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.internal.flow;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertSame;
  import static org.junit.Assert.assertTrue;
  
  import org.jacoco.core.internal.analysis.Instruction;
  import org.junit.Before;
  import org.junit.Test;
  import org.objectweb.asm.Label;
  
  /**
   * Unit tests for {@link LabelInfoTest}.
   */
  public class LabelInfoTest {
  
  	private Label label;
  
  	@Before
  	public void setup() {
  		label = new Label();
  	}
  
  	@Test
  	public void testDefaults() {
  		assertFalse(LabelInfo.isMultiTarget(label));
  		assertFalse(LabelInfo.isSuccessor(label));
  		assertFalse(LabelInfo.isMethodInvocationLine(label));
  		assertFalse(LabelInfo.isDone(label));
  		assertEquals(LabelInfo.NO_PROBE, LabelInfo.getProbeId(label));
  		assertNull(LabelInfo.getIntermediateLabel(label));
  		assertNull(LabelInfo.getInstruction(label));
  	}
  
  	@Test
  	public void testOtherInfoObject() {
  		label.info = new Object();
  		assertFalse(LabelInfo.isSuccessor(label));
  	}
  
  	@Test
  	public void testSuccessor() {
  		LabelInfo.setSuccessor(label);
  		assertFalse(LabelInfo.isMultiTarget(label));
  		assertTrue(LabelInfo.isSuccessor(label));
  	}
  
  	@Test
  	public void testMultiTarget1() {
  		LabelInfo.setTarget(label);
  		assertFalse(LabelInfo.isMultiTarget(label));
  		assertFalse(LabelInfo.isSuccessor(label));
  
  		LabelInfo.setTarget(label);
  		assertTrue(LabelInfo.isMultiTarget(label));
  		assertFalse(LabelInfo.isSuccessor(label));
  	}
  
  	@Test
  	public void testMultiTarget2() {
  		LabelInfo.setSuccessor(label);
  		assertFalse(LabelInfo.isMultiTarget(label));
  		assertTrue(LabelInfo.isSuccessor(label));
  
  		LabelInfo.setTarget(label);
  		assertTrue(LabelInfo.isMultiTarget(label));
  		assertTrue(LabelInfo.isSuccessor(label));
  	}
  
  	@Test
  	public void testMultiTarget3() {
  		LabelInfo.setTarget(label);
  		assertFalse(LabelInfo.isMultiTarget(label));
  		assertFalse(LabelInfo.isSuccessor(label));
  
  		LabelInfo.setSuccessor(label);
  		assertTrue(LabelInfo.isMultiTarget(label));
  		assertTrue(LabelInfo.isSuccessor(label));
  	}
  
  	@Test
  	public void testMethodInvocationLine() {
  		LabelInfo.setMethodInvocationLine(label);
  		assertTrue(LabelInfo.isMethodInvocationLine(label));
  	}
  
  	@Test
  	public void testNeedsProbe() {
  		testNeedsProbe(false, false, false, false);
  		testNeedsProbe(true, false, false, false);
  		testNeedsProbe(false, true, false, false);
  		testNeedsProbe(true, true, false, false);
  		testNeedsProbe(false, false, true, false);
  		testNeedsProbe(true, false, true, true);
  		testNeedsProbe(false, true, true, true);
  		testNeedsProbe(true, true, true, true);
  	}
  
  	private void testNeedsProbe(boolean multitarget,
  			boolean methodinvocationline, boolean successor, boolean expected) {
  		if (multitarget) {
  			LabelInfo.setTarget(label);
  			LabelInfo.setTarget(label);
  		}
  		if (methodinvocationline) {
  			LabelInfo.setMethodInvocationLine(label);
  		}
  		if (successor) {
  			LabelInfo.setSuccessor(label);
  		}
  		assertTrue(expected == LabelInfo.needsProbe(label));
  
  		// Reset:
  		label = new Label();
  	}
  
  	@Test
  	public void testSetResetDone1() {
  		LabelInfo.setDone(label);
  		assertTrue(LabelInfo.isDone(label));
  
  		LabelInfo.resetDone(label);
  		assertFalse(LabelInfo.isDone(label));
  	}
  
  	@Test
  	public void testSetResetDone2() {
  		LabelInfo.setDone(label);
  		assertTrue(LabelInfo.isDone(label));
  
  		LabelInfo.resetDone(new Label[] { label, new Label() });
  		assertFalse(LabelInfo.isDone(label));
  	}
  
  	@Test
  	public void testSetProbeId() {
  		LabelInfo.setProbeId(label, 123);
  		assertEquals(123, LabelInfo.getProbeId(label));
  	}
  
  	@Test
  	public void testSetIntermediateLabel() {
  		final Label i = new Label();
  		LabelInfo.setIntermediateLabel(label, i);
  		assertSame(i, LabelInfo.getIntermediateLabel(label));
  	}
  
  	@Test
  	public void testSetInstruction() {
  		final Instruction instruction = new Instruction(123);
  		LabelInfo.setInstruction(label, instruction);
  		assertSame(instruction, LabelInfo.getInstruction(label));
  	}
  
  }
  