content: /*
   * Copyright 1999-2101 Alibaba Group.
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *      http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.simpleEL.bvt;
  
  import java.util.HashMap;
  import java.util.Map;
  
  import junit.framework.Assert;
  import junit.framework.TestCase;
  
  import com.alibaba.simpleEL.eval.DefaultExpressEvalService;
  import com.alibaba.simpleEL.preprocess.TemplatePreProcessor;
  import com.alibaba.simpleEL.preprocess.VariantResolver;
  
  public class ExpressEvalServiceTest extends TestCase {
  	public void test_0() throws Exception {
  		DefaultExpressEvalService service = new DefaultExpressEvalService();
  		
  		TemplatePreProcessor preprocessor = (TemplatePreProcessor) service.getPreprocessor();
          preprocessor.setVariantResolver(new VariantResolver() {
              @Override
              public String resolve(String variant) {
                  return "_int(ctx.get(\"" + variant + "\"))";
              }
  
  			@Override
  			public Class<?> getType(String variant) {
  				// TODO Auto-generated method stub
  				return null;
  			}
              
          });
  		
  		Map<String, Object> context = new HashMap<String, Object>();
  		context.put("a", 3);
  		context.put("b", 4);
  		
  		Assert.assertEquals(7, service.eval(context, "@a + @b"));
  	}
  }
  