/*
* Copyright 2011-2014 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.mongodb.core.convert;
import static org.hamcrest.Matchers.*;
import static org.junit.Assert.*;
import java.net.URL;
import java.text.DateFormat;
import java.text.Format;
import java.util.Arrays;
import java.util.Date;
import java.util.Locale;
import java.util.UUID;
import org.bson.types.Binary;
import org.bson.types.ObjectId;
import org.joda.time.DateTime;
import org.junit.Test;
import org.springframework.aop.framework.ProxyFactory;
import org.springframework.core.convert.converter.Converter;
import org.springframework.core.convert.support.DefaultConversionService;
import org.springframework.core.convert.support.GenericConversionService;
import org.springframework.data.mongodb.core.convert.MongoConverters.StringToBigIntegerConverter;
import com.mongodb.DBRef;
/**
* Unit tests for {@link CustomConversions}.
*
* @author Oliver Gierke
* @auhtor Christoph Strobl
*/
public class CustomConversionsUnitTests {
@Test
@SuppressWarnings("unchecked")
public void findsBasicReadAndWriteConversions() {
CustomConversions conversions = new CustomConversions(Arrays.asList(FormatToStringConverter.INSTANCE,
StringToFormatConverter.INSTANCE));
assertThat(conversions.getCustomWriteTarget(Format.class, null), is(typeCompatibleWith(String.class)));
assertThat(conversions.getCustomWriteTarget(String.class, null), is(nullValue()));
assertThat(conversions.hasCustomReadTarget(String.class, Format.class), is(true));
assertThat(conversions.hasCustomReadTarget(String.class, Locale.class), is(false));
}
@Test
@SuppressWarnings("unchecked")
public void considersSubtypesCorrectly() {
CustomConversions conversions = new CustomConversions(Arrays.asList(NumberToStringConverter.INSTANCE,
StringToNumberConverter.INSTANCE));
assertThat(conversions.getCustomWriteTarget(Long.class, null), is(typeCompatibleWith(String.class)));
assertThat(conversions.hasCustomReadTarget(String.class, Long.class), is(true));
}
@Test
public void considersTypesWeRegisteredConvertersForAsSimple() {
CustomConversions conversions = new CustomConversions(Arrays.asList(FormatToStringConverter.INSTANCE));
assertThat(conversions.isSimpleType(UUID.class), is(true));
}
/**
* @see DATAMONGO-240
*/
@Test
public void considersObjectIdToBeSimpleType() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.isSimpleType(ObjectId.class), is(true));
assertThat(conversions.hasCustomWriteTarget(ObjectId.class), is(false));
}
/**
* @see DATAMONGO-240
*/
@Test
public void considersCustomConverterForSimpleType() {
CustomConversions conversions = new CustomConversions(Arrays.asList(new Converter<ObjectId, String>() {
public String convert(ObjectId source) {
return source == null ? null : source.toString();
}
}));
assertThat(conversions.isSimpleType(ObjectId.class), is(true));
assertThat(conversions.hasCustomWriteTarget(ObjectId.class), is(true));
assertThat(conversions.hasCustomReadTarget(ObjectId.class, String.class), is(true));
assertThat(conversions.hasCustomReadTarget(ObjectId.class, Object.class), is(false));
}
@Test
public void considersDBRefsToBeSimpleTypes() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.isSimpleType(DBRef.class), is(true));
}
@Test
public void populatesConversionServiceCorrectly() {
GenericConversionService conversionService = new DefaultConversionService();
CustomConversions conversions = new CustomConversions(Arrays.asList(StringToFormatConverter.INSTANCE));
conversions.registerConvertersIn(conversionService);
assertThat(conversionService.canConvert(String.class, Format.class), is(true));
}
/**
* @see DATAMONGO-259
*/
@Test
public void doesNotConsiderTypeSimpleIfOnlyReadConverterIsRegistered() {
CustomConversions conversions = new CustomConversions(Arrays.asList(StringToFormatConverter.INSTANCE));
assertThat(conversions.isSimpleType(Format.class), is(false));
}
/**
* @see DATAMONGO-298
*/
@Test
public void discoversConvertersForSubtypesOfMongoTypes() {
CustomConversions conversions = new CustomConversions(Arrays.asList(StringToIntegerConverter.INSTANCE));
