test/src/jdk/nashorn/internal/runtime/test/TrustedScriptEngineTest.java - platform/external/jetbrains/jdk8u_nashorn - Git at Google

 /*
  * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License version 2 only, as
  * published by the Free Software Foundation.  Oracle designates this
  * particular file as subject to the "Classpath" exception as provided
  * by Oracle in the LICENSE file that accompanied this code.
  *
  * This code 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
  * version 2 for more details (a copy is included in the LICENSE file that
  * accompanied this code).
  *
  * You should have received a copy of the GNU General Public License version
  * 2 along with this work; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  *
  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  * or visit www.oracle.com if you need additional information or have any
  * questions.
  */

 package jdk.nashorn.internal.runtime.test;

 import static org.testng.Assert.assertEquals;
 import static org.testng.Assert.assertTrue;
 import static org.testng.Assert.fail;
 import javax.script.ScriptContext;
 import javax.script.ScriptEngine;
 import javax.script.ScriptEngineFactory;
 import javax.script.ScriptEngineManager;
 import javax.script.ScriptException;
 import javax.script.SimpleScriptContext;
 import jdk.nashorn.api.scripting.ClassFilter;
 import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
 import jdk.nashorn.internal.runtime.Version;
 import org.testng.annotations.Test;

 /**
  * Tests for trusted client usage of nashorn script engine factory extension API
  */
 @SuppressWarnings("javadoc")
 public class TrustedScriptEngineTest {
     @Test
     public void versionTest() {
         final ScriptEngineManager m = new ScriptEngineManager();
         final ScriptEngine e = m.getEngineByName("nashorn");
         assertEquals(e.getFactory().getEngineVersion(), Version.version());
     }

     private static class MyClassLoader extends ClassLoader {
         // to check if script engine uses the specified class loader
         private final boolean[] reached = new boolean[1];

         @Override
         protected Class<?> findClass(final String name) throws ClassNotFoundException {
             // flag that it reached here
             reached[0] = true;
             return super.findClass(name);
         }

         public boolean reached() {
             return reached[0];
         }
     }

     // These are for "private" extension API of NashornScriptEngineFactory that
     // accepts a ClassLoader and/or command line options.

     @Test
     public void factoryClassLoaderTest() {
         final ScriptEngineManager sm = new ScriptEngineManager();
         for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
             if (fac instanceof NashornScriptEngineFactory) {
                 final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
                 final MyClassLoader loader = new MyClassLoader();
                 // set the classloader as app class loader
                 final ScriptEngine e = nfac.getScriptEngine(loader);
                 try {
                     e.eval("Packages.foo");
                     // check that the class loader was attempted
                     assertTrue(loader.reached(), "did not reach class loader!");
                 } catch (final ScriptException se) {
                     se.printStackTrace();
                     fail(se.getMessage());
                 }
                 return;
             }
         }

         fail("Cannot find nashorn factory!");
     }

     @Test
     public void factoryClassLoaderAndOptionsTest() {
         final ScriptEngineManager sm = new ScriptEngineManager();
         for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
             if (fac instanceof NashornScriptEngineFactory) {
                 final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
                 final String[] options = new String[] { "-strict" };
                 final MyClassLoader loader = new MyClassLoader();
                 // set the classloader as app class loader
                 final ScriptEngine e = nfac.getScriptEngine(options, loader);
                 try {
                     e.eval("Packages.foo");
                     // check that the class loader was attempted
                     assertTrue(loader.reached(), "did not reach class loader!");
                 } catch (final ScriptException se) {
                     se.printStackTrace();
                     fail(se.getMessage());
                 }

                 try {
                     // strict mode - delete of a var should throw SyntaxError
                     e.eval("var d = 2; delete d;");
                 } catch (final ScriptException se) {
                     // check that the error message contains "SyntaxError"
                     assertTrue(se.getMessage().contains("SyntaxError"));
                 }

                 return;
             }
         }

         fail("Cannot find nashorn factory!");
     }

     @Test
     public void factoryOptionsTest() {
         final ScriptEngineManager sm = new ScriptEngineManager();
         for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
             if (fac instanceof NashornScriptEngineFactory) {
                 final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
                 // specify --no-syntax-extensions flag
                 final String[] options = new String[] { "--no-syntax-extensions" };
                 final ScriptEngine e = nfac.getScriptEngine(options);
                 try {
                     // try nashorn specific extension
                     e.eval("var f = funtion(x) 2*x;");
                     fail("should have thrown exception!");
                 } catch (final Exception ex) {
                     //empty
                 }
                 return;
             }
         }

