JvstTest test case.

git-svn-id: http://anonsvn.jboss.org/repos/javassist/trunk@589 30ef5769-5b8d-40dd-aea6-55b5d6557bb3

1 files changed, 228 insertions, 0 deletions

diff --git a/src/test/javassist/bytecode/InsertGap0.java b/src/test/javassist/bytecode/InsertGap0.java
new file mode 100644
index 00000000..31fec3aa
--- /dev/null
+++ b/src/test/javassist/bytecode/InsertGap0.java
@@ -0,0 +1,228 @@
+package javassist.bytecode;
+
+import javassist.*;
+
+final class Gap0Example {
+    public static int counter = 1;
+
+    public Gap0Example() {}
+
+    public int run(int x) { return counter; }
+
+    private static final int INTVALUE = 100000;
+    private int i1, i2, i3, i4, i5, i6, i7, i8, i9, i10;
+    private int i11, i12, i13, i14, i15, i16, i17, i18, i19, i20;
+    private int i21, i22, i23, i24, i25, i26, i27, i28, i29, i30;
+    private int i31, i32, i33, i34, i35, i36, i37, i38, i39, i40;
+
+    public void doit() {
+
+        i1 = INTVALUE;
+        i2 = INTVALUE;
+        i3 = INTVALUE;
+        i4 = INTVALUE;
+        i5 = INTVALUE;
+        i6 = INTVALUE;
+        i7 = INTVALUE;
+        i8 = INTVALUE;
+        i9 = INTVALUE;
+        i10 = INTVALUE;
+        i11 = INTVALUE;
+        i12 = INTVALUE;
+        i13 = INTVALUE;
+        i14 = INTVALUE;
+        i15 = INTVALUE;
+        i16 = INTVALUE;
+        i17 = INTVALUE;
+        i18 = INTVALUE;
+        i19 = INTVALUE;
+        i20 = INTVALUE;
+        i21 = INTVALUE;
+        i22 = INTVALUE;
+        i23 = INTVALUE;
+        i24 = INTVALUE;
+        i25 = INTVALUE;
+        i26 = INTVALUE;
+        i27 = INTVALUE;
+        i28 = INTVALUE;
+        i29 = INTVALUE;
+        i20 = INTVALUE;
+        i21 = INTVALUE;
+        i22 = INTVALUE;
+        i23 = INTVALUE;
+        i24 = INTVALUE;
+        i25 = INTVALUE;
+        i26 = INTVALUE;
+        i27 = INTVALUE;
+        i28 = INTVALUE;
+        i29 = INTVALUE;
+        i30 = INTVALUE;
+        i31 = INTVALUE;
+        i32 = INTVALUE;
+        i33 = INTVALUE;
+        i34 = INTVALUE;
+        i35 = INTVALUE;
+        i36 = INTVALUE;
+        i37 = INTVALUE;
+        i38 = INTVALUE;
+        i39 = INTVALUE;
+        i40 = INTVALUE;
+    }
+}
+
+final class Gap0Example2 {
+    public static int counter = 1;
+
+    public Gap0Example2() {}
+
+    public int run(int x) { return counter; }
+
+    private static final int INTVALUE = 100000;
+    private int i1, i2, i3, i4, i5, i6, i7, i8, i9, i10;
+    private int i11, i12, i13, i14, i15, i16, i17, i18, i19, i20;
+    private int i21, i22, i23, i24, i25, i26, i27, i28, i29, i30;
+    private int i31, i32, i33, i34, i35, i36, i37, i38, i39, i40;
+
+    public int run2(int x) {
+        switch (x) {
+        case 0:
+        i1 = INTVALUE;
+        i2 = INTVALUE;
+        i3 = INTVALUE;
+        i4 = INTVALUE;
+        i5 = INTVALUE;
+        i6 = INTVALUE;
+        i7 = INTVALUE;
+        break;
+        case 100:
+        i8 = INTVALUE;
+        i9 = INTVALUE;
+        i10 = INTVALUE;
+        i11 = INTVALUE;
+        i12 = INTVALUE;
+        i13 = INTVALUE;
+        i14 = INTVALUE;
+        break;
+        default:
+        i15 = INTVALUE;
+        i16 = INTVALUE;
+        i17 = INTVALUE;
+        if (x > 0) {
+        i18 = INTVALUE;
+        i19 = INTVALUE;
+        i20 = INTVALUE;
+        i21 = INTVALUE;
