/*
* Copyright 2014 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 org.springframework.data.repository.util;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
import org.junit.Assume;
import org.junit.Before;
import org.junit.Test;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.util.ClassUtils;
import com.google.common.base.Optional;
/**
* Unit tests for {@link QueryExecutionConverters}.
*
* @author Oliver Gierke
*/
public class QueryExecutionConvertersUnitTests {
DefaultConversionService conversionService;
@Before
public void setUp() {
this.conversionService = new DefaultConversionService();
QueryExecutionConverters.registerConvertersIn(conversionService);
}
/**
* @see DATACMNS-483
*/
@Test
@SuppressWarnings("unchecked")
public void turnsNullIntoGuavaOptional() {
Optional<Object> optional = conversionService.convert(new NullableWrapper(null), Optional.class);
assertThat(optional, is(Optional.<Object> absent()));
}
/**
* @see DATACMNS-483
*/
@Test
@SuppressWarnings("unchecked")
public void turnsNullIntoJdk8Optional() {
Assume.assumeThat(ClassUtils.isPresent("java.util.Optional", getClass().getClassLoader()), is(true));
java.util.Optional<Object> optional = conversionService.convert(new NullableWrapper(null), java.util.Optional.class);
assertThat(optional, is(java.util.Optional.<Object> empty()));
}
}