         fail("Cannot find nashorn factory!");
     }

     @Test
     /**
      * Test repeated evals with --loader-per-compile=false
      * We used to get "class redefinition error".
      */
     public void noLoaderPerCompilerTest() {
         final ScriptEngineManager sm = new ScriptEngineManager();
         for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
             if (fac instanceof NashornScriptEngineFactory) {
                 final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
                 final String[] options = new String[] { "--loader-per-compile=false" };
                 final ScriptEngine e = nfac.getScriptEngine(options);
                 try {
                     e.eval("2 + 3");
                     e.eval("4 + 4");
                 } catch (final ScriptException se) {
                     se.printStackTrace();
                     fail(se.getMessage());
                 }
                 return;
             }
         }
         fail("Cannot find nashorn factory!");
     }

     @Test
     /**
      * Test that we can use same script name in repeated evals with --loader-per-compile=false
      * We used to get "class redefinition error" as name was derived from script name.
      */
     public void noLoaderPerCompilerWithSameNameTest() {
         final ScriptEngineManager sm = new ScriptEngineManager();
         for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
             if (fac instanceof NashornScriptEngineFactory) {
                 final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
                 final String[] options = new String[] { "--loader-per-compile=false" };
                 final ScriptEngine e = nfac.getScriptEngine(options);
                 e.put(ScriptEngine.FILENAME, "test.js");
                 try {
                     e.eval("2 + 3");
                     e.eval("4 + 4");
                 } catch (final ScriptException se) {
                     se.printStackTrace();
                     fail(se.getMessage());
                 }
                 return;
             }
         }
         fail("Cannot find nashorn factory!");
     }

     @Test
     public void globalPerEngineTest() throws ScriptException {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         final String[] options = new String[] { "--global-per-engine" };
         final ScriptEngine e = fac.getScriptEngine(options);

         e.eval("function foo() {}");

         final ScriptContext newCtx = new SimpleScriptContext();
         newCtx.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);

         // all global definitions shared and so 'foo' should be
         // visible in new Bindings as well.
         assertTrue(e.eval("typeof foo", newCtx).equals("function"));

         e.eval("function bar() {}", newCtx);

         // bar should be visible in default context
         assertTrue(e.eval("typeof bar").equals("function"));
     }

     @Test
     public void classFilterTest() throws ScriptException {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         final ScriptEngine e = fac.getScriptEngine(new ClassFilter() {
             @Override
             public boolean exposeToScripts(final String fullName) {
                 // don't allow anything that is not "java."
                 return fullName.startsWith("java.");
             }
         });

         assertEquals(e.eval("typeof javax.script.ScriptEngine"), "object");
         assertEquals(e.eval("typeof java.util.Vector"), "function");

         try {
             e.eval("Java.type('javax.script.ScriptContext')");
             fail("should not reach here");
         } catch (final ScriptException | RuntimeException se) {
             if (! (se.getCause() instanceof ClassNotFoundException)) {
                 fail("ClassNotFoundException expected");
             }
         }
     }

     @Test
     public void classFilterTest2() throws ScriptException {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         final ScriptEngine e = fac.getScriptEngine(new String[0], Thread.currentThread().getContextClassLoader(),
             new ClassFilter() {
                 @Override
                 public boolean exposeToScripts(final String fullName) {
                     // don't allow anything that is not "java."
                     return fullName.startsWith("java.");
                 }
             });

         assertEquals(e.eval("typeof javax.script.ScriptEngine"), "object");
         assertEquals(e.eval("typeof java.util.Vector"), "function");

         try {
             e.eval("Java.type('javax.script.ScriptContext')");
             fail("should not reach here");
         } catch (final ScriptException | RuntimeException se) {
             if (! (se.getCause() instanceof ClassNotFoundException)) {
                 fail("ClassNotFoundException expected");
             }
         }
     }

     @Test
     public void nullClassFilterTest() {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         try {
             fac.getScriptEngine((ClassFilter)null);
             fail("should have thrown NPE");
         } catch (final NullPointerException e) {
             //empty
         }
     }

     @Test
     public void nullClassFilterTest2() {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         try {
             fac.getScriptEngine(new String[0], null, null);
             fail("should have thrown NPE");
         } catch (final NullPointerException e) {
             //empty
         }
     }

     @Test
     public void nullArgsTest() {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         try {
             fac.getScriptEngine((String[])null);
             fail("should have thrown NPE");
         } catch (final NullPointerException e) {
             //empty
         }
     }

