--- /dev/null
+/*
+ * Copyright (C) 2014, United States Government, as represented by the
+ * Administrator of the National Aeronautics and Space Administration.
+ * All rights reserved.
+ *
+ * The Java Pathfinder core (jpf-core) platform is licensed under the
+ * Apache License, Version 2.0 (the "License"); you may not use this file except
+ * in compliance with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0.
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package gov.nasa.jpf.vm;
+
+import gov.nasa.jpf.jvm.JVMStackFrame;
+import gov.nasa.jpf.util.test.TestJPF;
+import java.lang.reflect.Modifier;
+
+import org.junit.Test;
+
+/**
+ * unit test for StackFrame operations
+ */
+public class StackFrameTest extends TestJPF {
+
+ @Test
+ public void testReplaceLocalAttr() {
+
+ MethodInfo mInfo = new MethodInfo("[methodName]", "()V", Modifier.PUBLIC, 2, 10);
+ JVMStackFrame frame = new JVMStackFrame(mInfo);
+ // Initialize local values and the stack frame
+ frame.push(1);
+
+ String obj1 = "Attribute1";
+ Class<?> attrType = obj1.getClass();
+ frame.addLocalAttr(0, obj1);
+
+ final Object oldAttr = frame.getLocalAttr(0, attrType);
+ assertTrue(oldAttr != null && oldAttr == obj1);
+
+ String obj2 = "Attribute2";
+ frame.replaceLocalAttr(0, oldAttr, obj2);
+
+ final Object newAttr = frame.getLocalAttr(0, attrType);
+ assertTrue(newAttr != null && newAttr == obj2);
+ }
+
+ public static void main(String[] args) {
+ runTestsOfThisClass(null);
+ }
+}