///////////////////////////////////////////////////////////////////////////////////////////////
   // 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.filters;
  
  import static com.google.common.truth.Truth.assertWithMessage;
  import static com.puppycrawl.tools.checkstyle.checks.naming.AbstractNameCheck.MSG_INVALID_PATTERN;
  import static com.puppycrawl.tools.checkstyle.checks.sizes.LineLengthCheck.MSG_KEY;
  import static com.puppycrawl.tools.checkstyle.internal.utils.TestUtil.getExpectedThrowable;
  
  import java.io.File;
  import java.io.FileNotFoundException;
  import java.io.IOException;
  import java.nio.file.Files;
  import java.nio.file.StandardCopyOption;
  import java.util.List;
  
  import org.junit.jupiter.api.Test;
  import org.junit.jupiter.api.io.TempDir;
  
  import com.puppycrawl.tools.checkstyle.AbstractModuleTestSupport;
  import com.puppycrawl.tools.checkstyle.api.AuditEvent;
  import com.puppycrawl.tools.checkstyle.api.CheckstyleException;
  import com.puppycrawl.tools.checkstyle.api.SeverityLevel;
  import com.puppycrawl.tools.checkstyle.api.TokenTypes;
  import com.puppycrawl.tools.checkstyle.api.Violation;
  import com.puppycrawl.tools.checkstyle.checks.coding.MagicNumberCheck;
  import com.puppycrawl.tools.checkstyle.checks.naming.ConstantNameCheck;
  import com.puppycrawl.tools.checkstyle.checks.regexp.RegexpSinglelineCheck;
  import com.puppycrawl.tools.checkstyle.checks.sizes.LineLengthCheck;
  import com.puppycrawl.tools.checkstyle.internal.utils.TestUtil;
  
  public class SuppressWithNearbyTextFilterTest extends AbstractModuleTestSupport {
  
      private static final String REGEXP_SINGLELINE_CHECK_FORMAT = "this should not appear";
  
      @TempDir
      public File temporaryFolder;
  
      @Override
      public String getPackageLocation() {
          return "com/puppycrawl/tools/checkstyle/filters/suppresswithnearbytextfilter";
      }
  
      @Test
      public void testDefaultConfig() throws Exception {
          final int expectedLineLength = 90;
          final String pattern = "^[A-Z][A-Z0-9]*(_[A-Z0-9]+)*$";
  
          final String[] violationMessages = {
              "29: " + getLineLengthCheckMessage(expectedLineLength, 94),
              "31: " + getLineLengthCheckMessage(expectedLineLength, 97),
              "41: " + getLineLengthCheckMessage(expectedLineLength, 94),
              "44:22: " + getCheckMessage(ConstantNameCheck.class,
                      MSG_INVALID_PATTERN, "badConstant", pattern),
              "47:22: " + getCheckMessage(ConstantNameCheck.class,
                      MSG_INVALID_PATTERN, "badConstant1", pattern),
          };
  
          final String[] suppressedMessages = {
              "31: " + getLineLengthCheckMessage(expectedLineLength, 97),
              "41: " + getLineLengthCheckMessage(expectedLineLength, 94),
              "47:22: " + getCheckMessage(ConstantNameCheck.class,
                      MSG_INVALID_PATTERN, "badConstant1", pattern),
          };
  
          verifyFilterWithInlineConfigParser(
              getPath("InputSuppressWithNearbyTextFilterDefaultConfig.java"),
              violationMessages, removeSuppressed(violationMessages, suppressedMessages)
          );
      }
  
      @Test
      public void testNearbyTextPattern() throws Exception {
          final int expectedLineLength = 90;
  
          final String[] violationMessages = {
              "15: " + getRegexpSinglelineCheckMessage(),
              "28: " + getLineLengthCheckMessage(expectedLineLength, 94),
              "33: " + getLineLengthCheckMessage(expectedLineLength, 93),
              "33: " + getRegexpSinglelineCheckMessage(),
              "39: " + getLineLengthCheckMessage(expectedLineLength, 93),
              "44: " + getRegexpSinglelineCheckMessage(),
             "49: " + getLineLengthCheckMessage(expectedLineLength, 95),
             "54: " + getRegexpSinglelineCheckMessage(),
             "58: " + getLineLengthCheckMessage(expectedLineLength, 97),
         };
 
