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/**
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* Back 2 Browser Bytecode Translator
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* Copyright (C) 2012-2015 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, version 2 of the License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. Look for COPYING file in the top folder.
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* If not, see http://opensource.org/licenses/GPL-2.0.
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*/
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package org.apidesign.vm4brwsr;
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import javax.script.ScriptContext;
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import javax.script.ScriptEngine;
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import javax.script.ScriptException;
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import org.testng.annotations.BeforeClass;
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import static org.testng.Assert.*;
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import org.testng.annotations.AfterClass;
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import org.testng.annotations.Test;
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/** Implements loading class by class.
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*
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* @author Jaroslav Tulach <jtulach@netbeans.org>
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*/
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public class VMLazyTest {
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private static TestVM code;
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@BeforeClass
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public static void compileTheCode() throws Exception {
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StringBuilder sb = new StringBuilder();
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sb.append("\nvar data = {};");
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sb.append("\nfunction test(clazz, method) {");
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sb.append("\n if (!data.bck2brwsr) data.bck2brwsr = bck2brwsr(function(name) { return loader.get(name); });");
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sb.append("\n var c = data.bck2brwsr.loadClass(clazz);");
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sb.append("\n return c[method]();");
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sb.append("\n}");
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sb.append("\nfunction checkKO() {");
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sb.append("\n return ko !== null;");
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sb.append("\n}");
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ScriptEngine[] arr = { null };
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code = TestVM.compileClass(sb, arr,
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new String[]{"org/apidesign/vm4brwsr/VM", "org/apidesign/vm4brwsr/StaticMethod"}
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);
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arr[0].getContext().setAttribute("loader", new BytesLoader(), ScriptContext.ENGINE_SCOPE);
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}
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@AfterClass
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public static void releaseTheCode() {
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code = null;
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}
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@Test public void invokeStaticMethod() throws Exception {
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assertExec("Trying to get -1", "test", Double.valueOf(-1),
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StaticMethod.class.getName(), "minusOne__I"
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);
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}
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@Test public void loadDependantClass() throws Exception {
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assertExec("Expecting zero", "test", Double.valueOf(0),
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InstanceSub.class.getName(), "recallDbl__D"
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);
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}
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@Test public void loadClassWithAssociatedScript() throws Exception {
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assertExec("ko is defined", "test", true,
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Script.class.getName(), "checkNotNull__Z"
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);
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Object res = code.invokeFunction("checkKO");
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assertEquals(res, true, "KO is defined on a global level");
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}
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private static void assertExec(String msg, String methodName, Object expRes, Object... args) throws Exception {
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Object ret = null;
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try {
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ret = code.invokeFunction(methodName, args);
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} catch (ScriptException ex) {
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fail("Execution failed in\n" + code.toString(), ex);
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} catch (NoSuchMethodException ex) {
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fail("Cannot find method in\n" + code.toString(), ex);
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}
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if (ret == null && expRes == null) {
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return;
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}
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if (expRes instanceof Double && ret instanceof Number) {
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ret = ((Number)ret).doubleValue();
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}
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if (expRes.equals(ret)) {
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return;
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}
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assertEquals(ret, expRes, msg + "was: " + ret + "\n" + code.toString());
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}
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}
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