1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/ko/archetype/src/main/resources/archetype-resources/src/test/java/JsInteractionTest.java	Tue Feb 04 09:32:27 2014 +0100
     1.3 @@ -0,0 +1,103 @@
     1.4 +package ${package};
     1.5 +
     1.6 +import java.io.Closeable;
     1.7 +import java.io.Reader;
     1.8 +import java.net.URL;
     1.9 +import java.util.ArrayList;
    1.10 +import java.util.List;
    1.11 +import javax.script.Invocable;
    1.12 +import javax.script.ScriptEngine;
    1.13 +import javax.script.ScriptEngineManager;
    1.14 +import javax.script.ScriptException;
    1.15 +import org.apidesign.html.boot.spi.Fn;
    1.16 +import static org.testng.Assert.assertEquals;
    1.17 +import org.testng.annotations.AfterMethod;
    1.18 +import org.testng.annotations.BeforeMethod;
    1.19 +import org.testng.annotations.Test;
    1.20 +
    1.21 +/** Tests for behavior of @JavaScriptBody methods. Set your JavaScript 
    1.22 + * environment up (for example define <code>alert</code> or use some
    1.23 + * emulation library like <em>env.js</em>), register script presenter 
    1.24 + * and then you can call methods that deal with JavaScript in your tests.
    1.25 + */
    1.26 +public class JsInteractionTest {
    1.27 +    private Closeable jsEngine;
    1.28 +    @BeforeMethod public void initializeJSEngine() throws Exception {
    1.29 +        jsEngine = Fn.activate(new ScriptPresenter());
    1.30 +    }
    1.31 +    
    1.32 +    @AfterMethod public void shutdownJSEngine() throws Exception {
    1.33 +        jsEngine.close();
    1.34 +    }
    1.35 +    
    1.36 +    @Test public void testCallbackFromJavaScript() throws Exception {
    1.37 +        class R implements Runnable {
    1.38 +            int called;
    1.39 +
    1.40 +            @Override
    1.41 +            public void run() {
    1.42 +                called++;
    1.43 +            }
    1.44 +        }
    1.45 +        R callback = new R();
    1.46 +        
    1.47 +        DataModel.confirmByUser("Hello", callback);
    1.48 +        
    1.49 +        assertEquals(callback.called, 1, "One immediate callback");
    1.50 +    }
    1.51 +
    1.52 +    private static class ScriptPresenter implements Fn.Presenter {
    1.53 +        private final ScriptEngine eng;
    1.54 +        
    1.55 +        public ScriptPresenter() throws ScriptException {
    1.56 +            eng = new ScriptEngineManager().getEngineByName("javascript");
    1.57 +            eng.eval("function alert(msg) { Packages.java.lang.System.out.println(msg); };");
    1.58 +        }
    1.59 +
    1.60 +        @Override
    1.61 +        public Fn defineFn(String code, String... names) {
    1.62 +            StringBuilder sb = new StringBuilder();
    1.63 +            sb.append("(function() {");
    1.64 +            sb.append("  return function(");
    1.65 +            String sep = "";
    1.66 +            for (String n : names) {
    1.67 +                sb.append(sep).append(n);
    1.68 +                sep = ",";
    1.69 +            }
    1.70 +            sb.append(") {\n");
    1.71 +            sb.append(code);
    1.72 +            sb.append("};");
    1.73 +            sb.append("})()");
    1.74 +            
    1.75 +            final Object fn;
    1.76 +            try {
    1.77 +                fn = eng.eval(sb.toString());
    1.78 +            } catch (ScriptException ex) {
    1.79 +                throw new IllegalStateException(ex);
    1.80 +            }
    1.81 +            return new Fn(this) {
    1.82 +                @Override
    1.83 +                public Object invoke(Object thiz, Object... args) throws Exception {
    1.84 +                    List<Object> all = new ArrayList<Object>(args.length + 1);
    1.85 +                    all.add(thiz == null ? fn : thiz);
    1.86 +                    for (int i = 0; i < args.length; i++) {
    1.87 +                        all.add(args[i]);
    1.88 +                    }
    1.89 +                    Object ret = ((Invocable)eng).invokeMethod(fn, "call", all.toArray()); // NOI18N
    1.90 +                    return fn.equals(ret) ? null : thiz;
    1.91 +                }
    1.92 +            };
    1.93 +        }
    1.94 +
    1.95 +        @Override
    1.96 +        public void displayPage(URL page, Runnable onPageLoad) {
    1.97 +            // not really displaying anything
    1.98 +            onPageLoad.run();
    1.99 +        }
   1.100 +
   1.101 +        @Override
   1.102 +        public void loadScript(Reader code) throws Exception {
   1.103 +            eng.eval(code);
   1.104 +        }
   1.105 +    }
   1.106 +}