package net.bytebuddy.implementation.bytecode.assign;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.implementation.Implementation;
import net.bytebuddy.implementation.bytecode.StackManipulation;
import net.bytebuddy.test.utility.MockitoRule;
import net.bytebuddy.test.utility.ObjectPropertyAssertion;
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 java.util.Random;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.mockito.Mockito.*;
public class TypeCastingTest {
private static final String FOO = "foo", BAR = "bar";
@Rule
public TestRule mockitoTest = new MockitoRule(this);
@Mock
private TypeDescription typeDescription;
@Mock
private MethodVisitor methodVisitor;
@Mock
private Implementation.Context implementationContext;
@Test
public void testCasting() throws Exception {
when(typeDescription.getInternalName()).thenReturn(FOO);
StackManipulation.Size size = new TypeCasting(typeDescription).apply(methodVisitor, implementationContext);
assertThat(size.getSizeImpact(), is(0));
assertThat(size.getMaximalSize(), is(0));
verify(methodVisitor).visitTypeInsn(Opcodes.CHECKCAST, FOO);
verifyNoMoreInteractions(methodVisitor);
verifyZeroInteractions(implementationContext);
}
@Test(expected = IllegalArgumentException.class)
public void testPrimitiveCastingThrowsException() throws Exception {
when(typeDescription.isPrimitive()).thenReturn(true);
TypeCasting.to(typeDescription);
}
@Test
public void testObjectProperties() throws Exception {
ObjectPropertyAssertion.of(TypeCasting.class).refine(new ObjectPropertyAssertion.Refinement<TypeDescription>() {
@Override
public void apply(TypeDescription mock) {
when((mock).getInternalName()).thenReturn(FOO + new Random().nextInt());
}
}).apply();
}
}