SourceForgeIssuesTest.java

package bsh;

import bsh.classpath.ClassManagerImpl;
import org.junit.After;
import org.junit.Assert;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import org.junit.runner.RunWith;

import java.lang.ref.WeakReference;
import java.util.concurrent.Callable;

@RunWith(FilteredTestRunner.class)
public class SourceForgeIssuesTest {

	@After
	public void after() {
		Interpreter.DEBUG = false;
	}


	/** <a href="http://sourceforge.net/tracker/?func=detail&aid=2898046&group_id=4075&atid=104075">Sourceforge issue "Error HERE! thrown while SAX parsing" - ID: 2898046</a>. */
	@Test
	public void sourceforge_issue_2898046() throws Exception {
		final String CODE_2898046 =
				/* 1*/ "import javax.xml.parsers.*;\n"+
				/* 2*/ "import org.xml.sax.InputSource;\n"+
				/* 3*/ "events = new ArrayList();"+
				/* 4*/ "factory = SAXParserFactory.newInstance();\n"+
				/* 5*/ "saxParser = factory.newSAXParser();\n"+
				/* 6*/ "parser = saxParser.getXMLReader();\n"+
				/* 7*/ "parser.setContentHandler( this );\n"+
				/* 8*/ "\n"+
				/* 9*/ "invoke( name, args ) {\n"+
				/*10*/ "	events.add( name );\n"+
				/*11*/ "}\n"+
				/*12*/ "\n"+
				/*13*/ "source = new InputSource(new StringReader(\"<xml>test</xml>\"));\n"+
				/*14*/ "parser.parse( source );" +
				/*15*/ "return events;";
		Assert.assertEquals(
				"[setDocumentLocator, startDocument, startElement, characters, endElement, endDocument]",
				TestUtil.eval(CODE_2898046).toString());
	}


	/** <a href="http://sourceforge.net/tracker/?func=detail&aid=2884749&group_id=4075&atid=104075">Sourceforge issue "Memory leak with WeakReferences" - ID: 2884749</a>. */
	@Test
	public void sourceforge_issue_2884749() throws Exception {
		final ClassManagerImpl classManager = new ClassManagerImpl();
		final WeakReference<BshClassManager.Listener> weakRef;
		{
			final BshClassManager.Listener listener = new DummyListener(1024 * 1000);
			classManager.addListener(listener);
			weakRef = new WeakReference<BshClassManager.Listener>(listener);
		}
		for (int i = 0; i < 10000; i++) {
			  classManager.addListener(new DummyListener(1024 * 100));
		}
		Assert.assertNull(weakRef.get());
	}


	/** <a href="http://sourceforge.net/tracker/?func=detail&aid=2945459&group_id=4075&atid=104075">Sourceforge issue "Parsing of long hex literals fails" - ID: 2945459</a>. */
	@Test
	public void sourceforge_issue_2945459() throws Exception {
		Assert.assertEquals(0x0000000001L, TestUtil.eval("long foo = 0x0000000001L;", "return foo"));
	}


	/** <a href="http://sourceforge.net/tracker/?func=detail&aid=2562805&group_id=4075&atid=104075">Sourceforge issue "Debug fails if called method argument is null" - ID: 2562805</a>. */
	@Test
	public void sourceforge_issue_2562805() throws Exception {
		Interpreter.DEBUG = true;
		TestUtil.eval("System.out.println(null);");
	}


	/**
	 * <a href="http://sourceforge.net/tracker/?func=detail&aid=2081602&group_id=4075&atid=104075">Sourceforge issue "NullPointerException Thrown by Overriden Method" - ID: 2081602</a>.
	 * Just a "learning test" to check the call flow for constructors of generated classes.
	 * @see #sourceforge_issue_2081602
	 **/
	@Test
	public void sourceforge_issue_2081602_learning_test() throws Exception {
		final Object result = TestUtil.eval(
				"Object echo(msg, x) {",
				"   print(msg + ' ' + x);",
				"   return x;",
				"}",
				"public class A implements java.util.concurrent.Callable {",
				"   int _id;",
				"   public A (int id) {",
				"      _id = echo(\"A\", id);",
				"   }",
				"   public Object call() { return _id; }",
				"}",
				"public class B extends A {",
				"   public B (int id) {",
				"      super (echo(\"B\", id * 2));",
				"   }",
				"}",
				"return new B (2);");
		Assert.assertEquals(4, ( (java.util.concurrent.Callable) result).call());
	}


	/**
	 * <a href="http://sourceforge.net/tracker/?func=detail&aid=2081602&group_id=4075&atid=104075">Sourceforge issue "NullPointerException Thrown by Overriden Method" - ID: 2081602</a>.
	 * Overriding a method which is invoked from super-constructor issues a NPE.
	 **/
	@Test
	@Category(KnownIssue.class)
	public void sourceforge_issue_2081602() throws Exception {
		// Interpreter.DEBUG = true;
		Callable result = (Callable) TestUtil.eval(
				"Object echo(msg, x) {",
				"   print(msg + ' ' + x);",
				"   return x;",
				"}",
				"public class A implements " + Callable.class.getName() + " {",
				"   int _id;",
				"   public A (int id) {",
				"      print (\" A.<init> \" + id);",
				"      setId(id);",
				"   }",
				"   public void setId (int id) {",
				"      print (\" A.setId \" + id);",
				"      _id = id;",
				"   }",
				"   public Object call() { return _id; }",
				"}",
				"public class B extends A {",
				"   public B (int id) {",
				"      super (echo(\" B.<init>\", id * 3));",
				"   }",
				"   public void setId (int id) {",
				"      print (\" B.setId \" + id);",
				"      super.setId(id * 5);",
				"   }",
				"}",
				"return new B (1);");
		Assert.assertEquals(15, result.call());
	}


	/**
	 * <a href="http://sourceforge.net/tracker/?func=detail&aid=1897313&group_id=4075&atid=104075">Sourceforge issue "error when looping over collections containing null" - ID: 1897313</a>.
	 **/
	@Test
	public void sourceforge_issue_1897313() throws Exception {
		TestUtil.eval("for (x: new String[]{\"foo\",null,\"bar\"}) { print(x); }");
	}


	private static class DummyListener implements BshClassManager.Listener {

		final byte[] _memory;


		public DummyListener(int numBytes) {
			_memory = new byte[numBytes];
		}


		public void classLoaderChanged() {
			// noop
		}

	}
}