         final String[] suppressedMessages = {
             "33: " + getLineLengthCheckMessage(expectedLineLength, 93),
             "33: " + getRegexpSinglelineCheckMessage(),
             "39: " + getLineLengthCheckMessage(expectedLineLength, 93),
             "49: " + getLineLengthCheckMessage(expectedLineLength, 95),
             "54: " + getRegexpSinglelineCheckMessage(),
             "58: " + getLineLengthCheckMessage(expectedLineLength, 97),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterNearbyTextPattern.css.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testCheckPattern() throws Exception {
         final int expectedLineLength = 80;
 
         final String[] violationMessages = {
             "15: " + getRegexpSinglelineCheckMessage(),
             "28: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "29: " + getRegexpSinglelineCheckMessage(),
             "35: " + getLineLengthCheckMessage(expectedLineLength, 87),
         };
 
         final String[] suppressedMessages = {
             "28: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "35: " + getLineLengthCheckMessage(expectedLineLength, 87),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterCheckPattern.bash.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testMessagePattern() throws Exception {
         final int expectedLineLength = 90;
 
         final String[] violationMessages = {
             "15: " + getRegexpSinglelineCheckMessage(),
             "33: " + getRegexpSinglelineCheckMessage(),
             "38: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "42: " + getLineLengthCheckMessage(expectedLineLength, 96),
         };
 
         final String[] suppressedMessages = {
             "38: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "42: " + getLineLengthCheckMessage(expectedLineLength, 96),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterMessagePattern.xml.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testIdPattern() throws Exception {
         final int expectedLineLength = 80;
 
         final String[] violationMessages = {
             "16: " + getRegexpSinglelineCheckMessage(),
             "29: " + getRegexpSinglelineCheckMessage(),
             "34: " + getLineLengthCheckMessage(expectedLineLength, 83),
             "38: " + getLineLengthCheckMessage(expectedLineLength, 84),
         };
 
         final String[] suppressedMessages = {
             "34: " + getLineLengthCheckMessage(expectedLineLength, 83),
             "38: " + getLineLengthCheckMessage(expectedLineLength, 84),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterIdPattern.html.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testLineRangePositive3() throws Exception {
         final int expectedLineLength = 92;
 
         final String[] violationMessages = {
             "15: " + getRegexpSinglelineCheckMessage(),
             "27: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "28: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "29: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "30: " + getLineLengthCheckMessage(expectedLineLength, 93),
             "33: " + getRegexpSinglelineCheckMessage(),
             "34: " + getRegexpSinglelineCheckMessage(),
             "35: " + getRegexpSinglelineCheckMessage(),
             "36: " + getRegexpSinglelineCheckMessage(),
         };
 
         final String[] suppressedMessages = {
             "27: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "28: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "29: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "33: " + getRegexpSinglelineCheckMessage(),
             "34: " + getRegexpSinglelineCheckMessage(),
             "35: " + getRegexpSinglelineCheckMessage(),
             "36: " + getRegexpSinglelineCheckMessage(),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterLineRangePositive3.sql.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testLineRangeNegative2() throws Exception {
         final int expectedLineLength = 91;
 
         final String[] violationMessages = {
             "15: " + getRegexpSinglelineCheckMessage(),
             "27: " + getLineLengthCheckMessage(expectedLineLength, 96),
             "28: " + getLineLengthCheckMessage(expectedLineLength, 94),
             "29: " + getLineLengthCheckMessage(expectedLineLength, 94),
             "30: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "33: " + getRegexpSinglelineCheckMessage(),
             "34: " + getRegexpSinglelineCheckMessage(),
             "35: " + getRegexpSinglelineCheckMessage(),
             "36: " + getRegexpSinglelineCheckMessage(),
         };
 
         final String[] suppressedMessages = {
             "28: " + getLineLengthCheckMessage(expectedLineLength, 94),
             "29: " + getLineLengthCheckMessage(expectedLineLength, 94),
             "30: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "34: " + getRegexpSinglelineCheckMessage(),
             "35: " + getRegexpSinglelineCheckMessage(),
             "36: " + getRegexpSinglelineCheckMessage(),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterLineRangeNegative2.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testVariableCheckPatternAndLineRange() throws Exception {
         final int expectedLineLength = 85;
 
         final String[] violationMessages = {
             "19: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "20: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "21: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "22: " + getLineLengthCheckMessage(expectedLineLength, 87),
             "24: " + getLineLengthCheckMessage(expectedLineLength, 87),
             "25: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "26: " + getLineLengthCheckMessage(expectedLineLength, 89),
         };
 
