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/*
* lemonad - Some functional sweetness for Java
* Copyright (C) 2019 Pacien TRAN-GIRARD
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
package org.pacien.lemonad.validation;
import org.junit.jupiter.api.Assertions;
import org.junit.jupiter.api.Test;
import org.pacien.lemonad.attempt.Attempt;
import java.util.List;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertFalse;
import static org.junit.jupiter.api.Assertions.assertTrue;
import static org.junit.jupiter.api.Assertions.fail;
/**
* @author pacien
*/
class ValidationTest {
@Test void testValidResult() {
var subject = "subject";
var validation = Validation.of(subject);
assertTrue(validation.getErrors().isEmpty());
assertTrue(validation.isValid());
assertFalse(validation.isInvalid());
validation.ifValid(innerSubject -> assertEquals(subject, innerSubject));
validation.ifInvalid((__, ___) -> fail());
assertEquals(Attempt.success(subject), validation.toAttempt());
}
@Test void testInvalidResult() {
var subject = "subject";
var errors = List.of(0, 1);
var validation = Validation.of(subject, 0, 1);
assertEquals(errors, validation.getErrors());
assertFalse(validation.isValid());
assertTrue(validation.isInvalid());
validation.ifValid(Assertions::fail);
validation.ifInvalid((innerSubject, innerErrors) -> {
assertEquals(subject, innerSubject);
assertEquals(errors, innerErrors);
});
assertEquals(Attempt.failure(errors), validation.toAttempt());
}
@Test void testFlatMap() {
Validation
.of("subject")
.ifInvalid((__, ___) -> fail())
.flatMap(res -> Validation.of(res.getSubject(), 0))
.ifValid(innerSubject -> fail());
}
@Test void testMerge() {
var validation = Validation
.of(12345, 0)
.merge(s -> Validation.of(s, 1))
.merge((Integer s) -> Integer.toString(s), (String s) -> Validation.of(s, 2))
.merge(Validation.of(0L, List.of(3)))
.merge(List.of(4));
assertEquals(Validation.of(12345, 0, 1, 2, 3, 4), validation);
}
@Test void testValidate() {
var validation = Validation
.of("subject")
.validate(String::isEmpty, 0)
.validate(String::length, len -> len > 0, 1)
.validate(subject -> List.of(2, 3))
.validate(subject -> subject.charAt(0), firstChar -> firstChar == 's' ? List.of() : List.of(4));
assertEquals(Validation.of("subject", 0, 2, 3), validation);
}
}
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