import lombok.Data;
import org.junit.Test;

import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
import javax.validation.constraints.Max;
import java.math.BigDecimal;
import java.util.Set;

import static org.assertj.core.api.Assertions.assertThat;

public class ValidTest {

	@Data
	static class ClassToValidate{

		public ClassToValidate() {
			failingNumber = new BigDecimal("1.001");
			failingBigDecimal = new BigDecimal("1.001");

			passingNumber = new BigDecimal("0.001");
			passingBigDecimal = new BigDecimal("0.001");
		}

		@Max(1)
		private Number failingNumber;

		@Max(1)
		private BigDecimal failingBigDecimal;

		@Max(1)
		private Number passingNumber;

		@Max(1)
		private BigDecimal passingBigDecimal;
	}

	@Test
	public void test(){
		ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
		Validator validator = factory.getValidator();

		Set<ConstraintViolation<ClassToValidate>> violations = validator
				.validate(new ClassToValidate());

        for (ConstraintViolation<ClassToValidate> violation : violations) {
            System.out.println(violation);
        }
        assertThat(violations).hasSize(2);
	}

}