@
             <artifactId>jsonld-common-java</artifactId>
             <version>0.5.0</version>
         </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>${junit.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.mockito</groupId>
+            <artifactId>mockito-core</artifactId>
+            <version>${mockito.version}</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-test</artifactId>
+            <scope>test</scope>
+        </dependency>
     </dependencies>
 
 </project>

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

@@ -6,6 +6,7 @@
 package io.mosip.esignet.api.dto.claim;
 
 import com.fasterxml.jackson.annotation.JsonIgnoreProperties;
+import io.mosip.esignet.api.validator.Purpose;
 import lombok.AllArgsConstructor;
 import lombok.Data;
 import lombok.NoArgsConstructor;
@@ -22,6 +23,7 @@ public class ClaimDetail extends VerifiedClaimDetail implements Serializable {
     private String[] values;
     private boolean essential;
 
+    @Purpose
     private String purpose;
 
     public ClaimDetail(String value, String[] values, boolean essential) {

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

@@ -0,0 +1,25 @@
+package io.mosip.esignet.api.validator;
+
+import io.mosip.esignet.api.util.ErrorConstants;
+
+import javax.validation.Constraint;
+import javax.validation.Payload;
+import java.lang.annotation.Documented;
+import java.lang.annotation.Retention;
+import java.lang.annotation.Target;
+
+import static java.lang.annotation.ElementType.FIELD;
+import static java.lang.annotation.ElementType.TYPE_USE;
+import static java.lang.annotation.RetentionPolicy.RUNTIME;
+
+@Target({FIELD, TYPE_USE})
+@Retention(RUNTIME)
+@Constraint(validatedBy = PurposeValidator.class)
+@Documented
+public @interface Purpose {
+    String message() default ErrorConstants.INVALID_PURPOSE;
+
+    Class<?>[] groups() default {};
+
+    Class<? extends Payload>[] payload() default {};
+}

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

@@ -0,0 +1,22 @@
+package io.mosip.esignet.api.validator;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.util.StringUtils;
+
+import javax.validation.ConstraintValidator;
+import javax.validation.ConstraintValidatorContext;
+
+public class PurposeValidator implements ConstraintValidator<Purpose, String> {
+
+    @Value("${mosip.esignet.claim-detail.purpose.min-length}")
+    private int minLength;
+
+    @Value("${mosip.esignet.claim-detail.purpose.max-length}")
+    private int maxLength;
+
+    @Override
+    public boolean isValid(String purpose, ConstraintValidatorContext constraintValidatorContext) {
+        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

@@ -0,0 +1,59 @@
+package io.mosip.esignet.api.validator;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.InjectMocks;
+import org.mockito.junit.MockitoJUnitRunner;
+import org.mockito.Mock;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.test.util.ReflectionTestUtils;
+
+import javax.validation.ConstraintValidatorContext;
+
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertTrue;
+
+@RunWith(MockitoJUnitRunner.class)
+public class ValidatorTest {
+
+    @InjectMocks
+    private PurposeValidator purposeValidator;
+
+    @Mock
+    private ConstraintValidatorContext constraintValidatorContext;
+
+    @Before
+    public void setUp() {
+        ReflectionTestUtils.setField(purposeValidator, "minLength", 3);
+        ReflectionTestUtils.setField(purposeValidator, "maxLength", 300);
+    }
+
+    @Test
+    public void testIsValid_WithValidPurpose_thenPass() {
+        String purpose = "Purpose";
+        boolean isValid = purposeValidator.isValid(purpose, constraintValidatorContext);
+        assertTrue(isValid);
+    }
+
+    @Test
+    public void testIsValid_WithPurposeWithInvalidLength_thenFail() {
+        String purpose = "In";
+        boolean isValid = purposeValidator.isValid(purpose, constraintValidatorContext);
+        assertFalse(isValid);
+    }
+
+    @Test
+    public void testIsValid_WithNullPurpose_theFail() {
+        String purpose = null;
+        boolean isValid = purposeValidator.isValid(purpose, constraintValidatorContext);
+        assertFalse(isValid);
+    }
+
+    @Test
+    public void testIsValid_WithEmptyPurpose_thenFail() {
+        String purpose = "";
+        boolean isValid = purposeValidator.isValid(purpose, constraintValidatorContext);
+        assertFalse(isValid);
+    }
+}

esignet-service/src/main/resources/application-local.properties

@@ -42,6 +42,10 @@ mosip.esignet.auth-challenge.IDT.format=base64url-encoded-json
 mosip.esignet.auth-challenge.IDT.min-length=20
 mosip.esignet.auth-challenge.IDT.max-length=2000
 
+mosip.esignet.claim-detail.purpose.min-length=3
+mosip.esignet.claim-detail.purpose.max-length=300
+
+
 ## Endpoints required to have oauth-details-hash and oauth-details-key HTTP header
 mosip.esignet.header-filter.paths-to-validate={'${server.servlet.path}/authorization/send-otp', \
   '${server.servlet.path}/authorization/authenticate', \

esignet-service/src/test/resources/application-test.properties

@@ -36,6 +36,9 @@ mosip.esignet.auth-challenge.PIN.format=number
 mosip.esignet.auth-challenge.PIN.min-length=4
 mosip.esignet.auth-challenge.PIN.max-length=5
 
+mosip.esignet.claim-detail.purpose.min-length=3
+mosip.esignet.claim-detail.purpose.max-length=300
+
 mosip.esignet.header-filter.paths-to-validate={'${server.servlet.path}/authorization/send-otp', \
   '${server.servlet.path}/authorization/authenticate', \
   '${server.servlet.path}/authorization/auth-code'}