         final String[] suppressedMessages = {
             "19: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "20: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "21: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "25: " + getLineLengthCheckMessage(expectedLineLength, 89),
             "26: " + getLineLengthCheckMessage(expectedLineLength, 89),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilter"
                     + "VariableNearbyTextPatternAndLineRange.xml.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testNearbyTextPatternAny() throws Exception {
         final int expectedLineLength = 76;
 
         final String[] violationMessages = {
             "18: " + getLineLengthCheckMessage(expectedLineLength, 80),
         };
 
         final String[] suppressedMessages = {
             "18: " + getLineLengthCheckMessage(expectedLineLength, 80),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterNearbyTextPatternAny.txt"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testNearbyTextPatternCompactVariableCheckPattern() throws Exception {
         final String[] violationMessages = {
             "26:13: " + getCheckMessage(MagicNumberCheck.class, MagicNumberCheck.MSG_KEY, "42"),
             "27:13: " + getCheckMessage(MagicNumberCheck.class, MagicNumberCheck.MSG_KEY, "43"),
         };
 
         final String[] suppressedMessages = {
             "26:13: " + getCheckMessage(MagicNumberCheck.class, MagicNumberCheck.MSG_KEY, "42"),
         };
 
         verifyFilterWithInlineConfigParser(
                 getPath("InputSuppressWithNearbyTextFilterNearbyTextPattern"
                         + "CompactVariableCheckPattern.java"),
                 violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testNearbyTextPatternUrlLineLengthSuppression() throws Exception {
         final int expectedLineLength = 90;
 
         final String[] violationMessages = {
             "32: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "39: " + getLineLengthCheckMessage(expectedLineLength, 97),
         };
 
         final String[] suppressedMessages = {
             "32: " + getLineLengthCheckMessage(expectedLineLength, 98),
             "39: " + getLineLengthCheckMessage(expectedLineLength, 97),
         };
 
         verifyFilterWithInlineConfigParser(
             getPath("InputSuppressWithNearbyTextFilterNearbyTextPatternUrlLineLengthSuppression"
                     + ".java"),
             violationMessages, removeSuppressed(violationMessages, suppressedMessages)
         );
     }
 
     @Test
     public void testInvalidCheckPattern() {
         final String[] violationAndSuppressedMessages = {
             "18: " + getLineLengthCheckMessage(80, 93),
         };
 
         final CheckstyleException exc = getExpectedThrowable(
                 CheckstyleException.class,
                 () -> {
                     verifyFilterWithInlineConfigParser(
                         getPath("InputSuppressWithNearbyTextFilterInvalidCheckPattern.txt"),
                         violationAndSuppressedMessages
                     );
                 });
         final IllegalArgumentException cause = (IllegalArgumentException) exc.getCause();
         assertWithMessage("Invalid exception message")
             .that(cause)
             .hasMessageThat()
             .isEqualTo("unable to parse expanded comment a![b");
     }
 
     @Test
     public void testInvalidIdPattern() {
         final String[] violationAndSuppressedMessages = {
             "18: " + getLineLengthCheckMessage(80, 93),
         };
 
         final CheckstyleException exc = getExpectedThrowable(
                 CheckstyleException.class,
                 () -> {
                     verifyFilterWithInlineConfigParser(
                         getPath("InputSuppressWithNearbyTextFilterInvalidIdPattern.txt"),
                         violationAndSuppressedMessages
                     );
                 });
         final IllegalArgumentException cause = (IllegalArgumentException) exc.getCause();
         assertWithMessage("Invalid exception message")
             .that(cause)
             .hasMessageThat()
             .isEqualTo("unable to parse expanded comment a![b");
     }
 
     @Test
     public void testInvalidMessagePattern() {
         final String[] violationAndSuppressedMessages = {
             "18: " + getLineLengthCheckMessage(80, 93),
         };
 
         final CheckstyleException exc = getExpectedThrowable(
                 CheckstyleException.class,
                 () -> {
                     verifyFilterWithInlineConfigParser(
                         getPath("InputSuppressWithNearbyTextFilterInvalidMessagePattern.txt"),
                         violationAndSuppressedMessages
                     );
                 });
         final IllegalArgumentException cause = (IllegalArgumentException) exc.getCause();
         assertWithMessage("Invalid exception message")
             .that(cause)
             .hasMessageThat()
             .isEqualTo("unable to parse expanded comment a![b");
     }
 
