public void grantsAccessIfExpressionIsTrueDeniesIfFalse() {
WebExpressionVoter voter = new WebExpressionVoter();
Expression ex = mock(Expression.class);
WebExpressionConfigAttribute weca = new WebExpressionConfigAttribute(ex);
EvaluationContext ctx = mock(EvaluationContext.class);
SecurityExpressionHandler eh = mock(SecurityExpressionHandler.class);
FilterInvocation fi = new FilterInvocation("/path", "GET");
voter.setExpressionHandler(eh);
when(eh.createEvaluationContext(user, fi)).thenReturn(ctx);
when(ex.getValue(ctx, Boolean.class)).thenReturn(Boolean.TRUE).thenReturn(Boolean.FALSE);
ArrayList attributes = new ArrayList();
attributes.addAll(SecurityConfig.createList("A","B","C"));
attributes.add(weca);