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.Opcodes;
  import org.objectweb.asm.tree.MethodNode;
  
  /**
   * Unit tests for {@link EnumEmptyConstructorFilter}.
   */
  public class EnumEmptyConstructorFilterTest extends FilterTestBase {
  
  	private final EnumEmptyConstructorFilter filter = new EnumEmptyConstructorFilter();
  
  	@Test
  	public void should_filter() {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				Opcodes.ACC_PRIVATE, "<init>", "(Ljava/lang/String;I)V", null,
  				null);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitVarInsn(Opcodes.ILOAD, 2);
  		m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>",
  				"(Ljava/lang/String;I)V", false);
  		m.visitInsn(Opcodes.RETURN);
  		context.superClassName = "java/lang/Enum";
  
  		filter.filter(m, context, output);
  
  		assertIgnored(new Range(m.instructions.getFirst(), m.instructions.getLast()));
  	}
  
  	/**
  	 * <code><pre>
  	 * enum E {
  	 *   ;
  	 *   private E() {
  	 *     ...
  	 *   }
  	 * }
  	 * </pre></code>
  	 */
  	@Test
  	public void should_not_filter_non_empty_constructor() {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				Opcodes.ACC_PRIVATE, "<init>", "(Ljava/lang/String;I)V", null,
  				null);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitVarInsn(Opcodes.ILOAD, 2);
  		m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>",
  				"(Ljava/lang/String;I)V", false);
  		m.visitInsn(Opcodes.NOP);
  		m.visitInsn(Opcodes.RETURN);
  		context.superClassName = "java/lang/Enum";
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	/**
  	 * <code><pre>
  	 * enum E {
  	 *   ;
  	 *   private E(long p) {
  	 *   }
  	 * }
  	 * </pre></code>
  	 */
  	@Test
  	public void should_not_filter_constructor_with_additional_parameters() {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				Opcodes.ACC_PRIVATE, "<init>", "(Ljava/lang/String;IJ)V", null,
  				null);
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitVarInsn(Opcodes.ALOAD, 1);
  		m.visitVarInsn(Opcodes.ILOAD, 2);
  		m.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Enum", "<init>",
  				"(Ljava/lang/String;I)V", false);
  		m.visitInsn(Opcodes.RETURN);
  		context.superClassName = "java/lang/Enum";
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	/**
  	 * <code><pre>
  	 * enum E {
  	 *   ;
  	 *   private void method(String p1, int p2) {
  	 *   }
  	 * }
  	 * </pre></code>
  	 */
  	@Test
  	public void should_not_filter_non_constructor() {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				Opcodes.ACC_PRIVATE, "method", "(Ljava/lang/String;I)V", null,
  				null);
  		m.visitInsn(Opcodes.NOP);
  		context.superClassName = "java/lang/Enum";
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	@Test
  	public void should_not_filter_non_Enum() {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				Opcodes.ACC_PRIVATE, "<init>", "(Ljava/lang/String;I)V", null,
  				null);
  		m.visitInsn(Opcodes.NOP);
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  }
  