package net.bytebuddy.implementation.bytecode.collection;
import net.bytebuddy.description.type.TypeDescription;
import net.bytebuddy.implementation.Implementation;
import net.bytebuddy.implementation.bytecode.StackManipulation;
import net.bytebuddy.test.utility.MockitoRule;
import org.junit.Rule;
import org.junit.Test;
import org.junit.rules.TestRule;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.mockito.Mock;
import org.objectweb.asm.MethodVisitor;
import org.objectweb.asm.Opcodes;
import java.util.Arrays;
import java.util.Collection;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.MatcherAssert.assertThat;
import static org.mockito.Mockito.*;
@RunWith(Parameterized.class)
public class ArrayAccessTest {
private final TypeDescription typeDescription;
private final int loadOpcode, storeOpcode;
@Rule
public TestRule mockitoRule = new MockitoRule(this);
@Mock
private MethodVisitor methodVisitor;
@Mock
private Implementation.Context implementationContext;
public ArrayAccessTest(Class<?> type, int loadOpcode, int storeOpcode) {
typeDescription = new TypeDescription.ForLoadedType(type);
this.loadOpcode = loadOpcode;
this.storeOpcode = storeOpcode;
}
@Parameterized.Parameters
public static Collection<Object[]> data() {
return Arrays.asList(new Object[][]{
{boolean.class, Opcodes.BALOAD, Opcodes.BASTORE},
{byte.class, Opcodes.BALOAD, Opcodes.BASTORE},
{short.class, Opcodes.SALOAD, Opcodes.SASTORE},
{char.class, Opcodes.CALOAD, Opcodes.CASTORE},
{int.class, Opcodes.IALOAD, Opcodes.IASTORE},
{long.class, Opcodes.LALOAD, Opcodes.LASTORE},
{float.class, Opcodes.FALOAD, Opcodes.FASTORE},
{double.class, Opcodes.DALOAD, Opcodes.DASTORE},
{Object.class, Opcodes.AALOAD, Opcodes.AASTORE},
});
}
@Test
public void testLoad() throws Exception {
ArrayAccess arrayAccess = ArrayAccess.of(typeDescription);
assertThat(arrayAccess.load().isValid(), is(true));
StackManipulation.Size size = arrayAccess.load().apply(methodVisitor, implementationContext);
assertThat(size.getSizeImpact(), is(typeDescription.getStackSize().getSize() - 2));
assertThat(size.getMaximalSize(), is(typeDescription.getStackSize().getSize()));
verify(methodVisitor).visitInsn(loadOpcode);
verifyNoMoreInteractions(methodVisitor);
verifyZeroInteractions(implementationContext);
}
@Test
public void testStore() throws Exception {
ArrayAccess arrayAccess = ArrayAccess.of(typeDescription);
assertThat(arrayAccess.store().isValid(), is(true));
StackManipulation.Size size = arrayAccess.store().apply(methodVisitor, implementationContext);
assertThat(size.getSizeImpact(), is(-(typeDescription.getStackSize().getSize() + 2)));
assertThat(size.getMaximalSize(), is(0));
verify(methodVisitor).visitInsn(storeOpcode);
verifyNoMoreInteractions(methodVisitor);
verifyZeroInteractions(implementationContext);
}
}