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.MethodNode;
  
  /**
   * Unit tests for {@link TryWithResourcesJavac11Filter}.
   */
  public class TryWithResourcesJavac11FilterTest extends FilterTestBase {
  
  	private final TryWithResourcesJavac11Filter filter = new TryWithResourcesJavac11Filter();
  
  	private final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION, 0,
  			"name", "()V", null, null);
  
  	/**
  	 * <pre>
  	 *   try (r = new ...) {
  	 *     ...
  	 *   }
  	 * </pre>
  	 */
  	@Test
  	public void without_null_check() {
  		final Range range1 = new Range();
  		final Range range2 = new Range();
  
  		final Label e = new Label();
  		final Label t = new Label();
  
  		final Label handler = new Label();
  		m.visitTryCatchBlock(handler, handler, handler, "java/lang/Throwable");
  
  		m.visitInsn(Opcodes.NOP);
  
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		range1.fromInclusive = m.instructions.getLast();
  		m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close",
  			"()V", false);
  		m.visitJumpInsn(Opcodes.GOTO, e);
  		range1.toInclusive = m.instructions.getLast();
  
  		m.visitLabel(handler);
  		range2.fromInclusive = m.instructions.getLast();
  		m.visitVarInsn(Opcodes.ASTORE, 1);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close",
  			"()V", false);
  		m.visitJumpInsn(Opcodes.GOTO, t);
  
  		m.visitVarInsn(Opcodes.ASTORE, 2);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitVarInsn(Opcodes.ALOAD, 2);
  		m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable",
  			"addSuppressed", "(Ljava/lang/Throwable;)V", false);
  		m.visitLabel(t);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.ATHROW);
  		range2.toInclusive = m.instructions.getLast();
  
  		m.visitLabel(e);
  
  		filter.filter(m, context, output);
  
  		assertIgnored(range1, range2);
  	}
  
  	/**
  	 * <pre>
  	 *   try (r = open()) {
  	 *     ...
  	 *   }
  	 * </pre>
  	 */
  	@Test
  	public void with_null_check() {
  		final Range range1 = new Range();
  		final Range range2 = new Range();
  
  		final Label e = new Label();
  		final Label t = new Label();
  
  		final Label handler = new Label();
  		m.visitTryCatchBlock(handler, handler, handler, "java/lang/Throwable");
  
  		m.visitInsn(Opcodes.NOP);
  
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		range1.fromInclusive = m.instructions.getLast();
  		m.visitJumpInsn(Opcodes.IFNULL, e);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close",
  				"()V", false);
  		m.visitJumpInsn(Opcodes.GOTO, e);
  		range1.toInclusive = m.instructions.getLast();
  
  		m.visitLabel(handler);
  		range2.fromInclusive = m.instructions.getLast();
  		m.visitVarInsn(Opcodes.ASTORE, 1);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitJumpInsn(Opcodes.IFNULL, t);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitMethodInsn(Opcodes.INVOKEINTERFACE, "Resource", "close",
  				"()V", false);
  		m.visitJumpInsn(Opcodes.GOTO, t);
  
  		m.visitVarInsn(Opcodes.ASTORE, 2);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitVarInsn(Opcodes.ALOAD, 2);
  		m.visitMethodInsn(Opcodes.INVOKEVIRTUAL, "java/lang/Throwable",
  				"addSuppressed", "(Ljava/lang/Throwable;)V", false);
  		m.visitLabel(t);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitInsn(Opcodes.ATHROW);
  		range2.toInclusive = m.instructions.getLast();
  
  		m.visitLabel(e);
  
  		filter.filter(m, context, output);
  
  		assertIgnored(range1, range2);
  	}
  
  }
  