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 test for {@link KotlinDefaultArgumentsFilter}.
   */
  public class KotlinDefaultArgumentsFilterTest extends FilterTestBase {
  
  	private final IFilter filter = new KotlinDefaultArgumentsFilter();
  
  	private static MethodNode createMethod(final int access, final String name,
  			final String descriptor) {
  		final MethodNode m = new MethodNode(InstrSupport.ASM_API_VERSION,
  				access, name, descriptor, null, null);
  
  		m.visitVarInsn(Opcodes.ILOAD, 2);
  		m.visitInsn(Opcodes.ICONST_1);
  		m.visitInsn(Opcodes.IAND);
  		final Label label = new Label();
  		m.visitJumpInsn(Opcodes.IFEQ, label);
  		// default argument
  		m.visitLdcInsn(Integer.valueOf(42));
  		m.visitVarInsn(Opcodes.ISTORE, 1);
  		m.visitLabel(label);
  
  		m.visitVarInsn(Opcodes.ALOAD, 0);
  		m.visitVarInsn(Opcodes.ILOAD, 1);
  		m.visitMethodInsn(Opcodes.INVOKESPECIAL, "Target", "origin", "(I)V",
  				false);
  		m.visitInsn(Opcodes.RETURN);
  
  		return m;
  	}
  
  	@Test
  	public void should_filter() {
  		final MethodNode m = createMethod(Opcodes.ACC_SYNTHETIC,
  				"origin$default", "(LTarget;IILjava/lang/Object;)V");
  		context.classAnnotations
  				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
  
  		filter.filter(m, context, output);
  
  		assertIgnored(new Range(m.instructions.get(3), m.instructions.get(3)));
  	}
  
  	@Test
  	public void should_not_filter_when_not_kotlin() {
  		final MethodNode m = createMethod(Opcodes.ACC_SYNTHETIC,
  				"not_kotlin_synthetic$default",
  				"(LTarget;IILjava/lang/Object;)V");
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	@Test
  	public void should_not_filter_when_suffix_absent() {
  		final MethodNode m = createMethod(Opcodes.ACC_SYNTHETIC,
  				"synthetic_without_suffix", "(LTarget;IILjava/lang/Object;)V");
  		context.classAnnotations
  				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  	@Test
  	public void should_not_filter_when_not_synthetic() {
  		final MethodNode m = createMethod(0, "not_synthetic$default",
  				"(LTarget;IILjava/lang/Object;)V");
  		context.classAnnotations
  				.add(KotlinGeneratedFilter.KOTLIN_METADATA_DESC);
  
  		filter.filter(m, context, output);
  
  		assertIgnored();
  	}
  
  }
  