demo.ProductRepositoryIntegrationTest.java Source code

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Here is the source code for demo.ProductRepositoryIntegrationTest.java

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/*
 * Copyright 2012-2015 the original author or authors.
 *
 * 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 demo;

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

import java.math.BigDecimal;
import java.util.List;
import java.util.Optional;

import javax.persistence.EntityManager;

import org.assertj.core.data.Percentage;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;

/**
 * Integration tests for {@link ProductRepository}.
 * 
 * @author Oliver Gierke
 * @author Thomas Darimont
 * @since Step 6
 */
@RunWith(SpringJUnit4ClassRunner.class)
@Transactional
@SpringApplicationConfiguration(classes = App.class)
public class ProductRepositoryIntegrationTest {

    @Autowired
    ProductRepository repository;
    @Autowired
    EntityManager em;

    /**
     * @since Step 6.1
     */
    @Test
    public void findsAllProducts() {

        List<Product> products = repository.findAll();

        assertThat(products).asList().hasSize(3);
    }

    /**
     * @since Step 6.2
     */
    @Test
    public void findsAllAppleProductPaged() {

        Page<Product> products = repository.findByDescriptionContaining("Apple", new PageRequest(0, 1));

        assertThat(products.isFirst()).isTrue();
        assertThat(products.hasNext()).isTrue();

        assertThat(products).filteredOn("name", "iPad").isNotEmpty();
        assertThat(products).filteredOn("name", "Dock").isEmpty();
    }

    /**
     * @since Step 6.3
     */
    @Test
    public void returnsOptionalEmptyForNonExistingProduct() {

        Optional<Product> result = repository.findOne(4711L);

        assertThat(result).isEmpty();
    }

    /**
     * @since Step 7.1
     */
    @Test
    public void executesManuallyDeclaredQuery() {

        List<Product> products = repository.findByAttributeAndValue("connector", "plug");

        assertThat(products).filteredOn("name", "Dock").isNotEmpty();
    }

    /**
     * @since Step 9
     */
    @Test
    public void executesCustomlyImplementedMethod() {

        Product macbook = repository.findOne(2L).get();

        em.detach(macbook); // remove item from JPA cache

        repository.raisePricesForWinterSaleBy(1.2);

        Product result = repository.findOne(2L).get();

        assertThat(result.getPrice()).isCloseTo(macbook.getPrice().multiply(new BigDecimal("1.2")),
                Percentage.withPercentage(1));
    }
}