     @Test
     public void testInvalidLineRange() {
         final String[] violationAndSuppressedMessages = {
             "18: " + getLineLengthCheckMessage(80, 93),
         };
 
         final CheckstyleException exc = getExpectedThrowable(
                 CheckstyleException.class,
                 () -> {
                     verifyFilterWithInlineConfigParser(
                         getPath("InputSuppressWithNearbyTextFilterInvalidLineRange.txt"),
                         violationAndSuppressedMessages
                     );
                 });
         assertWithMessage("Invalid exception message")
             .that(exc)
             .hasCauseThat()
             .hasMessageThat()
             .isEqualTo("unable to parse line range"
                     + " from 'SUPPRESS CHECKSTYLE LineLengthCheck' using a!b");
     }
 
     /**
      * Calls the filter twice and removes input file in between to ensure that
      * the cached file is not read twice.
      * We cannot use {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser}
      * because to kill pitest survival we need to remove target file between
      * filter execution to accept violation
      */
     @Test
     public void testCachingExecution() throws Exception {
         final SuppressWithNearbyTextFilter suppressFilter = new SuppressWithNearbyTextFilter();
         final String inputPath =
                 getPath("InputSuppressWithNearbyTextFilterDefaultConfig.java");
         final File tempFile = new File(temporaryFolder,
                 "InputSuppressWithNearbyTextFilterDefaultConfig.java");
         Files.copy(new File(inputPath).toPath(), tempFile.toPath(),
                 StandardCopyOption.REPLACE_EXISTING);
 
         final AuditEvent auditEvent1 = new AuditEvent(
                 tempFile.getPath(), tempFile.getPath(),
                 new Violation(1, null, null, null, null,
                         Object.class, null)
         );
         suppressFilter.accept(auditEvent1);
         final boolean deleted = tempFile.delete();
         assertWithMessage("Temporary file should be deleted.")
                 .that(deleted).isTrue();
         final AuditEvent auditEvent2 = new AuditEvent(
                 tempFile.getPath(), tempFile.getPath(),
                 new Violation(2, null, null, null, null,
                         Object.class, null)
         );
         suppressFilter.accept(auditEvent2);
 
         assertWithMessage("Cache should handle missing file.")
                 .that(tempFile.exists()).isFalse();
     }
 
     /**
      * Calls the filter with an audit event without a violation and asserts that the filter
      * accepts the event. Our goal is 100% test coverage and it is not possible to create
      * null violation with {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser}.
      */
     @Test
     public void testAcceptNullViolation() {
         final SuppressWithNearbyTextFilter filter = new SuppressWithNearbyTextFilter();
         final AuditEvent auditEvent = new AuditEvent(this);
         assertWithMessage("Filter should accept audit event")
                 .that(filter.accept(auditEvent))
                 .isTrue();
         assertWithMessage("File name should not be null")
             .that(auditEvent.getFileName())
             .isNull();
     }
 
     /**
      * Calls the filter with an audit event for a non-existing file and asserts that the filter
      * throws an exception. Our goal is 100% test coverage and we cannot use
      * {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser} because
      * {@code InlineConfigParser} does not allow to specify a non-existing file.
      */
     @Test
     public void testThrowsIllegalStateExceptionWhenFileNotFound() {
         final Violation message = new Violation(1, 1, 1, TokenTypes.CLASS_DEF,
             "messages.properties", "key", null, SeverityLevel.ERROR, null, getClass(), null);
         final String fileName = "nonexisting_file";
         final AuditEvent auditEvent = new AuditEvent(this, fileName, message);
         final SuppressWithNearbyTextFilter filter = new SuppressWithNearbyTextFilter();
 
         final IllegalStateException exc = getExpectedThrowable(
                 IllegalStateException.class,
                 () -> {
                     filter.accept(auditEvent);
                 });
         assertWithMessage("Invalid exception message")
             .that(exc.getMessage())
             .isEqualTo("Cannot read source file: " + fileName);
 
         final Throwable cause = exc.getCause();
         assertWithMessage("Exception cause has invalid type")
                 .that(cause)
                 .isInstanceOf(FileNotFoundException.class);
         assertWithMessage("Invalid exception message")
             .that(cause)
             .hasMessageThat()
             .isEqualTo(fileName + " (No such file or directory)");
     }
 
     /**
      * Calls the filter with an audit event for a directory and asserts that the filter accepts the
      * event. Some violations can be on a directory instead of a file. Our goal is 100% test
      * coverage and we cannot use
      * {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser} because
      * it is impossible to specify a directory with input file configuration.
      *
      * @throws IOException if an error occurs while formatting the path to the input file.
      */
     @Test
     public void testFilterWithDirectory() throws IOException {
         final SuppressWithNearbyTextFilter filter = new SuppressWithNearbyTextFilter();
         final AuditEvent event = new AuditEvent(this, getPath(""), new Violation(1, 1,
                 "bundle", "key", null, SeverityLevel.ERROR, "moduleId", getClass(),
                 "customMessage"));
 
         assertWithMessage("filter should accept directory")
                 .that(filter.accept(event))
                 .isTrue();
     }
 
