/*
* Copyright 2003-2014 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.
*/
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[]
}
}