content: /*******************************************************************************
   * Copyright (c) 2009, 2019 Mountainminds GmbH & Co. KG and Contributors
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *    Evgeny Mandrikov - initial API and implementation
   *
   *******************************************************************************/
  package org.jacoco.core.internal.analysis.filter;
  
  import org.jacoco.core.internal.instr.InstrSupport;
  import org.junit.Test;
  import org.objectweb.asm.Label;
  import org.objectweb.asm.Opcodes;
  import org.objectweb.asm.tree.LabelNode;
  import org.objectweb.asm.tree.MethodNode;
  
  /**
   * Unit tests for {@link SynchronizedFilter}.
   */
  public class SynchronizedFilterTest extends FilterTestBase {
  
  	private final SynchronizedFilter filter = new SynchronizedFilter();
  
  	private final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
  			"name", "()V", null, null);
  
  	@Test
  	public void javac() {
  		final Label start = new Label();
  		final Label end = new Label();
  		final Label handler = new Label();
  		final Label handlerEnd = new Label();
  		m.visitTryCatchBlock(start, end, handler, null);
  		m.visitTryCatchBlock(handler, handlerEnd, handler, null);
  
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitFieldInsn(Opcodes.GETFIELD, "Fun", "lock", "Ljava/lang/Object;");
  		m.visitInsn(Opcodes.DUP);
  		m.visitVarInsn(Opcodes.ASTORE, 1);
  		m.visitInsn(Opcodes.MONITORENTER);
  		m.visitLabel(start);
  		m.visitInsn(Opcodes.NOP);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.MONITOREXIT);
  		m.visitLabel(end);
  		final Label exit = new Label();
  		m.visitJumpInsn(Opcodes.GOTO, exit);
  		m.visitLabel(handler);
  		m.visitVarInsn(Opcodes.ASTORE, 2);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.MONITOREXIT);
  		m.visitLabel(handlerEnd);
  		m.visitVarInsn(Opcodes.ALOAD, 2);
  		m.visitInsn(Opcodes.ATHROW);
  		m.visitLabel(exit);
  		m.visitInsn(Opcodes.RETURN);
  
  		filter.filter(m, context, output);
  
  		assertIgnored(new Range((LabelNode) handler.info,
  				((LabelNode) exit.info).getPrevious()));
  	}
  
  	/**
  	 * <pre>
  	 *     try {
  	 *         ...
  	 *     } catch (Exception e) {
  	 *         ...
  	 *     } finally {
  	 *         ...
  	 *     }
  	 * </pre>
  	 */
  	@Test
  	public void javacTryCatchFinally() {
  		final Label start = new Label();
  		final Label end = new Label();
  		final Label catchHandler = new Label();
  		final Label finallyHandler = new Label();
  		final Label catchHandlerEnd = new Label();
  		m.visitTryCatchBlock(start, end, catchHandler, "java/lang/Exception");
  		m.visitTryCatchBlock(start, end, finallyHandler, null);
  		m.visitTryCatchBlock(catchHandler, catchHandlerEnd, finallyHandler,
  				null);
  
  		m.visitLabel(start);
  		// body
  		m.visitInsn(Opcodes.NOP);
  		m.visitLabel(end);
  		// finally
  		m.visitInsn(Opcodes.NOP);
  		final Label exit = new Label();
  		m.visitJumpInsn(Opcodes.GOTO, exit);
  		m.visitLabel(catchHandler);
  		m.visitVarInsn(Opcodes.ASTORE, 1);
  		// catch
  		m.visitInsn(Opcodes.NOP);
  		m.visitLabel(catchHandlerEnd);
  		// finally
  		m.visitInsn(Opcodes.NOP);
  		m.visitJumpInsn(Opcodes.GOTO, exit);
  		m.visitLabel(finallyHandler);
  		m.visitVarInsn(Opcodes.ASTORE, 2);
  		// finally
  		m.visitInsn(Opcodes.NOP);
  		m.visitVarInsn(Opcodes.ALOAD, 2);
  		m.visitInsn(Opcodes.ATHROW);
  		m.visitLabel(exit);
  		m.visitInsn(Opcodes.RETURN);
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	@Test
  	public void ecj() {
  		final Label start = new Label();
  		final Label end = new Label();
  		final Label handler = new Label();
  		final Label handlerEnd = new Label();
  		m.visitTryCatchBlock(start, end, handler, null);
  		m.visitTryCatchBlock(handler, handlerEnd, handler, null);
  
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitFieldInsn(Opcodes.GETFIELD, "Target", "lock",
  				"Ljava/lang/Object;");
  		m.visitInsn(Opcodes.DUP);
  		m.visitVarInsn(Opcodes.ASTORE, 1);
  		m.visitInsn(Opcodes.MONITORENTER);
  		m.visitLabel(start);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitInsn(Opcodes.NOP);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.MONITOREXIT);
  		m.visitLabel(end);
  		final Label exit = new Label();
  		m.visitJumpInsn(Opcodes.GOTO, exit);
  		m.visitLabel(handler);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.MONITOREXIT);
  		m.visitLabel(handlerEnd);
  		m.visitInsn(Opcodes.ATHROW);
  		m.visitLabel(exit);
  		m.visitInsn(Opcodes.RETURN);
  
  		filter.filter(m, context, output);
  
  		assertIgnored(new Range((LabelNode) handler.info,
  			((LabelNode) exit.info).getPrevious()));
  	}
  
  }
  