Github user lukaszlenart commented on the pull request:
https://github.com/apache/struts/pull/35#issuecomment-78242017
So you can use a `StubValueContext` like this one
```java
public class StubValueStack implements ValueStack {
Map<String, Object> ctx = new HashMap<String, Object>();
CompoundRoot root = new CompoundRoot();
public Map<String, Object> getContext() {
return ctx;
}
public void setDefaultType(Class defaultType) {
}
public void setExprOverrides(Map<Object, Object> overrides) {
}
public Map<Object, Object> getExprOverrides() {
return null;
}
public CompoundRoot getRoot() {
return root;
}
public void setValue(String expr, Object value) {
ctx.put(expr, value);
}
public void setParameter(String expr, Object value) {
throw new UnsupportedOperationException("not implemented");
}
public void setValue(String expr, Object value, boolean
throwExceptionOnFailure) {
ctx.put(expr, value);
}
public String findString(String expr) {
return (String) ctx.get(expr);
}
public String findString(String expr, boolean throwExceptionOnFailure) {
return findString(expr, false);
}
public Object findValue(String expr) {
return findValue(expr, false);
}
public Object findValue(String expr, boolean throwExceptionOnFailure) {
return ctx.get(expr);
}
public Object findValue(String expr, Class asType) {
return findValue(expr, asType, false);
}
public Object findValue(String expr, Class asType, boolean
throwExceptionOnFailure) {
return ctx.get(expr);
}
public Object peek() {
return root.peek();
}
public Object pop() {
return root.pop();
}
public void push(Object o) {
root.push(o);
}
public void set(String key, Object o) {
ctx.put(key, o);
}
public int size() {
return root.size();
}
}
```
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