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/**
* Copyright (C) 2008 Google Inc.
*
* 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 com.google.inject.internal.util;
import static com.google.inject.Asserts.assertContains;
import com.google.inject.AbstractModule;
import com.google.inject.CreationException;
import com.google.inject.Guice;
import com.google.inject.Inject;
import com.google.inject.Injector;
import com.google.inject.matcher.Matchers;
import junit.framework.TestCase;
import java.lang.reflect.Modifier;
/**
* @author jessewilson@google.com (Jesse Wilson)
*/
public class LineNumbersTest extends TestCase {
public void testLineNumbers() {
try {
Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(A.class);
}
});
fail();
} catch (CreationException expected) {
assertContains(expected.getMessage(),
"1) No implementation for " + B.class.getName() + " was bound.",
"for parameter 0 at " + A.class.getName() + ".<init>(LineNumbersTest.java:",
"at " + LineNumbersTest.class.getName(), ".configure(LineNumbersTest.java:");
}
}
static class A {
@Inject A(B b) {}
}
public interface B {}
/*if[AOP]*/
public void testCanHandleLineNumbersForGuiceGeneratedClasses() {
try {
Guice.createInjector(new AbstractModule() {
protected void configure() {
bindInterceptor(Matchers.only(A.class), Matchers.any(),
new org.aopalliance.intercept.MethodInterceptor() {
public Object invoke(org.aopalliance.intercept.MethodInvocation methodInvocation) {
return null;
}
});
bind(A.class);
}
});
fail();
} catch (CreationException expected) {
assertContains(expected.getMessage(),
"1) No implementation for " + B.class.getName() + " was bound.",
"for parameter 0 at " + A.class.getName() + ".<init>(LineNumbersTest.java:",
"at " + LineNumbersTest.class.getName(), ".configure(LineNumbersTest.java:");
}
}
static class GeneratingClassLoader extends ClassLoader {
static String name = "__generated";
GeneratingClassLoader() {
super(B.class.getClassLoader());
}
Class<?> generate() {
org.objectweb.asm.ClassWriter cw =
new org.objectweb.asm.ClassWriter(org.objectweb.asm.ClassWriter.COMPUTE_MAXS);
cw.visit(org.objectweb.asm.Opcodes.V1_5,
Modifier.PUBLIC, name, null,
org.objectweb.asm.Type.getInternalName(Object.class), null);
String sig = "("+org.objectweb.asm.Type.getDescriptor(B.class)+")V";
org.objectweb.asm.MethodVisitor mv = cw.visitMethod(Modifier.PUBLIC, "<init>", sig, null, null);
mv.visitAnnotation(org.objectweb.asm.Type.getDescriptor(Inject.class), true);
mv.visitCode();
mv.visitVarInsn(org.objectweb.asm.Opcodes.ALOAD, 0);
mv.visitMethodInsn(org.objectweb.asm.Opcodes.INVOKESPECIAL,
org.objectweb.asm.Type.getInternalName(Object.class), "<init>", "()V" );
mv.visitInsn(org.objectweb.asm.Opcodes.RETURN);
mv.visitMaxs(0, 0);
mv.visitEnd();
cw.visitEnd();
byte[] buf = cw.toByteArray();
return defineClass(name.replace('/', '.'), buf, 0, buf.length);
}
}
public void testUnavailableByteCodeShowsUnknownSource() {
try {
Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(new GeneratingClassLoader().generate());
}
});
fail();
} catch (CreationException expected) {
assertContains(expected.getMessage(),
"1) No implementation for " + B.class.getName() + " was bound.",
"for parameter 0 at " + GeneratingClassLoader.name + ".<init>(Unknown Source)",
"at " + LineNumbersTest.class.getName(), ".configure(LineNumbersTest.java:");
}
}
public void testGeneratedClassesCanSucceed() {
final Class<?> generated = new GeneratingClassLoader().generate();
Injector injector = Guice.createInjector(new AbstractModule() {
protected void configure() {
bind(generated);
bind(B.class).toInstance(new B() {});
}
});
Object instance = injector.getInstance(generated);
assertEquals(instance.getClass(), generated);
}
/*end[AOP]*/
}
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