// Copyright 2006, 2007 The Apache Software Foundation
//
// 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.apache.tapestry.ioc.internal;
import java.lang.reflect.Method;
import org.apache.tapestry.ioc.ModuleBuilderSource;
import org.apache.tapestry.ioc.ServiceResources;
import org.apache.tapestry.ioc.internal.util.InternalUtils;
import org.slf4j.Logger;
import org.testng.annotations.Test;
public class ServiceDecoratorImplTest extends IOCInternalTestCase
{
private static final String SERVICE_ID = "ioc.Fie";
private ModuleBuilderSource newSource(final Object builder)
{
return new ModuleBuilderSource()
{
public Object getModuleBuilder()
{
return builder;
}
};
}
/**
* Also, test logging of decorator method invocation.
*
* @throws Exception
*/
@Test
public void decorator_returns_interceptor() throws Exception
{
ServiceDecoratorFixture fixture = new ServiceDecoratorFixture();
Method m = findMethod(fixture, "decoratorReturnsInterceptor");
ServiceResources resources = mockServiceResources();
Logger logger = mockLogger();
fixture._expectedDelegate = mockFieService();
fixture._interceptorToReturn = mockFieService();
ModuleBuilderSource source = newSource(fixture);
trainForConstructor(resources, logger);
train_isDebugEnabled(logger, true);
logger.debug(IOCMessages.invokingMethod(InternalUtils.asString(m, getClassFactory())));
replay();
// Check that the delegate gets passed in; check that the return value of the
// decorator method is the return value of the ServiceDecorator.
ServiceDecoratorImpl decorator = new ServiceDecoratorImpl(m, source, resources,
getClassFactory());
Object interceptor = decorator.createInterceptor(fixture._expectedDelegate);
assertSame(interceptor, fixture._interceptorToReturn);
verify();
}
@Test
public void decorator_returns_null_interceptor() throws Exception
{
ServiceDecoratorFixture fixture = new ServiceDecoratorFixture();
ModuleBuilderSource source = newSource(fixture);
ServiceResources resources = mockServiceResources();
Logger logger = mockLogger();
Object delegate = mockFieService();
trainForConstructor(resources, logger);
train_isDebugEnabled(logger, false);
replay();
Method m = findMethod(fixture, "decorateReturnNull");
ServiceDecoratorImpl decorator = new ServiceDecoratorImpl(m, source, resources,
getClassFactory());
Object interceptor = decorator.createInterceptor(delegate);
assertNull(interceptor);
verify();
}
@Test
public void decorator_returns_incorrect_type() throws Exception
{
ServiceDecoratorFixture fixture = new ServiceDecoratorFixture();
ModuleBuilderSource source = newSource(fixture);
ServiceResources resources = mockServiceResources();
Logger logger = mockLogger();
fixture._expectedDelegate = mockFieService();
fixture._interceptorToReturn = newMock(FoeService.class);
Method m = findMethod(fixture, "decoratorUntyped");
trainForConstructor(resources, logger);
train_isDebugEnabled(logger, false);
logger.warn(IOCMessages.decoratorReturnedWrongType(
m,
SERVICE_ID,
fixture._interceptorToReturn,
FieService.class));
replay();
ServiceDecoratorImpl decorator = new ServiceDecoratorImpl(m, source, resources,
getClassFactory());
Object interceptor = decorator.createInterceptor(fixture._expectedDelegate);
assertNull(interceptor);
verify();
}
@Test
public void decorator_method_throws_exception() throws Exception
{
ServiceDecoratorFixture fixture = new ServiceDecoratorFixture();
ModuleBuilderSource source = newSource(fixture);
ServiceResources resources = mockServiceResources();
Logger logger = mockLogger();
Object delegate = mockFieService();
fixture._exception = new RuntimeException("Ouch!");
trainForConstructor(resources, logger);
train_isDebugEnabled(logger, false);
replay();
Method m = findMethod(fixture, "decoratorThrowsException");
ServiceDecoratorImpl decorator = new ServiceDecoratorImpl(m, source, resources,
getClassFactory());
try
{
decorator.createInterceptor(delegate);
unreachable();
}
catch (RuntimeException ex)
{
assertEquals(ex.getMessage(), IOCMessages.decoratorMethodError(m, SERVICE_ID, ex
.getCause()));
Throwable cause = ex.getCause();
assertSame(cause, fixture._exception);
}
verify();
}
private FieService mockFieService()
{
return newMock(FieService.class);
}
private void trainForConstructor(ServiceResources resources, Logger logger)
{
train_getServiceId(resources, SERVICE_ID);
train_getServiceInterface(resources, FieService.class);
train_getLogger(resources, logger);
}
}