     @Test
     public void nullArgsTest2() {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         try {
             fac.getScriptEngine(null, null, new ClassFilter() {
                 @Override
                 public boolean exposeToScripts(final String name) {
                     return true;
                 }
             });
             fail("should have thrown NPE");
         } catch (final NullPointerException e) {
             //empty
         }
     }

     @Test
     public void nashornSwallowsConstKeyword() throws Exception {
         final NashornScriptEngineFactory f = new NashornScriptEngineFactory();
         final String[] args = new String[] { "--const-as-var" };
         final ScriptEngine engine = f.getScriptEngine(args);

         final Object ret = engine.eval(""
             + "(function() {\n"
             + "  const x = 10;\n"
             + "  return x;\n"
             + "})();"
         );
         assertEquals(ret, 10, "Parsed and executed OK");
     }

     @Test
     public void evalDefaultFileNameTest() throws ScriptException {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         final ScriptEngine engine = fac.getScriptEngine(new String[] { "--verify-code=true" });
         // default FILENAME being "<eval>" make sure generated code bytecode verifies.
         engine.eval("var a = 3;");
     }

     @Test
     public void evalFileNameWithSpecialCharsTest() throws ScriptException {
         final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
         final ScriptEngine engine = fac.getScriptEngine(new String[] { "--verify-code=true" });
         final ScriptContext ctxt = new SimpleScriptContext();
         // use file name with "dangerous" chars.
         ctxt.setAttribute(ScriptEngine.FILENAME, "<myscript>", ScriptContext.ENGINE_SCOPE);
         engine.eval("var a = 3;");
         ctxt.setAttribute(ScriptEngine.FILENAME, "[myscript]", ScriptContext.ENGINE_SCOPE);
         engine.eval("var h = 'hello';");
         ctxt.setAttribute(ScriptEngine.FILENAME, ";/\\$.", ScriptContext.ENGINE_SCOPE);
         engine.eval("var foo = 'world';");
         // name used by jjs shell tool for the interactive mode
         ctxt.setAttribute(ScriptEngine.FILENAME, "<shell>", ScriptContext.ENGINE_SCOPE);
         engine.eval("var foo = 'world';");
     }
 }
	/*
	* Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
	* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
	*
	* This code is free software; you can redistribute it and/or modify it
	* under the terms of the GNU General Public License version 2 only, as
	* published by the Free Software Foundation. Oracle designates this
	* particular file as subject to the "Classpath" exception as provided
	* by Oracle in the LICENSE file that accompanied this code.
	*
	* This code 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
	* version 2 for more details (a copy is included in the LICENSE file that
	* accompanied this code).
	*
	* You should have received a copy of the GNU General Public License version
	* 2 along with this work; if not, write to the Free Software Foundation,
	* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
	*
	* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
	* or visit www.oracle.com if you need additional information or have any
	* questions.
	*/

	package jdk.nashorn.internal.runtime.test;

	import static org.testng.Assert.assertEquals;
	import static org.testng.Assert.assertTrue;
	import static org.testng.Assert.fail;
	import javax.script.ScriptContext;
	import javax.script.ScriptEngine;
	import javax.script.ScriptEngineFactory;
	import javax.script.ScriptEngineManager;
	import javax.script.ScriptException;
	import javax.script.SimpleScriptContext;
	import jdk.nashorn.api.scripting.ClassFilter;
	import jdk.nashorn.api.scripting.NashornScriptEngineFactory;
	import jdk.nashorn.internal.runtime.Version;
	import org.testng.annotations.Test;

	/**
	* Tests for trusted client usage of nashorn script engine factory extension API
	*/
	@SuppressWarnings("javadoc")
	public class TrustedScriptEngineTest {
	@Test
	public void versionTest() {
	final ScriptEngineManager m = new ScriptEngineManager();
	final ScriptEngine e = m.getEngineByName("nashorn");
	assertEquals(e.getFactory().getEngineVersion(), Version.version());
	}

	private static class MyClassLoader extends ClassLoader {
	// to check if script engine uses the specified class loader
	private final boolean[] reached = new boolean[1];

	@Override
	protected Class<?> findClass(final String name) throws ClassNotFoundException {
	// flag that it reached here
	reached[0] = true;
	return super.findClass(name);
	}

	public boolean reached() {
	return reached[0];
	}
	}

	// These are for "private" extension API of NashornScriptEngineFactory that
	// accepts a ClassLoader and/or command line options.

