Issue #41: add Violation Comment validation

Author: Anmol202005

src/test/java/org/checkstyle/autofix/RemoveViolationComments.java

@@ -73,10 +73,19 @@ public Space visitSpace(Space space, Space.Location loc, ExecutionContext ctx) {
             else {
                 result = space.withComments(filteredComments);
                 if (!suffixAccumulator.isEmpty()) {
-                    result = result.withWhitespace(suffixAccumulator.toString());
+                    if (filteredComments.isEmpty()) {
+                        // All comments were violation comments - add to whitespace
+                        result = result.withWhitespace(suffixAccumulator.toString());
+                    } else {
+                        // Add suffix to last remaining comment
+                        Comment lastComment = filteredComments.get(filteredComments.size() - 1);
+                        filteredComments.set(filteredComments.size() - 1,
+                                lastComment.withSuffix(lastComment.getSuffix() + suffixAccumulator.toString()));
+                        result = space.withComments(filteredComments);
+                    }
                 }
             }
             return super.visitSpace(result, loc, ctx);
         }
     }
-}
+}

src/test/java/org/checkstyle/autofix/RemoveViolationCommentsTest.java

@@ -0,0 +1,41 @@
+package org.checkstyle.autofix;
+
+import org.junit.jupiter.api.Test;
+import org.openrewrite.test.RecipeSpec;
+import org.openrewrite.test.RewriteTest;
+
+import static org.openrewrite.java.Assertions.java;
+
+class RemoveViolationCommentsTest implements RewriteTest {
+
+    @Override
+    public void defaults(RecipeSpec spec) {
+        spec.recipe(new RemoveViolationComments());
+    }
+
+    @Test
+    void removesViolationComments() {
+        rewriteRun(
+                java(
+                        """
+                        package org.checkstyle.autofix;
+                        public class Test {
+                        int a;  //hloo
+                        //violation
+                        int b;
+                        int c;    //violation
+                        }
+                        """,
+                        """
+                        package org.checkstyle.autofix;
+                        public class Test {
+                        int a;  //hloo
+                        
+                        int b;
+                        int c;
+                        }
+                        """
+                )
+        );
+    }
+}

src/test/java/org/checkstyle/autofix/recipe/AbstractRecipeTestSupport.java

@@ -73,8 +73,7 @@ protected void verify(String testCaseName) throws Exception {
         final Recipe mainRecipe = createRecipe(violations);
 
         testRecipe(beforeCode, expectedAfterCode,
-                getPath(inputPath), new InputClassRenamer(),
-                new RemoveViolationComments(), mainRecipe);
+                getPath(inputPath), new InputClassRenamer(), mainRecipe, new RemoveViolationComments());
     }
 
     private List<CheckstyleViolation> runCheckstyle(String inputPath,