Add source code for article BAEL-3379

javaxval/src/main/java/org/baeldung/javaxval/messageinterpolator/Person.java

@@ -0,0 +1,30 @@
+package org.baeldung.javaxval.messageinterpolator;
+
+import javax.validation.constraints.Min;
+import javax.validation.constraints.Size;
+
+public class Person {
+
+	@Size(min = 10, max = 200, message = "Name should be in-between {min} and {max} characters")
+	private String name;
+
+	@Min(value = 18, message = "Age should not be less than {value} but it is ${validatedValue}")
+	private int age;
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(String name) {
+		this.name = name;
+	}
+
+	public int getAge() {
+		return age;
+	}
+
+	public void setAge(int age) {
+		this.age = age;
+	}
+
+}

javaxval/src/test/java/org/baeldung/javaxval/messageinterpolator/ParameterMessageInterpolaterIntegrationTest.java

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+package org.baeldung.javaxval.messageinterpolator;
+
+import static org.junit.jupiter.api.Assertions.assertEquals;
+
+import java.util.Set;
+
+import javax.validation.ConstraintViolation;
+import javax.validation.Validation;
+import javax.validation.Validator;
+import javax.validation.ValidatorFactory;
+
+import org.hibernate.validator.messageinterpolation.ParameterMessageInterpolator;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+public class ParameterMessageInterpolaterIntegrationTest {
+
+	private static Validator validator;
+
+	@BeforeClass
+	public static void beforeClass() {
+		ValidatorFactory validatorFactory = Validation.byDefaultProvider()
+			.configure()
+			.messageInterpolator(new ParameterMessageInterpolator())
+			.buildValidatorFactory();
+		
+		validator = validatorFactory.getValidator();
+	}
+
+	@Test
+	public void ifNameLengthIsLess_nameValidationFails() {
+		Person person = new Person();
+		person.setName("John Doe");
+		person.setAge(18);
+
+		Set<ConstraintViolation<Person>> violations = validator.validate(person);
+		assertEquals(1, violations.size());
+
+		ConstraintViolation<Person> violation = violations.iterator().next();
+		assertEquals("Name should be in-between 10 and 200 characters", violation.getMessage());
+	}
+	
+	@Test
+	public void ifAgeIsLess_ageMinValidationFails() {
+		Person person = new Person();
+		person.setName("John Stephaner Doe");
+		person.setAge(16);
+
+		Set<ConstraintViolation<Person>> violations = validator.validate(person);
+		assertEquals(1, violations.size());
+
+		ConstraintViolation<Person> violation = violations.iterator().next();
+		assertEquals("Age should not be less than 18 but it is ${validatedValue}", violation.getMessage());
+	}
+
+}
+
+