	@Test
	public void factoryClassLoaderTest() {
	final ScriptEngineManager sm = new ScriptEngineManager();
	for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
	if (fac instanceof NashornScriptEngineFactory) {
	final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
	final MyClassLoader loader = new MyClassLoader();
	// set the classloader as app class loader
	final ScriptEngine e = nfac.getScriptEngine(loader);
	try {
	e.eval("Packages.foo");
	// check that the class loader was attempted
	assertTrue(loader.reached(), "did not reach class loader!");
	} catch (final ScriptException se) {
	se.printStackTrace();
	fail(se.getMessage());
	}
	return;
	}
	}

	fail("Cannot find nashorn factory!");
	}

	@Test
	public void factoryClassLoaderAndOptionsTest() {
	final ScriptEngineManager sm = new ScriptEngineManager();
	for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
	if (fac instanceof NashornScriptEngineFactory) {
	final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
	final String[] options = new String[] { "-strict" };
	final MyClassLoader loader = new MyClassLoader();
	// set the classloader as app class loader
	final ScriptEngine e = nfac.getScriptEngine(options, loader);
	try {
	e.eval("Packages.foo");
	// check that the class loader was attempted
	assertTrue(loader.reached(), "did not reach class loader!");
	} catch (final ScriptException se) {
	se.printStackTrace();
	fail(se.getMessage());
	}

	try {
	// strict mode - delete of a var should throw SyntaxError
	e.eval("var d = 2; delete d;");
	} catch (final ScriptException se) {
	// check that the error message contains "SyntaxError"
	assertTrue(se.getMessage().contains("SyntaxError"));
	}

	return;
	}
	}

	fail("Cannot find nashorn factory!");
	}

	@Test
	public void factoryOptionsTest() {
	final ScriptEngineManager sm = new ScriptEngineManager();
	for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
	if (fac instanceof NashornScriptEngineFactory) {
	final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
	// specify --no-syntax-extensions flag
	final String[] options = new String[] { "--no-syntax-extensions" };
	final ScriptEngine e = nfac.getScriptEngine(options);
	try {
	// try nashorn specific extension
	e.eval("var f = funtion(x) 2*x;");
	fail("should have thrown exception!");
	} catch (final Exception ex) {
	//empty
	}
	return;
	}
	}

	fail("Cannot find nashorn factory!");
	}

	@Test
	/**
	* Test repeated evals with --loader-per-compile=false
	* We used to get "class redefinition error".
	*/
	public void noLoaderPerCompilerTest() {
	final ScriptEngineManager sm = new ScriptEngineManager();
	for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
	if (fac instanceof NashornScriptEngineFactory) {
	final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
	final String[] options = new String[] { "--loader-per-compile=false" };
	final ScriptEngine e = nfac.getScriptEngine(options);
	try {
	e.eval("2 + 3");
	e.eval("4 + 4");
	} catch (final ScriptException se) {
	se.printStackTrace();
	fail(se.getMessage());
	}
	return;
	}
	}
	fail("Cannot find nashorn factory!");
	}

	@Test
	/**
	* Test that we can use same script name in repeated evals with --loader-per-compile=false
	* We used to get "class redefinition error" as name was derived from script name.
	*/
	public void noLoaderPerCompilerWithSameNameTest() {
	final ScriptEngineManager sm = new ScriptEngineManager();
	for (final ScriptEngineFactory fac : sm.getEngineFactories()) {
	if (fac instanceof NashornScriptEngineFactory) {
	final NashornScriptEngineFactory nfac = (NashornScriptEngineFactory)fac;
	final String[] options = new String[] { "--loader-per-compile=false" };
	final ScriptEngine e = nfac.getScriptEngine(options);
	e.put(ScriptEngine.FILENAME, "test.js");
	try {
	e.eval("2 + 3");
	e.eval("4 + 4");
	} catch (final ScriptException se) {
	se.printStackTrace();
	fail(se.getMessage());
	}
	return;
	}
	}
	fail("Cannot find nashorn factory!");
	}

	@Test
	public void globalPerEngineTest() throws ScriptException {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	final String[] options = new String[] { "--global-per-engine" };
	final ScriptEngine e = fac.getScriptEngine(options);

	e.eval("function foo() {}");

	final ScriptContext newCtx = new SimpleScriptContext();
	newCtx.setBindings(e.createBindings(), ScriptContext.ENGINE_SCOPE);

	// all global definitions shared and so 'foo' should be
	// visible in new Bindings as well.
	assertTrue(e.eval("typeof foo", newCtx).equals("function"));

	e.eval("function bar() {}", newCtx);

