test: add case where there is no difference in bytecode

src/test/java/io/github/algomaster99/bytecode/diff/visitor/ClassFileVisitorTest.java

@@ -190,6 +190,24 @@ void gumtreeShowsDifferenceBetween_stringConcatenationJEP280() throws IOExceptio
                 List<Action> rootOperations = diff.getRootOperations();
                 assertThat(rootOperations).size().isEqualTo(21);
             }
+
+            @Test
+            void shouldShowNoDifferenceInBytecode() throws IOException {
+                // arrange
+                Path oldClass = EQ_SAMECOMP
+                        .resolve("176701")
+                        .resolve("oraclejdk-11.0.19")
+                        .resolve("JavaLanguageParser$AnnotationConstantRestContext.class");
+                Path newClass = EQ_SAMECOMP
+                        .resolve("176701")
+                        .resolve("oraclejdk-17.0.7")
+                        .resolve("JavaLanguageParser$AnnotationConstantRestContext.class");
+                DiffImpl diff = getDiff(oldClass, newClass);
+
+                // assert
+                List<Action> rootOperations = diff.getRootOperations();
+                assertThat(rootOperations).size().isEqualTo(0);
+            }
         }
     }
 

src/test/resources/EQ/SameComp/176701/README.md

@@ -0,0 +1,4 @@
+There is no difference between the two files.
+Diffoscope show the difference between constant pool only.
+
+Gumtree wins here.