/*
* Copyright 2002-2012 the original author or authors.
*
* 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 org.springframework.expression.spel;
import org.junit.Before;
import org.junit.Test;
import org.springframework.expression.Expression;
import org.springframework.expression.ExpressionParser;
import org.springframework.expression.spel.ast.MethodReference;
import org.springframework.expression.spel.standard.SpelExpressionParser;
import org.springframework.expression.spel.support.StandardEvaluationContext;
import static org.junit.Assert.*;
/**
* Test for caching in {@link MethodReference} (SPR-10657).
*
* @author Oliver Becker
*/
public class CachedMethodExecutorTests {
private final ExpressionParser parser = new SpelExpressionParser();
private StandardEvaluationContext context;
@Before
public void setUp() throws Exception {
this.context = new StandardEvaluationContext(new RootObject());
}
@Test
public void testCachedExecutionForParameters() throws Exception {
Expression expression = this.parser.parseExpression("echo(#var)");
assertMethodExecution(expression, 42, "int: 42");
assertMethodExecution(expression, 42, "int: 42");
assertMethodExecution(expression, "Deep Thought", "String: Deep Thought");
assertMethodExecution(expression, 42, "int: 42");
}
@Test
public void testCachedExecutionForTarget() throws Exception {
Expression expression = this.parser.parseExpression("#var.echo(42)");
assertMethodExecution(expression, new RootObject(), "int: 42");
assertMethodExecution(expression, new RootObject(), "int: 42");
assertMethodExecution(expression, new BaseObject(), "String: 42");
assertMethodExecution(expression, new RootObject(), "int: 42");
}
private void assertMethodExecution(Expression expression, Object var, String expected) {
this.context.setVariable("var", var);
assertEquals(expected, expression.getValue(this.context));
}
public static class BaseObject {
public String echo(String value) {
return "String: " + value;
}
}
public static class RootObject extends BaseObject {
public String echo(int value) {
return "int: " + value;
}
}
}