	// bar should be visible in default context
	assertTrue(e.eval("typeof bar").equals("function"));
	}

	@Test
	public void classFilterTest() throws ScriptException {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	final ScriptEngine e = fac.getScriptEngine(new ClassFilter() {
	@Override
	public boolean exposeToScripts(final String fullName) {
	// don't allow anything that is not "java."
	return fullName.startsWith("java.");
	}
	});

	assertEquals(e.eval("typeof javax.script.ScriptEngine"), "object");
	assertEquals(e.eval("typeof java.util.Vector"), "function");

	try {
	e.eval("Java.type('javax.script.ScriptContext')");
	fail("should not reach here");
	} catch (final ScriptException \| RuntimeException se) {
	if (! (se.getCause() instanceof ClassNotFoundException)) {
	fail("ClassNotFoundException expected");
	}
	}
	}

	@Test
	public void classFilterTest2() throws ScriptException {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	final ScriptEngine e = fac.getScriptEngine(new String[0], Thread.currentThread().getContextClassLoader(),
	new ClassFilter() {
	@Override
	public boolean exposeToScripts(final String fullName) {
	// don't allow anything that is not "java."
	return fullName.startsWith("java.");
	}
	});

	assertEquals(e.eval("typeof javax.script.ScriptEngine"), "object");
	assertEquals(e.eval("typeof java.util.Vector"), "function");

	try {
	e.eval("Java.type('javax.script.ScriptContext')");
	fail("should not reach here");
	} catch (final ScriptException \| RuntimeException se) {
	if (! (se.getCause() instanceof ClassNotFoundException)) {
	fail("ClassNotFoundException expected");
	}
	}
	}

	@Test
	public void nullClassFilterTest() {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	try {
	fac.getScriptEngine((ClassFilter)null);
	fail("should have thrown NPE");
	} catch (final NullPointerException e) {
	//empty
	}
	}

	@Test
	public void nullClassFilterTest2() {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	try {
	fac.getScriptEngine(new String[0], null, null);
	fail("should have thrown NPE");
	} catch (final NullPointerException e) {
	//empty
	}
	}

	@Test
	public void nullArgsTest() {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	try {
	fac.getScriptEngine((String[])null);
	fail("should have thrown NPE");
	} catch (final NullPointerException e) {
	//empty
	}
	}

	@Test
	public void nullArgsTest2() {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	try {
	fac.getScriptEngine(null, null, new ClassFilter() {
	@Override
	public boolean exposeToScripts(final String name) {
	return true;
	}
	});
	fail("should have thrown NPE");
	} catch (final NullPointerException e) {
	//empty
	}
	}

	@Test
	public void nashornSwallowsConstKeyword() throws Exception {
	final NashornScriptEngineFactory f = new NashornScriptEngineFactory();
	final String[] args = new String[] { "--const-as-var" };
	final ScriptEngine engine = f.getScriptEngine(args);

	final Object ret = engine.eval(""
	+ "(function() {\n"
	+ " const x = 10;\n"
	+ " return x;\n"
	+ "})();"
	);
	assertEquals(ret, 10, "Parsed and executed OK");
	}

	@Test
	public void evalDefaultFileNameTest() throws ScriptException {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	final ScriptEngine engine = fac.getScriptEngine(new String[] { "--verify-code=true" });
	// default FILENAME being "<eval>" make sure generated code bytecode verifies.
	engine.eval("var a = 3;");
	}

	@Test
	public void evalFileNameWithSpecialCharsTest() throws ScriptException {
	final NashornScriptEngineFactory fac = new NashornScriptEngineFactory();
	final ScriptEngine engine = fac.getScriptEngine(new String[] { "--verify-code=true" });
	final ScriptContext ctxt = new SimpleScriptContext();
	// use file name with "dangerous" chars.
	ctxt.setAttribute(ScriptEngine.FILENAME, "<myscript>", ScriptContext.ENGINE_SCOPE);
	engine.eval("var a = 3;");
	ctxt.setAttribute(ScriptEngine.FILENAME, "[myscript]", ScriptContext.ENGINE_SCOPE);
	engine.eval("var h = 'hello';");
	ctxt.setAttribute(ScriptEngine.FILENAME, ";/\\$.", ScriptContext.ENGINE_SCOPE);
	engine.eval("var foo = 'world';");
	// name used by jjs shell tool for the interactive mode
	ctxt.setAttribute(ScriptEngine.FILENAME, "<shell>", ScriptContext.ENGINE_SCOPE);
	engine.eval("var foo = 'world';");
	}
	}