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DomainClassConverterUnitTests.java
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DomainClassConverterUnitTests.java
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/*
* Copyright 2008-2020 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
*
* https://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.support;
import static org.assertj.core.api.Assertions.*;
import static org.mockito.ArgumentMatchers.*;
import static org.mockito.Mockito.*;
import java.lang.reflect.Method;
import java.util.Optional;
import org.junit.jupiter.api.BeforeEach;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.api.extension.ExtendWith;
import org.mockito.Mock;
import org.mockito.junit.jupiter.MockitoExtension;
import org.mockito.junit.jupiter.MockitoSettings;
import org.mockito.quality.Strictness;
import org.springframework.aop.framework.Advised;
import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.support.DefaultListableBeanFactory;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.GenericApplicationContext;
import org.springframework.core.MethodParameter;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.data.repository.CrudRepository;
import org.springframework.data.repository.core.support.DummyRepositoryFactoryBean;
import org.springframework.data.repository.support.DomainClassConverter.ToIdConverter;
import org.springframework.test.util.ReflectionTestUtils;
import org.springframework.web.bind.annotation.ModelAttribute;
/**
* Unit test for {@link DomainClassConverter}.
*
* @author Oliver Gierke
* @author Thomas Darimont
*/
@ExtendWith(MockitoExtension.class)
@MockitoSettings(strictness = Strictness.LENIENT)
class DomainClassConverterUnitTests {
static final User USER = new User();
static final TypeDescriptor STRING_TYPE = TypeDescriptor.valueOf(String.class);
static final TypeDescriptor USER_TYPE = TypeDescriptor.valueOf(User.class);
static final TypeDescriptor SUB_USER_TYPE = TypeDescriptor.valueOf(SubUser.class);
static final TypeDescriptor LONG_TYPE = TypeDescriptor.valueOf(Long.class);
@SuppressWarnings("rawtypes") DomainClassConverter converter;
@Mock DefaultConversionService service;
@BeforeEach
@SuppressWarnings({ "unchecked", "rawtypes" })
void setUp() {
converter = new DomainClassConverter(service);
}
@Test
void matchFailsIfNoDaoAvailable() {
GenericApplicationContext ctx = new GenericApplicationContext();
ctx.refresh();
converter.setApplicationContext(ctx);
assertMatches(false);
}
@Test
void matchesIfConversionInBetweenIsPossible() {
converter.setApplicationContext(initContextWithRepo());
when(service.canConvert(String.class, Long.class)).thenReturn(true);
assertMatches(true);
}
@Test
void matchFailsIfNoIntermediateConversionIsPossible() {
converter.setApplicationContext(initContextWithRepo());
when(service.canConvert(String.class, Long.class)).thenReturn(false);
assertMatches(false);
}
// DATACMNS-233
void returnsNullForNullSource() {
assertThat(converter.convert(null, STRING_TYPE, USER_TYPE)).isNull();
}
// DATACMNS-233
void returnsNullForEmptyStringSource() {
assertThat(converter.convert("", STRING_TYPE, USER_TYPE)).isNull();
}
private void assertMatches(boolean matchExpected) {
assertThat(converter.matches(STRING_TYPE, USER_TYPE)).isEqualTo(matchExpected);
}
@Test
void convertsStringToUserCorrectly() throws Exception {
ApplicationContext context = initContextWithRepo();
converter.setApplicationContext(context);
doReturn(1L).when(service).convert(any(), eq(Long.class));
converter.convert("1", STRING_TYPE, USER_TYPE);
UserRepository bean = context.getBean(UserRepository.class);
UserRepository repo = (UserRepository) ((Advised) bean).getTargetSource().getTarget();
verify(repo, times(1)).findById(1L);
}
@Test // DATACMNS-133
void discoversFactoryAndRepoFromParentApplicationContext() {
ApplicationContext parent = initContextWithRepo();
GenericApplicationContext context = new GenericApplicationContext(parent);
context.refresh();
when(service.canConvert(String.class, Long.class)).thenReturn(true);
converter.setApplicationContext(context);
assertThat(converter.matches(STRING_TYPE, USER_TYPE)).isTrue();
}
@Test // DATACMNS-583
void converterDoesntMatchIfTargetTypeIsAssignableFromSource() {
converter.setApplicationContext(initContextWithRepo());
assertThat(converter.matches(SUB_USER_TYPE, USER_TYPE)).isFalse();
assertThat((User) converter.convert(USER, USER_TYPE, USER_TYPE)).isEqualTo(USER);
}
@Test // DATACMNS-627
void supportsConversionFromIdType() {
converter.setApplicationContext(initContextWithRepo());
assertThat(converter.matches(LONG_TYPE, USER_TYPE)).isTrue();
}
@Test // DATACMNS-627
void supportsConversionFromEntityToIdType() {
converter.setApplicationContext(initContextWithRepo());
assertThat(converter.matches(USER_TYPE, LONG_TYPE)).isTrue();
}
@Test // DATACMNS-627
void supportsConversionFromEntityToString() {
converter.setApplicationContext(initContextWithRepo());
when(service.canConvert(Long.class, String.class)).thenReturn(true);
assertThat(converter.matches(USER_TYPE, STRING_TYPE)).isTrue();
}
@Test // DATACMNS-683
void toIdConverterDoesNotMatchIfTargetTypeIsAssignableFromSource() throws NoSuchMethodException {
converter.setApplicationContext(initContextWithRepo());
assertMatches(false);
@SuppressWarnings("rawtypes")
Optional<ToIdConverter> toIdConverter = (Optional<ToIdConverter>) ReflectionTestUtils.getField(converter,
"toIdConverter");
Method method = Wrapper.class.getMethod("foo", User.class);
TypeDescriptor target = TypeDescriptor.nested(new MethodParameter(method, 0), 0);
assertThat(toIdConverter).map(it -> it.matches(SUB_USER_TYPE, target)).hasValue(false);
}
private ApplicationContext initContextWithRepo() {
BeanDefinitionBuilder builder = BeanDefinitionBuilder.rootBeanDefinition(DummyRepositoryFactoryBean.class);
builder.addConstructorArgValue(UserRepository.class);
DefaultListableBeanFactory factory = new DefaultListableBeanFactory();
factory.registerBeanDefinition("provider", builder.getBeanDefinition());
GenericApplicationContext ctx = new GenericApplicationContext(factory);
ctx.refresh();
return ctx;
}
static interface Wrapper {
void foo(@ModelAttribute User user);
}
private static class User {
}
private static class SubUser extends User {}
private static interface UserRepository extends CrudRepository<User, Long> {
}
}