net.dontdrinkandroot.persistence.dao.NumericEntityDaoTest.java Source code

Introduction

Here is the source code for net.dontdrinkandroot.persistence.dao.NumericEntityDaoTest.java

Source

/**
 * Copyright (C) 2012-2014 Philip W. Sorst <philip@sorst.net>
 * and individual contributors as indicated
 * by the @authors tag.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package net.dontdrinkandroot.persistence.dao;

import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Expression;
import javax.persistence.criteria.Root;

import net.dontdrinkandroot.persistence.entity.NumericEntity;
import net.dontdrinkandroot.persistence.entity.NumericEntity_;

import org.junit.Assert;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.test.context.transaction.TransactionConfiguration;
import org.springframework.transaction.annotation.Transactional;

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = { "classpath:database.xml" })
@TransactionConfiguration(transactionManager = "transactionManager", defaultRollback = true)
public class NumericEntityDaoTest extends TypedJpaDao<NumericEntity, Long> {

    public NumericEntityDaoTest() {
        super(NumericEntity.class);
    }

    @Test
    @Transactional
    public void someBla() {
        NumericEntity entity = new NumericEntity();
        entity = this.save(entity);

        Assert.assertEquals(entity, this.find(entity.getId()));
    }

    @Test
    @Transactional
    public void testQuot() {
        NumericEntity entity2 = new NumericEntity();
        entity2.setLongField(2L);
        entity2.setIntField(3);
        entity2 = this.save(entity2);

        final CriteriaBuilder builder = this.getCriteriaBuilder();
        final CriteriaQuery<Number> criteriaQuery = builder.createQuery(Number.class);
        final Root<NumericEntity> root = criteriaQuery.from(NumericEntity.class);
        final Expression<Number> quot = builder.quot(
                builder.prod(builder.literal(1f), root.get(NumericEntity_.intField)),
                root.get(NumericEntity_.longField));
        criteriaQuery.select(quot);

        final Number result = this.findSingle(criteriaQuery);
        Assert.assertEquals(Float.class, result.getClass());
        Assert.assertEquals(3 / 2f, result);
    }
}