/*
* Copyright 2002-2016 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.format.support;
import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;
import java.text.ParseException;
import java.util.HashSet;
import java.util.Locale;
import java.util.Set;
import org.junit.Test;
import org.springframework.context.i18n.LocaleContextHolder;
import org.springframework.core.annotation.AliasFor;
import org.springframework.core.convert.ConversionFailedException;
import org.springframework.core.convert.TypeDescriptor;
import org.springframework.format.AnnotationFormatterFactory;
import org.springframework.format.Formatter;
import org.springframework.format.FormatterRegistrar;
import org.springframework.format.FormatterRegistry;
import org.springframework.format.Parser;
import org.springframework.format.Printer;
import org.springframework.format.annotation.NumberFormat;
import static org.junit.Assert.*;
/**
* @author Rossen Stoyanchev
* @author Juergen Hoeller
*/
public class FormattingConversionServiceFactoryBeanTests {
@Test
public void testDefaultFormattersOn() throws Exception {
FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();
factory.afterPropertiesSet();
FormattingConversionService fcs = factory.getObject();
TypeDescriptor descriptor = new TypeDescriptor(TestBean.class.getDeclaredField("pattern"));
LocaleContextHolder.setLocale(Locale.GERMAN);
try {
Object value = fcs.convert("15,00", TypeDescriptor.valueOf(String.class), descriptor);
assertEquals(15.0, value);
value = fcs.convert(15.0, descriptor, TypeDescriptor.valueOf(String.class));
assertEquals("15", value);
}
finally {
LocaleContextHolder.resetLocaleContext();
}
}
@Test
public void testDefaultFormattersOff() throws Exception {
FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();
factory.setRegisterDefaultFormatters(false);
factory.afterPropertiesSet();
FormattingConversionService fcs = factory.getObject();
TypeDescriptor descriptor = new TypeDescriptor(TestBean.class.getDeclaredField("pattern"));
try {
fcs.convert("15,00", TypeDescriptor.valueOf(String.class), descriptor);
fail("This format should not be parseable");
}
catch (ConversionFailedException ex) {
assertTrue(ex.getCause() instanceof NumberFormatException);
}
}
@Test
public void testCustomFormatter() throws Exception {
FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();
Set<Object> formatters = new HashSet<>();
formatters.add(new TestBeanFormatter());
formatters.add(new SpecialIntAnnotationFormatterFactory());
factory.setFormatters(formatters);
factory.afterPropertiesSet();
FormattingConversionService fcs = factory.getObject();
TestBean testBean = fcs.convert("5", TestBean.class);
assertEquals(5, testBean.getSpecialInt());
assertEquals("5", fcs.convert(testBean, String.class));
TypeDescriptor descriptor = new TypeDescriptor(TestBean.class.getDeclaredField("specialInt"));
Object value = fcs.convert(":5", TypeDescriptor.valueOf(String.class), descriptor);
assertEquals(5, value);
value = fcs.convert(5, descriptor, TypeDescriptor.valueOf(String.class));
assertEquals(":5", value);
}
@Test
public void testFormatterRegistrar() throws Exception {
FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();
Set<FormatterRegistrar> registrars = new HashSet<>();
registrars.add(new TestFormatterRegistrar());
factory.setFormatterRegistrars(registrars);
factory.afterPropertiesSet();
FormattingConversionService fcs = factory.getObject();
TestBean testBean = fcs.convert("5", TestBean.class);
assertEquals(5, testBean.getSpecialInt());
assertEquals("5", fcs.convert(testBean, String.class));
}
@Test
public void testInvalidFormatter() throws Exception {
FormattingConversionServiceFactoryBean factory = new FormattingConversionServiceFactoryBean();
Set<Object> formatters = new HashSet<>();
formatters.add(new Object());
factory.setFormatters(formatters);
try {
factory.afterPropertiesSet();
fail("Expected formatter to be rejected");
}
catch (IllegalArgumentException ex) {
// expected
}
}
@Target({ElementType.METHOD, ElementType.FIELD, ElementType.PARAMETER})
@Retention(RetentionPolicy.RUNTIME)
private @interface SpecialInt {
@AliasFor("alias")
String value() default "";
@AliasFor("value")
String alias() default "";
}
private static class TestBean {
@NumberFormat(pattern = "##,00")
private double pattern;
@SpecialInt("aliased")
private int specialInt;
public int getSpecialInt() {
return specialInt;
}
public void setSpecialInt(int field) {
this.specialInt = field;
}
}
private static class TestBeanFormatter implements Formatter<TestBean> {
@Override
public String print(TestBean object, Locale locale) {
return String.valueOf(object.getSpecialInt());
}
@Override
public TestBean parse(String text, Locale locale) throws ParseException {
TestBean object = new TestBean();
object.setSpecialInt(Integer.parseInt(text));
return object;
}
}
private static class SpecialIntAnnotationFormatterFactory implements AnnotationFormatterFactory<SpecialInt> {
private final Set<Class<?>> fieldTypes = new HashSet<>(1);
public SpecialIntAnnotationFormatterFactory() {
fieldTypes.add(Integer.class);
}
@Override
public Set<Class<?>> getFieldTypes() {
return fieldTypes;
}
@Override
public Printer<?> getPrinter(SpecialInt annotation, Class<?> fieldType) {
assertEquals("aliased", annotation.value());
assertEquals("aliased", annotation.alias());
return new Printer<Integer>() {
@Override
public String print(Integer object, Locale locale) {
return ":" + object.toString();
}
};
}
@Override
public Parser<?> getParser(SpecialInt annotation, Class<?> fieldType) {
assertEquals("aliased", annotation.value());
assertEquals("aliased", annotation.alias());
return new Parser<Integer>() {
@Override
public Integer parse(String text, Locale locale) throws ParseException {
return Integer.parseInt(text.substring(1));
}
};
}
}
private static class TestFormatterRegistrar implements FormatterRegistrar {
@Override
public void registerFormatters(FormatterRegistry registry) {
registry.addFormatter(new TestBeanFormatter());
}
}
}