     /**
      * Calls the filter on two consecutive real input files and asserts that the 'suppressions'
      * internal field is cleared after each run.
      * Our goal is 100% test coverage and we need access to the implementation details
      * so {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser} is not used.
      *
      * @throws IOException if an error occurs while formatting the path to the input file.
      */
     @Test
     public void testSuppressionsAreClearedEachRun() throws IOException {
         final SuppressWithNearbyTextFilter filter = new SuppressWithNearbyTextFilter();
 
         final List<?> suppressions1 = getSuppressionsAfterExecution(filter,
                 getPath("InputSuppressWithNearbyTextFilterDefaultConfig.java"));
         assertWithMessage("Invalid suppressions size")
                 .that(suppressions1)
                 .hasSize(3);
 
         final List<?> suppressions2 = getSuppressionsAfterExecution(filter,
                 getPath("InputSuppressWithNearbyTextFilterOneLineText.txt"));
         assertWithMessage("Invalid suppressions size")
                 .that(suppressions2)
                 .isEmpty();
     }
 
     /**
      * Calls the filter on two consecutive real input files and asserts that the
      * 'cachedFileAbsolutePath' internal field has changed after the first run.
      * Our goal is 100% test coverage and we need access to the implementation details
      * so {@link AbstractModuleTestSupport#verifyFilterWithInlineConfigParser} is not used.
      *
      * @throws IOException if an error occurs while formatting the path to the input file.
      */
     @Test
     public void testCachedFileAbsolutePathHasChangedEachRun() throws IOException {
         final SuppressWithNearbyTextFilter filter = new SuppressWithNearbyTextFilter();
 
         final String cachedFileAbsolutePath1 = getCachedFileAbsolutePathAfterExecution(filter,
                 getPath("InputSuppressWithNearbyTextFilterDefaultConfig.java"));
         final String cachedFileAbsolutePath2 = getCachedFileAbsolutePathAfterExecution(filter,
                 getPath("InputSuppressWithNearbyTextFilterOneLineText.txt"));
 
         assertWithMessage("cachedFileAbsolutePath has not changed")
                 .that(cachedFileAbsolutePath1)
                 .isNotEqualTo(cachedFileAbsolutePath2);
     }
 
     /**
      * Calls the filter with a real input file and returns a list of identified suppressions.
      *
      * @return {@code Suppression} list.
      */
     private static List<?> getSuppressionsAfterExecution(SuppressWithNearbyTextFilter filter,
                                                          String filename) {
         final AuditEvent dummyEvent = buildDummyAuditEvent(filename);
         filter.accept(dummyEvent);
         return TestUtil.getInternalState(filter, "suppressions", List.class);
     }
 
     /**
      * Calls the filter with a real input file and returns the
      * state of the 'cachedFileAbsolutePath' field.
      *
      * @return {@code cachedFileAbsolutePath} value.
      */
     private static String getCachedFileAbsolutePathAfterExecution(SuppressWithNearbyTextFilter
                                                                            filter,
                                                                   String filename) {
         final AuditEvent dummyEvent = buildDummyAuditEvent(filename);
         filter.accept(dummyEvent);
         return TestUtil.getInternalState(filter, "cachedFileAbsolutePath", String.class);
     }
 
     /**
      * Builds a dummy audit event with a violation for the given file name.
      *
      * @param filename input file name.
      * @return dummy {@code AuditEvent} instance.
      */
     private static AuditEvent buildDummyAuditEvent(String filename) {
         final Violation violation = new Violation(1, null, null,
                 null, null, Object.class, null);
         return new AuditEvent("", filename, violation);
     }
 
     private static String getLineLengthCheckMessage(int expectedLength, int actualLength) {
         return getCheckMessage(LineLengthCheck.class, MSG_KEY, expectedLength, actualLength);
     }
 
     private static String getRegexpSinglelineCheckMessage() {
         final String msgRegexExceeded = "regexp.exceeded";
         return getCheckMessage(RegexpSinglelineCheck.class,
                 msgRegexExceeded, REGEXP_SINGLELINE_CHECK_FORMAT);
     }
 }