jaroslav@26: /**
jaroslav@106:  * Back 2 Browser Bytecode Translator
jaroslav@106:  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
jaroslav@26:  *
jaroslav@26:  * This program is free software: you can redistribute it and/or modify
jaroslav@26:  * it under the terms of the GNU General Public License as published by
jaroslav@26:  * the Free Software Foundation, version 2 of the License.
jaroslav@26:  *
jaroslav@26:  * This program is distributed in the hope that it will be useful,
jaroslav@26:  * but WITHOUT ANY WARRANTY; without even the implied warranty of
jaroslav@26:  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
jaroslav@26:  * GNU General Public License for more details.
jaroslav@26:  *
jaroslav@26:  * You should have received a copy of the GNU General Public License
jaroslav@26:  * along with this program. Look for COPYING file in the top folder.
jaroslav@26:  * If not, see http://opensource.org/licenses/GPL-2.0.
jaroslav@26:  */
jaroslav@25: package org.apidesign.bck2brwsr.htmlpage;
jaroslav@25: 
jaroslav@25: import java.io.IOException;
jaroslav@25: import java.io.InputStream;
jaroslav@100: import java.lang.reflect.Method;
jaroslav@25: import java.util.Set;
jaroslav@100: import javax.script.Invocable;
jaroslav@100: import javax.script.ScriptEngine;
jaroslav@100: import javax.script.ScriptEngineManager;
jaroslav@100: import javax.script.ScriptException;
jaroslav@25: import org.testng.annotations.Test;
jaroslav@25: import static org.testng.Assert.*;
jaroslav@25: 
jaroslav@25: public class ProcessPageTest {
jaroslav@25:     
jaroslav@25:     
jaroslav@25:     @Test public void findsThreeIds() throws IOException {
jaroslav@100:         InputStream is = ProcessPageTest.class.getResourceAsStream("TestPage.html");
jaroslav@25:         assertNotNull(is, "Sample HTML page found");
jaroslav@25:         ProcessPage res = ProcessPage.readPage(is);
jaroslav@25:         final Set<String> ids = res.ids();
jaroslav@25:         assertEquals(ids.size(), 3, "Three ids found: " + ids);
jaroslav@25:         
jaroslav@25:         assertEquals(res.tagNameForId("pg.title"), "title");
jaroslav@25:         assertEquals(res.tagNameForId("pg.button"), "button");
jaroslav@25:         assertEquals(res.tagNameForId("pg.text"), "input");
jaroslav@25:     }
jaroslav@26:     
jaroslav@100:     @Test public void testCompileAndRunPageController() throws Exception {
jaroslav@100:         StringBuilder sb = new StringBuilder();
jaroslav@100:         sb.append(
jaroslav@100:               "var window = new Object();\n"
jaroslav@100:             + "var doc = new Object();\n"
jaroslav@100:             + "doc.button = new Object();\n"
jaroslav@100:             + "doc.title = new Object();\n"
jaroslav@100:             + "doc.title.innerHTML = 'nothing';\n"
jaroslav@100:             + "doc.text = new Object();\n"
jaroslav@100:             + "doc.text.value = 'something';\n"
jaroslav@100:             + "doc.getElementById = function(id) {\n"
jaroslav@100:             + "    switch(id) {\n"
jaroslav@100:             + "      case 'pg.button': return doc.button;\n"
jaroslav@100:             + "      case 'pg.title': return doc.title;\n"
jaroslav@100:             + "      case 'pg.text': return doc.text;\n"
jaroslav@100:             + "    }\n"
jaroslav@100:             + "    throw id;\n"
jaroslav@100:             + "  }\n"
jaroslav@100:             + "\n"
jaroslav@100:             + "function clickAndCheck() {\n"
jaroslav@100:             + "  doc.button.onclick();\n"
jaroslav@100:             + "  return doc.title.innerHTML.toString();\n"
jaroslav@100:             + "};\n"
jaroslav@100:             + "\n"
jaroslav@100:             + "window.document = doc;\n"
jaroslav@100:         );
jaroslav@100:         Invocable i = compileClass(sb, "org/apidesign/bck2brwsr/htmlpage/PageController");
jaroslav@100: 
jaroslav@100:         Object ret = null;
jaroslav@100:         try {
jaroslav@100:             ret = i.invokeFunction("clickAndCheck");
jaroslav@100:         } catch (ScriptException ex) {
jaroslav@100:             fail("Execution failed in " + sb, ex);
jaroslav@100:         } catch (NoSuchMethodException ex) {
jaroslav@100:             fail("Cannot find method in " + sb, ex);
jaroslav@100:         }
jaroslav@104:         assertEquals(ret, "You want this window to be named something", "We expect that the JavaCode performs all the wiring");
jaroslav@26:     }
jaroslav@100: 
jaroslav@100:     static Invocable compileClass(StringBuilder sb, String... names) throws ScriptException, IOException {
jaroslav@100:         if (sb == null) {
jaroslav@100:             sb = new StringBuilder();
jaroslav@100:         }
jaroslav@100:         try {
jaroslav@100:             Method m;
jaroslav@100:             Class<?> genJS = Class.forName("org.apidesign.vm4brwsr.GenJS");
jaroslav@100:             m = genJS.getDeclaredMethod("compile", Appendable.class, String[].class);
jaroslav@100:             m.setAccessible(true);
jaroslav@100:             m.invoke(null, sb, names);
jaroslav@100:         } catch (Exception exception) {
jaroslav@100:             throw new IOException(exception);
jaroslav@100:         }
jaroslav@100:         ScriptEngineManager sem = new ScriptEngineManager();
jaroslav@100:         ScriptEngine js = sem.getEngineByExtension("js");
jaroslav@100:         try {
jaroslav@100:             Object res = js.eval(sb.toString());
jaroslav@100:             assertTrue(js instanceof Invocable, "It is invocable object: " + res);
jaroslav@100:             return (Invocable) js;
jaroslav@100:         } catch (ScriptException ex) {
jaroslav@100:             fail("Could not compile:\n" + sb, ex);
jaroslav@100:             return null;
jaroslav@100:         }
jaroslav@28:     }
jaroslav@25: }