+        i22 = INTVALUE;
+        i23 = INTVALUE;
+        i24 = INTVALUE;
+        }
+        i25 = INTVALUE;
+        i26 = INTVALUE;
+        i27 = INTVALUE;
+        i28 = INTVALUE;
+        i29 = INTVALUE;
+        i20 = INTVALUE;
+        i21 = INTVALUE;
+        i22 = INTVALUE;
+        i23 = INTVALUE;
+        i24 = INTVALUE;
+        i25 = INTVALUE;
+        i26 = INTVALUE;
+        i27 = INTVALUE;
+        i28 = INTVALUE;
+        i29 = INTVALUE;
+        i30 = INTVALUE;
+        i31 = INTVALUE;
+        i32 = INTVALUE;
+        i33 = INTVALUE;
+        i34 = INTVALUE;
+        i35 = INTVALUE;
+        i36 = INTVALUE;
+        i37 = INTVALUE;
+        i38 = INTVALUE;
+        i39 = INTVALUE;
+        i40 = INTVALUE;
+        break;
+        }
+        switch (x) {
+        case 0:
+            break;
+        default:
+            return x + 1;
+        }
+
+        return x;
+    }
+}
+
+public final class InsertGap0 extends JvstTestRoot {
+    public InsertGap0(String name) {
+        super(name);
+    }
+
+    public void testExample() throws Throwable {
+        ClassPool pool = ClassPool.getDefault();
+        CtClass cc = pool.get("javassist.bytecode.Gap0Example");
+        CtMethod[] ms = cc.getDeclaredMethods();
+        for (int i = 0; i < ms.length; i++) {
+            addMethod(ms[i], cc);
+        }
+
+        cc.setModifiers(Modifier.PUBLIC | Modifier.FINAL);
+        cc.addField(new CtField(CtClass.intType, "i", cc), "++counter");
+        boolean p = cc.stopPruning(true);
+        cc.writeFile();
+        Class c = cc.toClass();
+        cc.stopPruning(p);
+
+        Object obj = c.newInstance();
+        assertEquals(2, invoke(obj, "run", 0));
+    }
+
+    public void testExample2() throws Throwable {
+        ClassPool pool = ClassPool.getDefault();
+        CtClass cc = pool.get("javassist.bytecode.Gap0Example2");
+        CtMethod[] ms = cc.getDeclaredMethods();
+        for (int i = 0; i < ms.length; i++) {
+            addMethod(ms[i], cc);
+        }
+
+        cc.setModifiers(Modifier.PUBLIC | Modifier.FINAL);
+        cc.addField(new CtField(CtClass.intType, "i", cc), "++counter");
+        boolean p = cc.stopPruning(true);
+        cc.writeFile();
+        Class c = cc.toClass();
+        cc.stopPruning(p);
+
+        Object obj = c.newInstance();
+        assertEquals(0, invoke(obj, "run2", 0));
+    }
+
+    private void addMethod(CtMethod method, CtClass target)
+        throws CannotCompileException, NotFoundException {
+
+        CtClass[] ts = method.getParameterTypes();
+        CtClass[] newts = new CtClass[ts.length + 1];
+        for (int i = 0; i < ts.length; i++) {
+            newts[i] = ts[i];
+        }
+        ClassPool p = method.getDeclaringClass().getClassPool();
+        newts[ts.length] = target;
+
+        CtMethod m =
+            CtNewMethod.make(
+                method.getModifiers(),
+                method.getReturnType(),
+                method.getName(),
+                newts,
+                method.getExceptionTypes(),
+                null,
+                method.getDeclaringClass());
+
+        m.setBody(method, null);
+
+        CodeAttribute ca = m.getMethodInfo().getCodeAttribute();
+        ca.setMaxLocals(ca.getMaxLocals() + 1);
+        target.addMethod(m);
+    }
+}