Httpunit submit form with dropdown

[kennethmch]

I have a form like below.
<form name="testform">
<select name="testselect" onChange()="js">
<option value="1">one</option>
<option value="2">two</option>
</select>

which the javascript will invoke submit();

In my httpunit, when I do
form.setParameter("testselect","2");
it gives me a illegalParameterValueException.
com.meterware.httpunit.IllegalParameterValueException: May not set parameter 'testselect' to '2'. Value must be one of: {  }

Anyone know why is that? I am pretty sure I am at the right page and form. Also, when I call form.getOptions(), it returns me a empty String[].

Hope someone can give me a hint.
thanks for your time.

kenneth

[JFB]

It happens because of the javascript.  You can get around this by using the following code . . .

    protected WebRequest modifyParameterArray(WebRequest form,String name, String value,int arrayIndex){
        
        String[] currentValues = form.getParameterValues( name );
        java.util.Vector values = new java.util.Vector();
        
        if (arrayIndex != -1){
//         change all values to the one passed in
        }
        else{
//        change only the 1 value identified by the arrayIndex to the value passed in
        currentValues[arrayIndex] = value;
        
        for (int x = 0; x < currentValues.length; x++){
        values.add (currentValues[x]);
        
        }
        }
//        save value back to form
        form.setParameter( name, (String[])values.toArray( new String[0] ) ); 
        return form; 
        }

... bunch of code here . . .

            WebForm testForm = response.getFormWithName("testform");
            request = testForm.getRequest();
           
            request = modifyParameterArray(request,"search_type","address",0);

... more code ...

The modifyParameterArray can be called as many times for as many values as is required.

Hopefully this will bypass this problem . . .

BigFred