package net.bytebuddy.dynamic.scaffold.inline;
import net.bytebuddy.description.method.MethodDescription;
import net.bytebuddy.description.method.ParameterDescription;
import net.bytebuddy.description.method.ParameterList;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.description.type.TypeList;
import net.bytebuddy.implementation.Implementation;
import net.bytebuddy.implementation.bytecode.StackManipulation;
import net.bytebuddy.implementation.bytecode.StackSize;
import net.bytebuddy.test.utility.MockitoRule;
import net.bytebuddy.test.utility.ObjectPropertyAssertion;
import org.junit.Before;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;
import org.mockito.Mock;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.mockito.Mockito.*;
public class MethodRebaseResolverResolutionForRebasedConstructorTest {
private static final String FOO = "foo", BAR = "bar", QUX = "qux", BAZ = "baz";
@Rule
public TestRule mockitoRule = new MockitoRule(this);
@Mock
private MethodDescription.InDefinedShape methodDescription;
@Mock
private StackManipulation stackManipulation;
@Mock
private TypeDescription.Generic typeDescription, parameterType, placeholderType, returnType;
@Mock
private TypeDescription rawTypeDescription, rawParameterType, rawReturnType, otherPlaceHolderType, rawPlaceholderType;
@Mock
private MethodVisitor methodVisitor;
@Mock
private Implementation.Context implementationContext;
@Before
@SuppressWarnings("unchecked")
public void setUp() throws Exception {
when(typeDescription.asErasure()).thenReturn(rawTypeDescription);
when(methodDescription.isConstructor()).thenReturn(true);
when(methodDescription.getDeclaringType()).thenReturn(rawTypeDescription);
when(methodDescription.getReturnType()).thenReturn(returnType);
when(methodDescription.getParameters()).thenReturn(new ParameterList.Explicit.ForTypes(methodDescription, parameterType));
when(placeholderType.getStackSize()).thenReturn(StackSize.ZERO);
when(placeholderType.asErasure()).thenReturn(rawPlaceholderType);
when(placeholderType.asGenericType()).thenReturn(placeholderType);
when(rawPlaceholderType.asGenericType()).thenReturn(placeholderType);
when(parameterType.asGenericType()).thenReturn(parameterType);
when(parameterType.getStackSize()).thenReturn(StackSize.ZERO);
when(rawParameterType.getStackSize()).thenReturn(StackSize.ZERO);
when(parameterType.asErasure()).thenReturn(rawParameterType);
when(parameterType.accept(any(TypeDescription.Generic.Visitor.class))).thenReturn(parameterType);
when(rawParameterType.asGenericType()).thenReturn(parameterType);
when(methodDescription.getInternalName()).thenReturn(FOO);
when(methodDescription.getDescriptor()).thenReturn(QUX);
when(rawTypeDescription.getInternalName()).thenReturn(BAR);
when(rawPlaceholderType.getDescriptor()).thenReturn(BAZ);
when(otherPlaceHolderType.getDescriptor()).thenReturn(FOO);
when(returnType.asErasure()).thenReturn(rawReturnType);
}
@Test
public void testPreservation() throws Exception {
MethodRebaseResolver.Resolution resolution = MethodRebaseResolver.Resolution.ForRebasedConstructor.of(methodDescription, rawPlaceholderType);
assertThat(resolution.isRebased(), is(true));
assertThat(resolution.getResolvedMethod().getDeclaringType(), is(rawTypeDescription));
assertThat(resolution.getResolvedMethod().getInternalName(), is(MethodDescription.CONSTRUCTOR_INTERNAL_NAME));
assertThat(resolution.getResolvedMethod().getModifiers(), is(Opcodes.ACC_SYNTHETIC | Opcodes.ACC_PRIVATE));
assertThat(resolution.getResolvedMethod().getReturnType(), is(TypeDescription.Generic.VOID));
assertThat(resolution.getResolvedMethod().getParameters(), is((ParameterList<ParameterDescription.InDefinedShape>) new ParameterList.Explicit
.ForTypes(resolution.getResolvedMethod(), parameterType, placeholderType)));
StackManipulation.Size size = resolution.getAdditionalArguments().apply(methodVisitor, implementationContext);
assertThat(size.getSizeImpact(), is(1));
assertThat(size.getMaximalSize(), is(1));
verify(methodVisitor).visitInsn(Opcodes.ACONST_NULL);
verifyNoMoreInteractions(methodVisitor);
verifyZeroInteractions(implementationContext);
}
@Test
@SuppressWarnings("unchecked")
public void testObjectProperties() throws Exception {
ObjectPropertyAssertion.of(MethodRebaseResolver.Resolution.ForRebasedConstructor.class).refine(new ObjectPropertyAssertion.Refinement<MethodDescription>() {
@Override
public void apply(MethodDescription mock) {
when(mock.getParameters()).thenReturn((ParameterList) new ParameterList.Empty<ParameterDescription>());
when(mock.getExceptionTypes()).thenReturn(new TypeList.Generic.Empty());
when(mock.getDeclaringType()).thenReturn(mock(TypeDescription.class));
TypeDescription.Generic returnType = mock(TypeDescription.Generic.class);
TypeDescription rawReturnType = mock(TypeDescription.class);
when(returnType.asErasure()).thenReturn(rawReturnType);
when(mock.getReturnType()).thenReturn(returnType);
when(mock.getInternalName()).thenReturn(FOO + System.identityHashCode(mock));
}
}).refine(new ObjectPropertyAssertion.Refinement<TypeDescription>() {
@Override
public void apply(TypeDescription mock) {
when(mock.getDescriptor()).thenReturn(FOO + System.identityHashCode(mock));
when(mock.asErasure()).thenReturn(mock);
when(mock.getStackSize()).thenReturn(StackSize.ZERO);
}
}).apply();
}
}