vigyasharma commented on code in PR #14417:
URL: https://github.com/apache/lucene/pull/14417#discussion_r2015832195


##########
lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java:
##########
@@ -5037,4 +5037,47 @@ public void testDocValuesSkippingIndexWithoutDocValues() 
throws Exception {
       }
     }
   }
+
+  public void testAdvanceSegmentInfosCounter() throws IOException {
+    Directory dir = newDirectory();
+
+    IndexWriter writer;
+    IndexReader reader;
+
+    writer = new IndexWriter(dir, newIndexWriterConfig(new 
MockAnalyzer(random())));
+
+    // add 10 documents
+    for (int i = 0; i < 10; i++) {
+      addDocWithIndex(writer, i);
+      writer.commit();
+    }
+    long beforeAdvanceSegmentCounter = writer.getSegmentInfosCounter();
+    writer.advanceSegmentInfosCounter(1);
+    assertEquals(beforeAdvanceSegmentCounter, writer.getSegmentInfosCounter());
+
+    writer.advanceSegmentInfosCounter(1000);
+    assertEquals(1000, writer.getSegmentInfosCounter());

Review Comment:
   Do we need this check? Let's assert with `gte` to avoid flakiness.



##########
lucene/core/src/test/org/apache/lucene/index/TestIndexWriter.java:
##########
@@ -5037,4 +5037,47 @@ public void testDocValuesSkippingIndexWithoutDocValues() 
throws Exception {
       }
     }
   }
+
+  public void testAdvanceSegmentInfosCounter() throws IOException {
+    Directory dir = newDirectory();
+
+    IndexWriter writer;
+    IndexReader reader;
+
+    writer = new IndexWriter(dir, newIndexWriterConfig(new 
MockAnalyzer(random())));
+
+    // add 10 documents
+    for (int i = 0; i < 10; i++) {
+      addDocWithIndex(writer, i);
+      writer.commit();
+    }
+    long beforeAdvanceSegmentCounter = writer.getSegmentInfosCounter();
+    writer.advanceSegmentInfosCounter(1);
+    assertEquals(beforeAdvanceSegmentCounter, writer.getSegmentInfosCounter());

Review Comment:
   Let's add a similar `gte` check here as in the assert below, instead of 
assuming that counter value is 1.



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