/*
* Copyright 2010-2012 VMware and contributors
*
* 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.springsource.loaded.test;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import java.lang.reflect.Modifier;
import org.junit.Test;
import org.springsource.loaded.FieldMember;
import org.springsource.loaded.MethodMember;
import org.springsource.loaded.ReloadableType;
import org.springsource.loaded.TypeDescriptor;
import org.springsource.loaded.TypeDescriptorExtractor;
import org.springsource.loaded.TypeRegistry;
/**
* Tests for TypeDescriptor usage.
*
* @author Andy Clement
* @since 1.0
*/
public class TypeDescriptorTests extends SpringLoadedTests {
@Test
public void simpleMethodDescriptors() {
TypeRegistry registry = getTypeRegistry("data.SimpleClass");
byte[] bytes = loadBytesForClass("data.SimpleClass");
TypeDescriptor typeDescriptor = new TypeDescriptorExtractor(registry).extract(bytes, true);
assertEquals("data/SimpleClass", typeDescriptor.getName());
assertEquals("java/lang/Object", typeDescriptor.getSupertypeName());
assertEquals(0, typeDescriptor.getSuperinterfacesName().length);
assertEquals(0x20, typeDescriptor.getModifiers());
assertEquals(0, typeDescriptor.getFields().length);
assertEquals(5, typeDescriptor.getMethods().length); // will include catchers
assertEquals("0x1 foo()V", typeDescriptor.getMethods()[0].toString());
}
@Test
public void complexMethodDescriptors() {
TypeRegistry registry = getTypeRegistry("data.ComplexClass");
byte[] bytes = loadBytesForClass("data.ComplexClass");
TypeDescriptor typeDescriptor = new TypeDescriptorExtractor(registry).extract(bytes, true);
assertEquals("data/ComplexClass", typeDescriptor.getName());
assertEquals("data/SimpleClass", typeDescriptor.getSupertypeName());
assertEquals(1, typeDescriptor.getSuperinterfacesName().length);
assertEquals("java/io/Serializable", typeDescriptor.getSuperinterfacesName()[0]);
assertEquals(0x20, typeDescriptor.getModifiers());
assertEquals(3, typeDescriptor.getFields().length);
assertEquals(9, typeDescriptor.getMethods().length);
assertEquals("0x2 privateMethod()I", typeDescriptor.getMethods()[0].toString());
assertEquals("0x1 publicMethod()Ljava/lang/String;", typeDescriptor.getMethods()[1].toString());
assertEquals("0x0 defaultMethod()Ljava/util/List;", typeDescriptor.getMethods()[2].toString());
assertEquals("0x0 thrower()V throws java/lang/Exception java/lang/IllegalStateException",
typeDescriptor.getMethods()[3].toString());
}
@Test
public void fieldDescriptors() {
TypeRegistry registry = getTypeRegistry("");
byte[] bytes = loadBytesForClass("data.SomeFields");
TypeDescriptor typeDescriptor = new TypeDescriptorExtractor(registry).extract(bytes, false);
FieldMember[] fields = typeDescriptor.getFields();
assertEquals(4, fields.length);
FieldMember privateField = fields[0];
assertEquals(Modifier.PRIVATE, privateField.getModifiers());
assertEquals("privateField", privateField.getName());
assertEquals("I", privateField.getDescriptor());
assertNull(privateField.getGenericSignature());
assertEquals("0x2 I privateField", privateField.toString());
FieldMember publicField = fields[1];
assertEquals(Modifier.PUBLIC, publicField.getModifiers());
assertEquals("publicField", publicField.getName());
assertEquals("Ljava/lang/String;", publicField.getDescriptor());
assertNull(publicField.getGenericSignature());
assertEquals("0x1 Ljava/lang/String; publicField", publicField.toString());
FieldMember defaultField = fields[2];
assertEquals(0, defaultField.getModifiers());
assertEquals("defaultField", defaultField.getName());
assertEquals("Ljava/util/List;", defaultField.getDescriptor());
assertEquals("Ljava/util/List<Ljava/lang/String;>;", defaultField.getGenericSignature());
assertEquals("0x0 Ljava/util/List; defaultField [Ljava/util/List<Ljava/lang/String;>;]", defaultField.toString());
FieldMember protectedField = fields[3];
assertEquals(Modifier.PROTECTED, protectedField.getModifiers());
assertEquals("protectedField", protectedField.getName());
assertEquals("Ljava/util/Map;", protectedField.getDescriptor());
assertEquals("Ljava/util/Map<Ljava/lang/String;Ljava/util/List<Ljava/lang/Integer;>;>;",
protectedField.getGenericSignature());
assertEquals(
"0x4 Ljava/util/Map; protectedField [Ljava/util/Map<Ljava/lang/String;Ljava/util/List<Ljava/lang/Integer;>;>;]",
protectedField.toString());
}
@Test
public void constructorDescriptors() {
TypeRegistry registry = getTypeRegistry("");
byte[] bytes = loadBytesForClass("data.SomeConstructors");
TypeDescriptor typeDescriptor = new TypeDescriptorExtractor(registry).extract(bytes, false);
MethodMember[] ctors = typeDescriptor.getConstructors();
assertEquals(3, ctors.length);
MethodMember publicCtor = ctors[0];
assertEquals(Modifier.PUBLIC, publicCtor.getModifiers());
assertEquals("<init>", publicCtor.getName());
assertEquals("()V", publicCtor.getDescriptor());
assertNull(publicCtor.getGenericSignature());
assertEquals("0x1 <init>()V", publicCtor.toString());
MethodMember privateCtor = ctors[1];
assertEquals(Modifier.PRIVATE, privateCtor.getModifiers());
assertEquals("<init>", privateCtor.getName());
assertEquals("(Ljava/lang/String;I)V", privateCtor.getDescriptor());
assertNull(privateCtor.getGenericSignature());
assertEquals("0x2 <init>(Ljava/lang/String;I)V", privateCtor.toString());
MethodMember protCtor = ctors[2];
assertEquals(Modifier.PROTECTED, protCtor.getModifiers());
assertEquals("<init>", protCtor.getName());
assertEquals("(J)V", protCtor.getDescriptor());
assertNull(protCtor.getGenericSignature());
assertEquals("0x4 <init>(J)V", protCtor.toString());
}
@Test
public void constructorDescriptorsAfterReloading() {
TypeRegistry registry = getTypeRegistry("");
String d = "data.SomeConstructors";
ReloadableType rtype = registry.addType(d, loadBytesForClass(d));
MethodMember[] latestConstructors = rtype.getLatestTypeDescriptor().getConstructors();
assertEquals(3, latestConstructors.length);
rtype.loadNewVersion("2", retrieveRename(d, d + "002"));
latestConstructors = rtype.getLatestTypeDescriptor().getConstructors();
assertEquals(1, latestConstructors.length);
}
@Test
public void defaultConstructorDescriptor() {
TypeRegistry registry = getTypeRegistry("");
byte[] bytes = loadBytesForClass("data.SomeConstructors2");
TypeDescriptor typeDescriptor = new TypeDescriptorExtractor(registry).extract(bytes, false);
MethodMember[] ctors = typeDescriptor.getConstructors();
assertEquals(1, ctors.length);
MethodMember publicCtor = ctors[0];
// visibility matches type vis (for public/default)
assertEquals(Modifier.PUBLIC, publicCtor.getModifiers());
assertEquals("<init>", publicCtor.getName());
assertEquals("()V", publicCtor.getDescriptor());
assertNull(publicCtor.getGenericSignature());
assertEquals("0x1 <init>()V", publicCtor.toString());
}
}