///////////////////////////////////////////////////////////////////////////////////////////////
   // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
   // Copyright (C) 2001-2026 the original author or authors.
   //
   // This library is free software; you can redistribute it and/or
   // modify it under the terms of the GNU Lesser General Public
   // License as published by the Free Software Foundation; either
   // version 2.1 of the License, or (at your option) any later version.
   //
  // This library is distributed in the hope that it will be useful,
  // but WITHOUT ANY WARRANTY; without even the implied warranty of
  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  // Lesser General Public License for more details.
  //
  // You should have received a copy of the GNU Lesser General Public
  // License along with this library; if not, write to the Free Software
  // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  ///////////////////////////////////////////////////////////////////////////////////////////////
  
  package com.puppycrawl.tools.checkstyle.checks.metrics;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  import static com.puppycrawl.tools.checkstyle.checks.metrics.CyclomaticComplexityCheck.MSG_KEY;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
  
  public class CyclomaticComplexityCheckTest
      extends AbstractModuleTestSupport {
  
      @Override
      public String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/metrics/cyclomaticcomplexity";
      }
  
      @Test
      public void testSwitchBlockAsSingleDecisionPointSetToTrue() throws Exception {
  
          final String[] expected = {
              "14:5: " + getCheckMessage(MSG_KEY, 2, 0),
          };
  
          verifyWithInlineConfigParser(
                  getPath("InputCyclomaticComplexitySwitchBlocks.java"), expected);
      }
  
      @Test
      public void testSwitchBlockAsSingleDecisionPointSetToFalse() throws Exception {
  
          final String[] expected = {
              "14:5: " + getCheckMessage(MSG_KEY, 5, 0),
          };
  
          verifyWithInlineConfigParser(
                  getPath("InputCyclomaticComplexitySwitchBlocks2.java"), expected);
      }
  
      @Test
      public void testEqualsMaxComplexity() throws Exception {
  
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
  
          verifyWithInlineConfigParser(
                  getPath("InputCyclomaticComplexitySwitchBlocks3.java"), expected);
      }
  
      @Test
      public void test1() throws Exception {
  
          final String[] expected = {
              "15:5: " + getCheckMessage(MSG_KEY, 2, 0),
              "20:17: " + getCheckMessage(MSG_KEY, 2, 0),
              "32:5: " + getCheckMessage(MSG_KEY, 6, 0),
              "45:5: " + getCheckMessage(MSG_KEY, 3, 0),
              "55:5: " + getCheckMessage(MSG_KEY, 5, 0),
          };
  
          verifyWithInlineConfigParser(
                  getPath("InputCyclomaticComplexity1.java"), expected);
      }
  
      @Test
      public void test2() throws Exception {
  
          final String[] expected = {
              "16:5: " + getCheckMessage(MSG_KEY, 3, 0),
              "29:5: " + getCheckMessage(MSG_KEY, 3, 0),
              "41:5: " + getCheckMessage(MSG_KEY, 3, 0),
              "54:5: " + getCheckMessage(MSG_KEY, 1, 0),
              "58:13: " + getCheckMessage(MSG_KEY, 2, 0),
          };
  
          verifyWithInlineConfigParser(
                  getPath("InputCyclomaticComplexity2.java"), expected);
      }
  
     @Test
     public void testCyclomaticComplexityRecords1() throws Exception {
 
         final int max = 0;
 
         final String[] expected = {
             "18:9: " + getCheckMessage(MSG_KEY, 11, max),
             "49:9: " + getCheckMessage(MSG_KEY, 11, max),
             "81:9: " + getCheckMessage(MSG_KEY, 11, max),
         };
 
         verifyWithInlineConfigParser(
                 getPath("InputCyclomaticComplexityRecords1.java"), expected);
     }
 
     @Test
     public void testCyclomaticComplexityRecords2() throws Exception {
 
         final int max = 0;
 
         final String[] expected = {
             "17:9: " + getCheckMessage(MSG_KEY, 11, max),
             "49:9: " + getCheckMessage(MSG_KEY, 11, max),
         };
 
         verifyWithInlineConfigParser(
                 getPath("InputCyclomaticComplexityRecords2.java"), expected);
     }
 
