public void renderTemplate() throws Exception {
registerAndRefreshContext();
VelocityConfigurer velocity = this.context.getBean(VelocityConfigurer.class);
StringWriter writer = new StringWriter();
Template template = velocity.getVelocityEngine().getTemplate("message.vm");
template.process();
VelocityContext velocityContext = new VelocityContext();
velocityContext.put("greeting", "Hello World");
template.merge(velocityContext, writer);
assertThat(writer.toString(), containsString("Hello World"));
}