asm4/test/conform/org/objectweb/asm/tree/ClassNodeUnitTest.java

/***
 * ASM tests
 * Copyright (c) 2000-2011 INRIA, France Telecom
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
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 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the copyright holders nor the names of its
 *    contributors may be used to endorse or promote products derived from
 *    this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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package org.objectweb.asm.tree;

import junit.framework.TestCase;

import org.objectweb.asm.Handle;
import org.objectweb.asm.Label;
import org.objectweb.asm.Opcodes;

/**
 * ClassNode unit tests.
 * 
 * @author Eric Bruneton
 */
public class ClassNodeUnitTest extends TestCase implements Opcodes {

    public void testFrameNode() {
        FrameNode fn = new FrameNode(F_SAME, 0, null, 0, null);
        assertEquals(AbstractInsnNode.FRAME, fn.getType());
    }

    public void testInsnNode() {
        InsnNode in = new InsnNode(NOP);
        assertEquals(in.getOpcode(), NOP);
        assertEquals(AbstractInsnNode.INSN, in.getType());
    }

    public void testIntInsnNode() {
        IntInsnNode iin = new IntInsnNode(BIPUSH, 0);
        iin.setOpcode(SIPUSH);
        assertEquals(SIPUSH, iin.getOpcode());
        assertEquals(AbstractInsnNode.INT_INSN, iin.getType());
    }

    public void testVarInsnNode() {
        VarInsnNode vn = new VarInsnNode(ALOAD, 0);
        vn.setOpcode(ASTORE);
        assertEquals(ASTORE, vn.getOpcode());
        assertEquals(AbstractInsnNode.VAR_INSN, vn.getType());
    }

    public void testTypeInsnNode() {
        TypeInsnNode tin = new TypeInsnNode(NEW, "java/lang/Object");
        tin.setOpcode(CHECKCAST);
        assertEquals(CHECKCAST, tin.getOpcode());
        assertEquals(AbstractInsnNode.TYPE_INSN, tin.getType());
    }

    public void testFieldInsnNode() {
        FieldInsnNode fn = new FieldInsnNode(GETSTATIC, "owner", "name", "I");
        fn.setOpcode(PUTSTATIC);
        assertEquals(PUTSTATIC, fn.getOpcode());
        assertEquals(AbstractInsnNode.FIELD_INSN, fn.getType());
    }

    public void testMethodInsnNode() {
        MethodInsnNode mn = new MethodInsnNode(INVOKESTATIC, "owner", "name",
                "I");
        mn.setOpcode(INVOKESPECIAL);
        assertEquals(INVOKESPECIAL, mn.getOpcode());
        assertEquals(AbstractInsnNode.METHOD_INSN, mn.getType());
    }

    public void testInvokeDynamicInsnNode() {
        Handle bsm = new Handle(Opcodes.H_INVOKESTATIC, "owner", "name", "()V");
        InvokeDynamicInsnNode mn = new InvokeDynamicInsnNode("name", "()V",
                bsm, new Object[0]);

        assertEquals(INVOKEDYNAMIC, mn.getOpcode());
        assertEquals(AbstractInsnNode.INVOKE_DYNAMIC_INSN, mn.getType());
    }

    public void testJumpInsnNode() {
        JumpInsnNode jn = new JumpInsnNode(GOTO, new LabelNode());
        jn.setOpcode(IFEQ);
        assertEquals(IFEQ, jn.getOpcode());
        assertEquals(AbstractInsnNode.JUMP_INSN, jn.getType());
    }

    public void testLabelNode() {
        LabelNode ln = new LabelNode();
        assertEquals(AbstractInsnNode.LABEL, ln.getType());
        assertTrue(ln.getLabel() != null);
        // dummy assignment to instruct FindBugs that Label.info can
        // reference other objects than LabelNode instances
        ln.getLabel().info = new Object();
    }

    public void testIincInsnNode() {
        IincInsnNode iincn = new IincInsnNode(1, 1);
        assertEquals(AbstractInsnNode.IINC_INSN, iincn.getType());
    }

    public void testLdcInsnNode() {
        LdcInsnNode ldcn = new LdcInsnNode("s");
        assertEquals(AbstractInsnNode.LDC_INSN, ldcn.getType());
    }

    public void testLookupSwitchInsnNode() {
        LookupSwitchInsnNode lsn = new LookupSwitchInsnNode(null, null, null);
        assertEquals(AbstractInsnNode.LOOKUPSWITCH_INSN, lsn.getType());
    }

    public void testTableSwitchInsnNode() {
        TableSwitchInsnNode tsn = new TableSwitchInsnNode(0, 1, null,
                (LabelNode[]) null);
        assertEquals(AbstractInsnNode.TABLESWITCH_INSN, tsn.getType());
    }

    public void testMultiANewArrayInsnNode() {
        MultiANewArrayInsnNode manan = new MultiANewArrayInsnNode("[[I", 2);
        assertEquals(AbstractInsnNode.MULTIANEWARRAY_INSN, manan.getType());
    }

    public void testCloneMethod() {
        MethodNode n = new MethodNode();
        Label l0 = new Label();
        Label l1 = new Label();
        n.visitCode();
        n.visitLabel(l0);
        n.visitInsn(Opcodes.NOP);
        n.visitLabel(l1);
        n.visitEnd();
        MethodNode n1 = new MethodNode();
        n.accept(n1);
        n.accept(n1);
    }
}