BAEL-4605: code and tests for composing constraints (#12180)
* BAEL-4605: code and tests for composing constraints * BAEL-4605: small fix and formatted the code * BAEL-4605: code review
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etrandafir93
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package com.baeldung.javaxval.constraint.composition;
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public class Account {
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@ValidAlphanumeric
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private String username;
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@ValidAlphanumericWithSingleViolation
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private String password;
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@ValidLengthOrNumericCharacter
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private String nickname;
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public String getUsername() {
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return username;
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}
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public void setUsername(String username) {
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this.username = username;
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}
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public String getPassword() {
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return password;
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}
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public void setPassword(String password) {
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this.password = password;
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}
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public String getNickname() {
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return nickname;
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}
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public void setNickname(String nickname) {
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this.nickname = nickname;
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}
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}
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package com.baeldung.javaxval.constraint.composition;
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import org.springframework.stereotype.Component;
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import org.springframework.validation.annotation.Validated;
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@Component
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@Validated
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public class AccountService {
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@AlphanumericReturnValue
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public String getAnInvalidAlphanumericValue() {
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return "john";
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}
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@AlphanumericReturnValue
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public String getValidAlphanumericValue() {
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return "johnDoe1234";
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}
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}
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package com.baeldung.javaxval.constraint.composition;
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import org.hibernate.validator.constraints.Length;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import javax.validation.constraints.NotNull;
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import javax.validation.constraints.Pattern;
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import javax.validation.constraintvalidation.SupportedValidationTarget;
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import javax.validation.constraintvalidation.ValidationTarget;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import static java.lang.annotation.ElementType.*;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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@NotNull
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@Pattern(regexp = ".*\\d.*", message = "must contain at least one numeric character")
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@Length(min = 6, max = 32, message = "must have between 6 and 32 characters")
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@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
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@Retention(RUNTIME)
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@Documented
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@Constraint(validatedBy = {})
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@SupportedValidationTarget(ValidationTarget.ANNOTATED_ELEMENT)
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public @interface AlphanumericReturnValue {
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String message() default "method return value should have a valid length and contain numeric character(s).";
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Class<?>[] groups() default {};
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Class<? extends Payload>[] payload() default {};
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}
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package com.baeldung.javaxval.constraint.composition;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.validation.beanvalidation.MethodValidationPostProcessor;
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@Configuration
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@ComponentScan({ "com.baeldung.javaxval.constraint.composition" })
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public class ConstraintCompositionConfig {
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@Bean
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public MethodValidationPostProcessor methodValidationPostProcessor() {
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return new MethodValidationPostProcessor();
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}
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@Bean
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public AccountService accountService() {
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return new AccountService();
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}
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}
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package com.baeldung.javaxval.constraint.composition;
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import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
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import static java.lang.annotation.ElementType.CONSTRUCTOR;
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.PARAMETER;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import javax.validation.constraints.NotNull;
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import javax.validation.constraints.Pattern;
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import org.hibernate.validator.constraints.Length;
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@NotNull
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@Pattern(regexp = ".*\\d.*", message = "must contain at least one numeric character")
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@Length(min = 6, max = 32, message = "must have between 6 and 32 characters")
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@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
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@Retention(RUNTIME)
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@Documented
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@Constraint(validatedBy = {})
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public @interface ValidAlphanumeric {
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String message() default "field should have a valid length and contain numeric character(s).";
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Class<?>[] groups() default {};
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Class<? extends Payload>[] payload() default {};
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}
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package com.baeldung.javaxval.constraint.composition;
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import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
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import static java.lang.annotation.ElementType.CONSTRUCTOR;
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import static java.lang.annotation.ElementType.FIELD;
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import static java.lang.annotation.ElementType.METHOD;
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import static java.lang.annotation.ElementType.PARAMETER;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import javax.validation.ReportAsSingleViolation;