assertThat(conversions.hasCustomReadTarget(String.class, Integer.class), is(true));
assertThat(conversions.hasCustomWriteTarget(String.class, Integer.class), is(true));
}
/**
* @see DATAMONGO-342
*/
@Test
public void doesNotHaveConverterForStringToBigIntegerByDefault() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.hasCustomWriteTarget(String.class), is(false));
assertThat(conversions.getCustomWriteTarget(String.class), is(nullValue()));
conversions = new CustomConversions(Arrays.asList(StringToBigIntegerConverter.INSTANCE));
assertThat(conversions.hasCustomWriteTarget(String.class), is(false));
assertThat(conversions.getCustomWriteTarget(String.class), is(nullValue()));
}
/**
* @see DATAMONGO-390
*/
@Test
public void considersBinaryASimpleType() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.isSimpleType(Binary.class), is(true));
}
/**
* @see DATAMONGO-462
*/
@Test
public void hasWriteConverterForURL() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.hasCustomWriteTarget(URL.class), is(true));
}
/**
* @see DATAMONGO-462
*/
@Test
public void readTargetForURL() {
CustomConversions conversions = new CustomConversions();
assertThat(conversions.hasCustomReadTarget(String.class, URL.class), is(true));
}
/**
* @see DATAMONGO-795
*/
@Test
@SuppressWarnings("rawtypes")
public void favorsCustomConverterForIndeterminedTargetType() {
CustomConversions conversions = new CustomConversions(Arrays.asList(DateTimeToStringConverter.INSTANCE));
assertThat(conversions.getCustomWriteTarget(DateTime.class, null), is(equalTo((Class) String.class)));
}
/**
* @see DATAMONGO-881
*/
@Test
public void customConverterOverridesDefault() {
CustomConversions conversions = new CustomConversions(Arrays.asList(CustomDateTimeConverter.INSTANCE));
GenericConversionService conversionService = new DefaultConversionService();
conversions.registerConvertersIn(conversionService);
assertThat(conversionService.convert(new DateTime(), Date.class), is(new Date(0)));
}
/**
* @see DATAMONGO-1001
*/
@Test
public void shouldSelectPropertCustomWriteTargetForCglibProxiedType() {
CustomConversions conversions = new CustomConversions(Arrays.asList(FormatToStringConverter.INSTANCE));
assertThat(conversions.getCustomWriteTarget(createProxyTypeFor(Format.class)), is(typeCompatibleWith(String.class)));
}
/**
* @see DATAMONGO-1001
*/
@Test
public void shouldSelectPropertCustomReadTargetForCglibProxiedType() {
CustomConversions conversions = new CustomConversions(Arrays.asList(CustomObjectToStringConverter.INSTANCE));
assertThat(conversions.hasCustomReadTarget(createProxyTypeFor(Object.class), String.class), is(true));
}
private static Class<?> createProxyTypeFor(Class<?> type) {
ProxyFactory factory = new ProxyFactory();
factory.setProxyTargetClass(true);
factory.setTargetClass(type);
return factory.getProxy().getClass();
}
enum FormatToStringConverter implements Converter<Format, String> {
INSTANCE;
public String convert(Format source) {
return source.toString();
}
}
enum StringToFormatConverter implements Converter<String, Format> {
INSTANCE;
public Format convert(String source) {
return DateFormat.getInstance();
}
}
enum NumberToStringConverter implements Converter<Number, String> {
INSTANCE;
public String convert(Number source) {
return source.toString();
}
}
enum StringToNumberConverter implements Converter<String, Number> {
INSTANCE;
public Number convert(String source) {
return 0L;
}
}
enum StringToIntegerConverter implements Converter<String, Integer> {
INSTANCE;
public Integer convert(String source) {
return 0;
}
}
enum DateTimeToStringConverter implements Converter<DateTime, String> {
INSTANCE;
@Override
public String convert(DateTime source) {
return "";
}
}
enum CustomDateTimeConverter implements Converter<DateTime, Date> {
INSTANCE;
@Override
public Date convert(DateTime source) {
return new Date(0);
}
}
enum CustomObjectToStringConverter implements Converter<Object, String> {
INSTANCE;
@Override
public String convert(Object source) {
return source != null ? source.toString() : null;
}
}
}