// Copyright 2006-2013 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.tapestry5.internal.services;
import org.apache.tapestry5.internal.InternalComponentResources;
import org.apache.tapestry5.internal.plastic.asm.ClassWriter;
import org.apache.tapestry5.internal.plastic.asm.MethodVisitor;
import org.apache.tapestry5.internal.t5internal.pages.BasicComponent;
import org.apache.tapestry5.internal.test.InternalBaseTestCase;
import org.apache.tapestry5.ioc.Registry;
import org.apache.tapestry5.ioc.RegistryBuilder;
import org.apache.tapestry5.modules.TapestryModule;
import org.apache.tapestry5.runtime.Component;
import org.apache.tapestry5.services.UpdateListenerHub;
import org.testng.annotations.AfterClass;
import org.testng.annotations.BeforeClass;
import org.testng.annotations.Test;
import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import static org.apache.tapestry5.internal.plastic.asm.Opcodes.ACC_PUBLIC;
import static org.apache.tapestry5.internal.plastic.asm.Opcodes.ARETURN;
/**
* Tests for {@link org.apache.tapestry5.internal.services.ComponentInstantiatorSourceImpl}. Several of these tests are
* more of the form of integration tests that instantiate the Tapestry IoC Registry.
*/
public class ComponentInstantiatorSourceImplTest extends InternalBaseTestCase
{
// BaseComponent and SynthComponent need to be inside controlled packages, as defined
// by some contributed LibraryMapping.
// org.apache.tapestry5.internal.t5internal is a handy package to use.
private static final String BASIC_COMPONENT_CLASSNAME = BasicComponent.class.getName();
private static final String SYNTH_COMPONENT_CLASSNAME = "org.apache.tapestry5.internal.t5internal.pages.SynthComponent";
private ComponentInstantiatorSource source;
private ClassCreationHelper helper;
private Registry registry;
/**
* This allows tests the exists() method.
*/
@Test
public void component_class_reload() throws Exception
{
// Ensure it doesn't already exist:
assertFalse(source.exists(SYNTH_COMPONENT_CLASSNAME));
// Create the class on the fly.
createSynthComponentClass("Original");
assertTrue(source.exists(SYNTH_COMPONENT_CLASSNAME));
getMocksControl().resetToNice();
Named named = (Named) createComponent(SYNTH_COMPONENT_CLASSNAME);
assertEquals(named.getName(), "Original");
long dtm = helper.readDTM(SYNTH_COMPONENT_CLASSNAME);
while (true)
{
createSynthComponentClass("Updated");
if (helper.readDTM(SYNTH_COMPONENT_CLASSNAME) != dtm)
break;
// Keep re-writing the file until we see the DTM change.
}
// Detect the change and clear out the internal caches
UpdateListenerHub hub = registry.getService("UpdateListenerHub", UpdateListenerHub.class);
hub.fireCheckForUpdates();
// This will be the new version of the class
named = (Named) createComponent(SYNTH_COMPONENT_CLASSNAME);
assertEquals(named.getName(), "Updated");
}
@Test
public void access_to_library_name_via_component_resources() throws Exception
{
Instantiator instantiator = source.getInstantiator(BASIC_COMPONENT_CLASSNAME);
assertEquals(instantiator.getModel().getLibraryName(), "t5internal");
}
private void createSynthComponentClass(String name) throws Exception
{
ClassWriter cw = helper.createWriter(SYNTH_COMPONENT_CLASSNAME, BASIC_COMPONENT_CLASSNAME, Named.class.getName());
helper.implementPublicConstructor(cw, BASIC_COMPONENT_CLASSNAME);
MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "getName", "()Ljava/lang/String;", null, null);
mv.visitCode();
mv.visitLdcInsn(name);
mv.visitInsn(ARETURN);
mv.visitEnd();
cw.visitEnd();
helper.writeFile(cw, SYNTH_COMPONENT_CLASSNAME);
}
private Component createComponent(String classname)
{
InternalComponentResources resources = mockInternalComponentResources();
replay();
Instantiator inst = source.getInstantiator(classname);
Component target = inst.newInstance(resources);
verify();
return target;
}
@BeforeClass
public void setup_tests() throws Exception
{
helper = new ClassCreationHelper();
File extraClasspath = new File(helper.tempDir);
extraClasspath.mkdirs();
URL url = extraClasspath.toURL();
URLClassLoader extraLoader = new URLClassLoader(new URL[]
{url}, Thread.currentThread().getContextClassLoader());
RegistryBuilder builder = new RegistryBuilder(extraLoader);
builder.add(TapestryModule.class, ForceDevelopmentModeModule.class, AddTransformPagesToCISModule.class);
registry = builder.build();
source = registry.getService(ComponentInstantiatorSource.class);
}
@AfterClass
public void cleanup_tests()
{
registry.shutdown();
registry = null;
source = null;
}
}