/*
* Copyright 2010-2012 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.batch.item.adapter;
import static org.junit.Assert.assertEquals;
import java.util.List;
import java.util.Set;
import java.util.TreeSet;
import org.junit.Test;
public class HippyMethodInvokerTests {
@Test
public void testVanillaMethodInvoker() throws Exception {
TestMethodAdapter adapter = new TestMethodAdapter();
adapter.setTargetMethod("handle");
adapter.setTargetObject(new PlainPojo());
assertEquals("2.0.foo", adapter.getMessage(2, "foo"));
}
@Test
public void testEmptyParameters() throws Exception {
TestMethodAdapter adapter = new TestMethodAdapter();
adapter.setTargetMethod("empty");
adapter.setTargetObject(new PlainPojo());
assertEquals(".", adapter.getMessage(2, "foo"));
}
@Test
public void testEmptyParametersEmptyArgs() throws Exception {
TestMethodAdapter adapter = new TestMethodAdapter();
adapter.setTargetMethod("empty");
adapter.setTargetObject(new PlainPojo());
assertEquals(".", adapter.getMessage());
}
@Test
public void testMissingArgument() throws Exception {
TestMethodAdapter adapter = new TestMethodAdapter();
adapter.setTargetMethod("missing");
adapter.setTargetObject(new PlainPojo());
assertEquals("foo.foo", adapter.getMessage(2, "foo"));
}
@Test
public void testWrongOrder() throws Exception {
TestMethodAdapter adapter = new TestMethodAdapter();
adapter.setTargetMethod("disorder");
adapter.setTargetObject(new PlainPojo());
assertEquals("2.0.foo", adapter.getMessage(2, "foo"));
}
@Test
public void testTwoArgsOfSameTypeWithInexactMatch() throws Exception {
HippyMethodInvoker invoker = new HippyMethodInvoker();
invoker.setTargetMethod("duplicate");
invoker.setTargetObject(new PlainPojo());
invoker.setArguments(new Object[] { "2", "foo" });
invoker.prepare();
assertEquals("foo.2", invoker.invoke());
}
@Test
public void testOverloadedMethodUsingInputWithoutExactMatch() throws Exception {
HippyMethodInvoker invoker = new HippyMethodInvoker();
invoker.setTargetMethod("foo");
@SuppressWarnings("unused")
class OverloadingPojo {
public Class<?> foo(List<?> arg) {
return List.class;
}
public Class<?> foo(Set<?> arg) {
return Set.class;
}
}
TreeSet<Object> arg = new TreeSet<Object>();
OverloadingPojo target = new OverloadingPojo();
assertEquals(target.foo(arg), Set.class);
invoker.setTargetObject(target);
invoker.setArguments(new Object[] { arg });
invoker.prepare();
assertEquals(invoker.invoke(), Set.class);
}
public static class PlainPojo {
public String handle(double value, String input) {
return value + "." + input;
}
public String disorder(String input, double value) {
return value + "." + input;
}
public String duplicate(String input, Object value) {
return value + "." + input;
}
public String missing(String input) {
return input + "." + input;
}
public String empty() {
return ".";
}
}
public static interface Service {
String getMessage(double value, String input);
}
public static class TestMethodAdapter extends AbstractMethodInvokingDelegator<String> implements Service {
@Override
public String getMessage(double value, String input) {
try {
return invokeDelegateMethodWithArguments(new Object[] { value, input });
}
catch (RuntimeException e) {
throw e;
}
catch (Exception e) {
throw new IllegalStateException(e);
}
}
public String getMessage() {
try {
return invokeDelegateMethodWithArguments(new Object[0]);
}
catch (RuntimeException e) {
throw e;
}
catch (Exception e) {
throw new IllegalStateException(e);
}
}
}
}