diff -r 5866e89ef568 -r d382dacfd73f rt/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/Bck2BrwsrCase.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rt/vmtest/src/main/java/org/apidesign/bck2brwsr/vmtest/impl/Bck2BrwsrCase.java	Tue Feb 26 16:54:16 2013 +0100
@@ -0,0 +1,137 @@
+/**
+ * Back 2 Browser Bytecode Translator
+ * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, version 2 of the License.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program. Look for COPYING file in the top folder.
+ * If not, see http://opensource.org/licenses/GPL-2.0.
+ */
+package org.apidesign.bck2brwsr.vmtest.impl;
+
+import java.io.ByteArrayInputStream;
+import java.io.File;
+import java.io.FileWriter;
+import java.io.IOException;
+import java.io.InputStream;
+import java.lang.reflect.Constructor;
+import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
+import org.apidesign.bck2brwsr.launcher.Launcher;
+import org.apidesign.bck2brwsr.launcher.InvocationContext;
+import org.apidesign.bck2brwsr.vmtest.HtmlFragment;
+import org.apidesign.bck2brwsr.vmtest.Http;
+import org.testng.ITest;
+import org.testng.annotations.Test;
+
+/**
+ *
+ * @author Jaroslav Tulach <jtulach@netbeans.org>
+ */
+public final class Bck2BrwsrCase implements ITest {
+    private final Method m;
+    private final Launcher l;
+    private final String type;
+    private final boolean fail;
+    private final HtmlFragment html;
+    private final Http.Resource[] http;
+    Object value;
+
+    Bck2BrwsrCase(Method m, String type, Launcher l, boolean fail, HtmlFragment html, Http.Resource[] http) {
+        this.l = l;
+        this.m = m;
+        this.type = type;
+        this.fail = fail;
+        this.html = html;
+        this.http = http;
+    }
+
+    @Test(groups = "run")
+    public void executeCode() throws Throwable {
+        if (l != null) {
+            InvocationContext c = l.createInvocation(m.getDeclaringClass(), m.getName());
+            if (html != null) {
+                c.setHtmlFragment(html.value());
+            }
+            if (http != null) {
+                for (Http.Resource r : http) {
+                    if (!r.content().isEmpty()) {
+                        InputStream is = new ByteArrayInputStream(r.content().getBytes("UTF-8"));
+                        c.addHttpResource(r.path(), r.mimeType(), is);
+                    } else {
+                        InputStream is = m.getDeclaringClass().getResourceAsStream(r.resource());
+                        c.addHttpResource(r.path(), r.mimeType(), is);
+                    }
+                }
+            }
+            String res = c.invoke();
+            value = res;
+            if (fail) {
+                int idx = res.indexOf(':');
+                if (idx >= 0) {
+                    Class<? extends Throwable> thrwbl = null;
+                    try {
+                        Class<?> exCls = Class.forName(res.substring(0, idx));
+                        if (Throwable.class.isAssignableFrom(exCls)) {
+                            thrwbl = exCls.asSubclass(Throwable.class);
+                        }
+                    } catch (Exception ex) {
+                        // ignore
+                    }
+                    if (thrwbl != null) {
+                        Throwable t = null;
+                        try {
+                            for (Constructor<?> cnstr : thrwbl.getConstructors()) {
+                                if (cnstr.getParameterTypes().length == 1 && cnstr.getParameterTypes()[0].isAssignableFrom(String.class)) {
+                                    t = (Throwable) cnstr.newInstance(res.substring(idx + 1));
+                                    break;
+                                }
+                            }
+                        } catch (Throwable ex) {
+                            t = thrwbl.newInstance().initCause(ex);
+                        }
+                        if (t == null) {
+                            t = thrwbl.newInstance().initCause(new Exception(res.substring(idx)));
+                        }
+                        throw t;
+                    }
+                    throw new AssertionError(res);
+                }
+            }
+        } else {
+            try {
+                value = m.invoke(m.getDeclaringClass().newInstance());
+            } catch (InvocationTargetException ex) {
+                Throwable t = ex.getTargetException();
+                value = t.getClass().getName() + ":" + t.getMessage();
+                if (t instanceof AssertionError) {
+                    throw t;
+                }
+            }
+        }
+    }
+
+    @Override
+    public String getTestName() {
+        return m.getName() + "[" + typeName() + "]";
+    }
+
+    final String typeName() {
+        return type;
+    }
+    static void dumpJS(StringBuilder sb, Bck2BrwsrCase c) throws IOException {
+        File f = File.createTempFile(c.m.getName(), ".js");
+        try (final FileWriter w = new FileWriter(f)) {
+            w.append(c.l.toString());
+        }
+        sb.append("Path: ").append(f.getPath());
+    }
+}