     @Test
     public void testGetAcceptableTokens() {
         final CyclomaticComplexityCheck cyclomaticComplexityCheckObj =
             new CyclomaticComplexityCheck();
         final int[] actual = cyclomaticComplexityCheckObj.getAcceptableTokens();
         final int[] expected = {
             TokenTypes.CTOR_DEF,
             TokenTypes.METHOD_DEF,
             TokenTypes.INSTANCE_INIT,
             TokenTypes.STATIC_INIT,
             TokenTypes.LITERAL_WHILE,
             TokenTypes.LITERAL_DO,
             TokenTypes.LITERAL_FOR,
             TokenTypes.LITERAL_IF,
             TokenTypes.LITERAL_SWITCH,
             TokenTypes.LITERAL_CASE,
             TokenTypes.LITERAL_CATCH,
             TokenTypes.QUESTION,
             TokenTypes.LAND,
             TokenTypes.LOR,
             TokenTypes.COMPACT_CTOR_DEF,
             TokenTypes.LITERAL_WHEN,
         };
         assertWithMessage("Invalid acceptable tokens")
             .that(actual)
             .isEqualTo(expected);
     }
 
     @Test
     public void testGetRequiredTokens() {
         final CyclomaticComplexityCheck cyclomaticComplexityCheckObj =
             new CyclomaticComplexityCheck();
         final int[] actual = cyclomaticComplexityCheckObj.getRequiredTokens();
         final int[] expected = {
             TokenTypes.CTOR_DEF,
             TokenTypes.METHOD_DEF,
             TokenTypes.INSTANCE_INIT,
             TokenTypes.STATIC_INIT,
             TokenTypes.COMPACT_CTOR_DEF,
         };
         assertWithMessage("Invalid required tokens")
             .that(actual)
             .isEqualTo(expected);
     }
 
     @Test
     public void testHighMax() throws Exception {
         final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
 
         verifyWithInlineConfigParser(
                 getPath("InputCyclomaticComplexitySwitchBlocks4.java"), expected);
     }
 
     @Test
     public void testDefaultMax() throws Exception {
         final String[] expected = {
             "14:5: " + getCheckMessage(MSG_KEY, 12, 10),
         };
 
         verifyWithInlineConfigParser(
                 getPath("InputCyclomaticComplexitySwitchBlocks5.java"), expected);
     }
 
     @Test
     public void testWhenExpression() throws Exception {
         final String[] expected = {
             "16:4: " + getCheckMessage(MSG_KEY, 5, 0),
             "22:4: " + getCheckMessage(MSG_KEY, 5, 0),
             "31:4: " + getCheckMessage(MSG_KEY, 7, 0),
         };
         verifyWithInlineConfigParser(
                 getPath("InputCyclomaticComplexityWhenExpression.java"), expected);
     }
 
     @Test
     public void testWhenExpressionSwitchAsSinglePoint() throws Exception {
         final String[] expected = {
             "16:5: " + getCheckMessage(MSG_KEY, 5, 0),
             "22:5: " + getCheckMessage(MSG_KEY, 2, 0),
             "31:5: " + getCheckMessage(MSG_KEY, 2, 0),
             "41:5: " + getCheckMessage(MSG_KEY, 2, 0),
         };
         verifyWithInlineConfigParser(
                 getPath(
                         "InputCyclomaticComplexityWhenSwitchAsSinglePoint.java"), expected);
     }
 
     @Test
     public void testSwitchBlockAsSingleDecisionPointWithNestedSwitch() throws Exception {
         final String[] expected = {
             "17:5: " + getCheckMessage(MSG_KEY, 2, 0),
             "26:5: " + getCheckMessage(MSG_KEY, 2, 0),
             "41:5: " + getCheckMessage(MSG_KEY, 2, 0),
         };
         verifyWithInlineConfigParser(
                 getPath(
                         "InputCyclomaticComplexitySwitchBlocks6.java"), expected);
     }
 
 }