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import javax.validation.constraints.NotNull;
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import javax.validation.constraints.Pattern;
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import org.hibernate.validator.constraints.Length;
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@NotNull
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@Pattern(regexp = ".*\\d.*", message = "must contain at least one numeric character")
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@Length(min = 6, max = 32, message = "must have between 6 and 32 characters")
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@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
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@Retention(RUNTIME)
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@Documented
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@Constraint(validatedBy = {})
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@ReportAsSingleViolation
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public @interface ValidAlphanumericWithSingleViolation {
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String message() default "field should have a valid length and contain numeric character(s).";
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Class<?>[] groups() default {};
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Class<? extends Payload>[] payload() default {};
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}
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package com.baeldung.javaxval.constraint.composition;
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import org.hibernate.validator.constraints.CompositionType;
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import org.hibernate.validator.constraints.ConstraintComposition;
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import org.hibernate.validator.constraints.Length;
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import javax.validation.Constraint;
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import javax.validation.Payload;
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import javax.validation.constraints.Pattern;
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import java.lang.annotation.Documented;
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import java.lang.annotation.Retention;
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import java.lang.annotation.Target;
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import static java.lang.annotation.ElementType.*;
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import static java.lang.annotation.RetentionPolicy.RUNTIME;
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@Pattern(regexp = ".*\\d.*", message = "must contain at least one numeric character")
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@Length(min = 6, max = 32, message = "must have between 6 and 32 characters")
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@Target({ METHOD, FIELD, ANNOTATION_TYPE, CONSTRUCTOR, PARAMETER })
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@Retention(RUNTIME)
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@Documented
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@Constraint(validatedBy = {})
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@ConstraintComposition(CompositionType.OR)
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public @interface ValidLengthOrNumericCharacter {
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String message() default "field should have a valid length or contain numeric character(s).";
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Class<?>[] groups() default {};
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Class<? extends Payload>[] payload() default {};
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}
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package com.baeldung.javaxval.constraint.composition;
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import static org.assertj.core.api.Assertions.assertThat;
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import static org.assertj.core.api.Assertions.assertThatThrownBy;
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import java.util.Set;
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import javax.validation.ConstraintViolation;
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import javax.validation.ConstraintViolationException;
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import javax.validation.Validation;
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import javax.validation.Validator;
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import javax.validation.ValidatorFactory;
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import org.junit.Before;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.test.context.ContextConfiguration;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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import org.springframework.test.context.support.AnnotationConfigContextLoader;
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@RunWith(SpringJUnit4ClassRunner.class)
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@ContextConfiguration(classes = { ConstraintCompositionConfig.class }, loader = AnnotationConfigContextLoader.class)
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public class ConstraintCompositionUnitTest {
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@Autowired
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private AccountService accountService;
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private Validator validator;
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@Before
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public void setup() {
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ValidatorFactory factory = Validation.buildDefaultValidatorFactory();
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validator = factory.getValidator();
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}
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@Test
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public void whenUsernameIsInvalid_validationShouldReturnTwoViolations() {
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Account account = new Account();
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account.setNickname("valid_nickname123");
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account.setPassword("valid_password123");
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account.setUsername("john");
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Set<ConstraintViolation<Account>> violations = validator.validate(account);
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assertThat(violations).hasSize(2);
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}
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@Test
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public void whenPasswordIsInvalid_validationShouldReturnSingleViolation() {
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Account account = new Account();
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account.setUsername("valid_username123");
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account.setNickname("valid_nickname123");
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account.setPassword("john");
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Set<ConstraintViolation<Account>> violations = validator.validate(account);
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assertThat(violations).hasSize(1);
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}
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@Test
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public void whenNicknameIsTooShortButContainsNumericCharacter_validationShouldPass() {
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Account account = new Account();
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account.setUsername("valid_username123");
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account.setPassword("valid_password123");
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account.setNickname("doe1");
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Set<ConstraintViolation<Account>> violations = validator.validate(account);
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assertThat(violations).isEmpty();
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}
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@Test
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public void whenMethodReturnValuesIsInvalid_validationShouldFail() {
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assertThatThrownBy(() -> accountService.getAnInvalidAlphanumericValue()).isInstanceOf(ConstraintViolationException.class)
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.hasMessageContaining("must contain at least one numeric character")
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.hasMessageContaining("must have between 6 and 32 characters");
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}
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}
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