CountingMockExpressionEvaluator eval = (CountingMockExpressionEvaluator) ctx.getExpressionEvaluator();
ctx.setAttribute("bla", "blie");
ctx.setAttribute("blo", "blue");
MockServletContext sc = (MockServletContext) ctx.getServletContext();
sc.addInitParameter(ExpressionEvaluationUtils.EXPRESSION_CACHE_CONTEXT_PARAM, "true");
assertEquals("blie", ExpressionEvaluationUtils.evaluate("test", "${bla}", String.class, ctx));
assertEquals(1, eval.parseExpressionCount);
assertEquals("blue", ExpressionEvaluationUtils.evaluate("test", "${blo}", String.class, ctx));