code: ///////////////////////////////////////////////////////////////////////////////////////////////
  // checkstyle: Checks Java source code and other text files for adherence to a set of rules.
  // Copyright (C) 2001-2023 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.blocks;
  
  import static com.puppycrawl.tools.checkstyle.checks.blocks.NeedBracesCheck.MSG_KEY_NEED_BRACES;
  
  import org.junit.jupiter.api.Test;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.utils.CommonUtil;
  
  public class NeedBracesCheckTest extends AbstractModuleTestSupport {
  
      @Override
      protected String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/checks/blocks/needbraces";
      }
  
      @Test
      public void testIt() throws Exception {
          final String[] expected = {
              "30:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "do"),
              "42:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "43:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "45:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "46:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "59:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "60:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "62:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "64:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "83:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "84:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "86:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "88:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "else"),
              "90:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "98:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "else"),
              "100:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "101:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "104:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "105:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "106:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "107:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "do"),
              "108:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "109:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestIt.java"), expected);
      }
  
      @Test
      public void testItWithAllowsOn() throws Exception {
          final String[] expected = {
              "44:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "47:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "61:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "63:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "65:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "85:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "87:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "89:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "else"),
              "91:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "99:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "else"),
              "101:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "102:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "105:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "106:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "107:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "108:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "do"),
              "109:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "110:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestItWithAllowsOn.java"), expected);
      }
  
      @Test
      public void testSingleLineStatements() throws Exception {
          final String[] expected = {
              "32:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "38:43: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "47:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "55:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "62:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "do"),
              "65:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "71:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "100:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "104:11: " + getCheckMessage(MSG_KEY_NEED_BRACES, "else"),
              "116:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "123:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesSingleLineStatements.java"), expected);
      }
  
      @Test
      public void testSingleLineLambda() throws Exception {
          final String[] expected = {
              "16:29: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "19:22: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "24:60: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "25:27: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestSingleLineLambda.java"), expected);
      }
  
      @Test
      public void testDoNotAllowSingleLineLambda() throws Exception {
          final String[] expected = {
              "14:28: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "15:29: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "16:29: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "19:22: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "24:60: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "25:27: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestNotAllowSingleLineLambda.java"), expected);
      }
  
      @Test
      public void testSingleLineCaseDefault() throws Exception {
          final String[] expected = {
              "81:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "84:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "131:17: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "133:17: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestSingleLineCaseDefault.java"), expected);
      }
  
      @Test
      public void testSingleLineCaseDefault2() throws Exception {
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestSingleLineCaseDefault2.java"), expected);
      }
  
      @Test
      public void testSingleLineCaseDefaultNoSingleLine() throws Exception {
          final String[] expected = {
              "18:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "19:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "22:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "25:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "33:17: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "34:17: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestCaseDefaultNoSingleLine.java"), expected);
      }
  
      @Test
      public void testCycles() throws Exception {
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestCycles.java"), expected);
      }
  
      @Test
      public void testConditions() throws Exception {
          final String[] expected = {
              "50:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "53:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "65:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesTestConditions.java"), expected);
      }
  
      @Test
      public void testAllowEmptyLoopBodyTrue() throws Exception {
          final String[] expected = {
              "106:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesLoopBodyTrue.java"), expected);
      }
  
      @Test
      public void testAllowEmptyLoopBodyFalse() throws Exception {
          final String[] expected = {
              "19:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "23:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "27:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "28:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "32:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "37:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "42:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "48:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "54:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "59:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "63:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "69:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "76:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "98:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
              "102:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "for"),
              "106:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "if"),
              "117:9: " + getCheckMessage(MSG_KEY_NEED_BRACES, "while"),
          };
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesLoopBodyFalse.java"), expected);
      }
  
      @Test
      public void testEmptySingleLineDefaultStmt() throws Exception {
          final String[] expected = CommonUtil.EMPTY_STRING_ARRAY;
          verifyWithInlineConfigParser(
                  getPath("InputNeedBracesEmptySingleLineDefaultStmt.java"), expected);
      }
  
      @Test
      public void testNeedBracesSwitchExpressionNoSingleLine() throws Exception {
          final String[] expected = {
              "16:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "18:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "20:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "23:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "26:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "33:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "36:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "39:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "42:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "49:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "50:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "53:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "56:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "59:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "73:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "80:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              };
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputNeedBracesTestSwitchExpressionNoSingleLine.java"),
              expected);
      }
  
      @Test
      public void testNeedBracesSwitchExpression() throws Exception {
          final String[] expected = {
              "16:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "18:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "20:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "23:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "26:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "33:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "36:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "39:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "42:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "49:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "50:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
              "53:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "56:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "case"),
              "59:13: " + getCheckMessage(MSG_KEY_NEED_BRACES, "default"),
              "73:47: " + getCheckMessage(MSG_KEY_NEED_BRACES, "->"),
          };
          verifyWithInlineConfigParser(
                  getNonCompilablePath("InputNeedBracesTestSwitchExpression.java"),
              expected);
      }
  
  }
  