/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.
*/
import org.junit.Test;
// tag::jsr223_imports[]
import javax.script.ScriptEngine;
import javax.script.ScriptEngineManager;
import javax.script.ScriptException;
// end::jsr223_imports[]
import javax.script.Invocable;
import static org.junit.Assert.assertEquals;
public class JSR223SpecTest {
@Test
public void testSimpleExample() throws ScriptException {
// tag::jsr223_init[]
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("groovy");
// end::jsr223_init[]
// tag::jsr223_basic[]
Integer sum = (Integer) engine.eval("(1..10).sum()");
assertEquals(new Integer(55), sum);
// end::jsr223_basic[]
// tag::jsr223_variables[]
engine.put("first", "HELLO");
engine.put("second", "world");
String result = (String) engine.eval("first.toLowerCase() + ' ' + second.toUpperCase()");
assertEquals("hello WORLD", result);
// end::jsr223_variables[]
}
@Test
public void testInvocableFunction() throws ScriptException, NoSuchMethodException {
// tag::jsr223_invocable[]
ScriptEngineManager factory = new ScriptEngineManager();
ScriptEngine engine = factory.getEngineByName("groovy");
String fact = "def factorial(n) { n == 1 ? 1 : n * factorial(n - 1) }";
engine.eval(fact);
Invocable inv = (Invocable) engine;
Object[] params = {5};
Object result = inv.invokeFunction("factorial", params);
assertEquals(new Integer(120), result);
// end::jsr223_invocable[]
}
}