/*
 * 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.    
 */
package org.apache.tuscany.container.javascript.rhino;

import java.io.IOException;

import junit.framework.TestCase;

import org.apache.axiom.om.OMElement;
import org.apache.xmlbeans.XmlException;
import org.apache.xmlbeans.XmlObject;

/**
 * Tests for the RhinoFunctionInvoker
 */
public class RhinoFunctionInvokerTestCase extends TestCase {

    public RhinoFunctionInvokerTestCase() {
    }

    protected void setUp() throws Exception {
        super.setUp();
    }

    public void testNoArgsInvoke() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getPetra() {return 'petra';}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getPetra");
        assertNotNull(invoker);
        assertEquals("petra", invoker.invoke(null));
    }

    public void testOneArgInvoke() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getS(s) {return s;}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getS");
        assertNotNull(invoker);
        assertEquals("petra", invoker.invoke(new Object[] { "petra" }));
    }

    public void testMultiArgsInvoke() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function concat(x, y) {return x + y}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("concat");
        assertNotNull(invoker);
        assertEquals("petrasue", invoker.invoke(new Object[] { "petra", "sue" }));
    }

    public void testNoResponseInvoke() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getNull() {}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getNull");
        assertNotNull(invoker);
        assertEquals(null, invoker.invoke(new Object[0]));
    }

    public void testNullResponseInvoke() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getNull() {return null;}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getNull");
        assertNotNull(invoker);
        assertEquals(null, invoker.invoke(new Object[0]));
    }

    public void testResponseTypeDefaultString() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getTrue() {return true;}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getTrue");
        assertNotNull(invoker);
        Object o = invoker.invoke(new Object[0]);
        assertTrue(o instanceof String);
        assertEquals("true", o);
    }

    public void testResponseTypeBoolean() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getTrue() {return true;}");
        //rhinoScript.setResponseClass("getTrue", Boolean.class);
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getTrue", Boolean.class);
        assertNotNull(invoker);
        assertTrue((Boolean) invoker.invoke(new Object[0]));
    }

    public void testResponseTypeStringArray() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getAs() {var as = new Array(1);as[0]='petra';return as;}");
        //rhinoScript.setResponseClass("getAs", new String[0].getClass());
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getAs", new String[0].getClass());
        assertNotNull(invoker);
        Object o = invoker.invoke(new Object[0]);
        assertNotNull(o);
        assertTrue(o.getClass().isArray());
        assertEquals("petra", ((Object[]) o)[0]);
    }

    public void testResponseTypeBooleanArray() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getBs() {var bs = new Array(1);bs[0]=true;return bs;}");
        rhinoScript.setResponseClass("getBs", new Boolean[0].getClass());
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getBs", new Boolean[0].getClass());
        assertNotNull(invoker);
        Object o = invoker.invoke(new Object[0]);
        assertNotNull(o);
        assertTrue(o.getClass().isArray());
        assertTrue(((Boolean[]) o)[0]);
    }

    public void testRequestCustomType() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getFooS(foo) {return foo.getS();}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getFooS");
        assertNotNull(invoker);

        Foo foo = new Foo();
        foo.setS("petra");
        Object o = invoker.invoke(new Object[] { foo });
        assertEquals(foo.getS(), o);
    }

    public void testResponseCustomType() {
        RhinoScript rhinoScript = new RhinoScript("foo",
                "importClass(Packages.org.apache.tuscany.container.javascript.rhino.Foo);function getFoo(s) {var foo = new Foo(); foo.setS(s);return foo;}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getFoo");
        assertNotNull(invoker);

        Object o = invoker.invoke(new Object[] { "petra" });
        assertNotNull(o);
        assertEquals("petra", ((Foo) o).getS());
    }

    public void testXMLRequest() throws XmlException, IOException {
        RhinoScript rhinoScript = new RhinoScript("foo", "function isXML(x) {return 'xml' == (typeof x);}");
        //rhinoScript.setResponseClass("isXML", Boolean.class);
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("isXML", Boolean.class);
        assertNotNull(invoker);

        Object xml = XmlObject.Factory.parse("<a><b/></a>");
        assertTrue((Boolean) invoker.invoke(new Object[] { xml }));

        Object notXML = "notXML";
        assertFalse((Boolean) invoker.invoke(new Object[] { notXML }));
    }

    public void testXMLResponse() {
        RhinoScript rhinoScript = new RhinoScript("foo", "function getXML(s) {return <a> { s } </a>;}");
        RhinoScriptInstance instance = rhinoScript.createRhinoScriptInstance();
        RhinoFunctionInvoker invoker = instance.createRhinoFunctionInvoker("getXML");
        assertNotNull(invoker);

        Object xml = invoker.invoke(new Object[] { "petra" });
        assertNotNull(xml);
        assertTrue(xml instanceof OMElement);
        assertEquals("<a>petra</a>", ((OMElement) xml).toString());
    }

}