package net.bytebuddy.asm;
import net.bytebuddy.ByteBuddy;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.dynamic.loading.ClassLoadingStrategy;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.Arrays;
import java.util.Collection;
import static net.bytebuddy.matcher.ElementMatchers.named;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
@RunWith(Parameterized.class)
public class AdviceCustomAnnotationOnParameterTest {
private static final String FOO = "foo";
@Parameterized.Parameters
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][]{
{BooleanValue.class, boolean.class, false},
{ByteValue.class, byte.class, (byte) 0},
{ShortValue.class, short.class, (short) 0},
{CharacterValue.class, char.class, (char) 0},
{IntegerValue.class, int.class, 0},
{LongValue.class, long.class, 0L},
{FloatValue.class, float.class, 0f},
{DoubleValue.class, double.class, 0d},
{ReferenceValue.class, String.class, FOO},
});
}
private final Class<?> target;
private final Class<?> argumentType;
private final Object expected;
public AdviceCustomAnnotationOnParameterTest(Class<?> target, Class<?> argumentType, Object expected) {
this.target = target;
this.argumentType = argumentType;
this.expected = expected;
}
@Test
public void testPrimitiveField() throws Exception {
Class<?> type = new ByteBuddy()
.redefine(target)
.visit(Advice.withCustomMapping()
.bind(ArgumentValue.class, new MethodDescription.ForLoadedMethod(target.getDeclaredMethod(FOO, argumentType)).getParameters().getOnly())
.to(target)
.on(named(FOO)))
.make()
.load(ClassLoadingStrategy.BOOTSTRAP_LOADER, ClassLoadingStrategy.Default.WRAPPER)
.getLoaded();
assertThat(type.getDeclaredMethod(FOO, argumentType).invoke(type.getDeclaredConstructor().newInstance(), expected), is(expected));
}
@Test
public void testBoxedField() throws Exception {
Class<?> type = new ByteBuddy()
.redefine(target)
.visit(Advice.withCustomMapping()
.bind(ArgumentValue.class, new MethodDescription.ForLoadedMethod(target.getDeclaredMethod(FOO, argumentType)).getParameters().getOnly())
.to(BoxedFieldAdvice.class)
.on(named(FOO)))
.make()
.load(ClassLoadingStrategy.BOOTSTRAP_LOADER, ClassLoadingStrategy.Default.WRAPPER)
.getLoaded();
assertThat(type.getDeclaredMethod(FOO, argumentType).invoke(type.getDeclaredConstructor().newInstance(), expected), is(expected));
}
public static class BoxedFieldAdvice {
@Advice.OnMethodExit
static void exit(@ArgumentValue Object value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
@Retention(RetentionPolicy.RUNTIME)
public @interface ArgumentValue {
/* empty */
}
public static class BooleanValue {
public Object foo(boolean value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue boolean value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class ByteValue {
public Object foo(byte value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue byte value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class ShortValue {
public Object foo(short value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue short value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class CharacterValue {
public Object foo(char value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue char value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class IntegerValue {
public Object foo(int value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue int value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class LongValue {
public Object foo(long value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue long value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class FloatValue {
public Object foo(float value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue float value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class DoubleValue {
public Object foo(double value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue double value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
public static class ReferenceValue {
public Object foo(String value) {
return null;
}
@Advice.OnMethodExit
static void exit(@ArgumentValue String value, @Advice.Return(readOnly = false) Object returned) {
returned = value;
}
}
}