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:
   *    Marc R. Hoffmann - initial API and implementation
   *    
   *******************************************************************************/
  package org.jacoco.core.analysis;
  
  import static org.jacoco.core.analysis.ICoverageNode.ElementType.GROUP;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Comparator;
  
  import org.jacoco.core.analysis.ICoverageNode.CounterEntity;
  import org.jacoco.core.internal.analysis.CounterImpl;
  import org.junit.Test;
  
  /**
   * Unit tests for {@link CounterComparator}.
   */
  public class CounterComparatorTest {
  
  	@Test
  	public void testTotalItemsComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.TOTALITEMS;
  		assertCmpLess(cmp, 19, 5, 19, 6);
  		assertCmpEquals(cmp, 20, 5, 19, 6);
  		assertCmpGreater(cmp, 21, 5, 19, 6);
  	}
  
  	@Test
  	public void testCoveredItemsComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.COVEREDITEMS;
  		assertCmpLess(cmp, 73, 7, 42, 8);
  		assertCmpEquals(cmp, 42, 8, 82, 8);
  		assertCmpGreater(cmp, 21, 9, 32, 8);
  	}
  
  	@Test
  	public void testMissedItemsComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.MISSEDITEMS;
  		assertCmpLess(cmp, 10, 40, 11, 80);
  		assertCmpEquals(cmp, 10, 40, 10, 80);
  		assertCmpGreater(cmp, 11, 39, 10, 80);
  	}
  
  	@Test
  	public void testCoveredRatioComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.COVEREDRATIO;
  		assertCmpLess(cmp, 25, 25, 44, 46);
  		assertCmpEquals(cmp, 40, 10, 64, 16);
  		assertCmpGreater(cmp, 25, 25, 46, 44);
  	}
  
  	@Test
  	public void testMissedRatioComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.MISSEDRATIO;
  		assertCmpLess(cmp, 25, 25, 46, 44);
  		assertCmpEquals(cmp, 40, 10, 64, 16);
  		assertCmpGreater(cmp, 25, 25, 44, 46);
  	}
  
  	@Test
  	public void testReverseComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.TOTALITEMS.reverse();
  		assertCmpGreater(cmp, 19, 5, 19, 6);
  		assertCmpEquals(cmp, 20, 5, 19, 6);
  		assertCmpLess(cmp, 21, 5, 19, 6);
  	}
  
  	@Test
  	public void testReverseReverseComparator() {
  		final Comparator<ICounter> cmp = CounterComparator.TOTALITEMS.reverse()
  				.reverse();
  		assertCmpGreater(cmp, 21, 5, 19, 6);
  		assertCmpEquals(cmp, 20, 5, 19, 6);
  		assertCmpLess(cmp, 19, 5, 19, 6);
  	}
  
  	@Test
  	public void testNodeComparator1() {
  		ICoverageNode d1 = new MockNode(18);
  		ICoverageNode d2 = new MockNode(15);
  		final Comparator<ICoverageNode> cmp = CounterComparator.TOTALITEMS
  				.on(CounterEntity.INSTRUCTION);
  		assertTrue(cmp.compare(d1, d2) > 0);
  	}
  
  	@Test
  	public void testNodeComparator2() {
  		ICoverageNode d1 = new MockNode(18);
  		ICoverageNode d2 = new MockNode(15);
  		final Comparator<ICoverageNode> cmp = CounterComparator.TOTALITEMS
  				.on(CounterEntity.LINE);
  		assertEquals(0, cmp.compare(d1, d2), 0.0);
  	}
  
  	private void assertCmpEquals(Comparator<ICounter> cmp, int missed1,
  			int covered1, int missed2, int covered2) {
  		assertEquals(0,
  				cmp.compare(ctr(missed1, covered1), ctr(missed2, covered2)),
  				0.0);
  	}
  
  	private void assertCmpLess(Comparator<ICounter> cmp, int missed1,
  			int covered1, int missed2, int covered2) {
  		assertTrue(cmp.compare(ctr(missed1, covered1), ctr(missed2, covered2)) < 0);
  	}
  
  	private void assertCmpGreater(Comparator<ICounter> cmp, int missed1,
  			int covered1, int missed2, int covered2) {
  		assertTrue(cmp.compare(ctr(missed1, covered1), ctr(missed2, covered2)) > 0);
  	}
  
  	private CounterImpl ctr(int missed, int covered) {
  		return CounterImpl.getInstance(missed, covered);
  	}
  
  	private static final class MockNode extends CoverageNodeImpl {
  		MockNode(int total) {
  			super(GROUP, "mock");
  			instructionCounter = CounterImpl.getInstance(total, 0);
  		}
  	}
  
  }
  