sanpwc commented on code in PR #2227:
URL: https://github.com/apache/ignite-3/pull/2227#discussion_r1236601472


##########
modules/metastorage/src/test/java/org/apache/ignite/internal/metastorage/server/BasicOperationsKeyValueStorageTest.java:
##########
@@ -190,6 +192,67 @@ void getWithRevisionBound() {
         assertFalse(key3EntryBounded5.empty());
     }
 
+    @Test
+    void getEntriesWithRevisionLowerUpperBound() {
+        byte[] key1 = key(1);
+        byte[] key2 = key(2);
+
+        byte[] val1 = keyValue(1, 1);
+        byte[] val2 = keyValue(1, 2);
+        byte[] val3 = keyValue(2, 3);
+        byte[] val4 = keyValue(1, 4);
+        byte[] val5 = keyValue(1, 5);
+        byte[] val6 = keyValue(2, 6);
+        byte[] val7 = keyValue(2, 7);
+        byte[] val8 = keyValue(1, 8);
+        byte[] val9 = keyValue(1, 9);
+
+        assertEquals(0, storage.revision());
+        assertEquals(0, storage.updateCounter());
+
+        putToMs(key1, val1);
+        putToMs(key1, val2);
+        putToMs(key2, val3);
+        putToMs(key1, val4);
+        putToMs(key1, val5);
+        putToMs(key2, val6);
+        putToMs(key2, val7);
+        putToMs(key1, val8);
+        putToMs(key1, val9);
+
+        assertEquals(9, storage.revision());
+        assertEquals(9, storage.updateCounter());
+
+        List<Entry> entries1 = storage.getEntries(key1, 2, 5);

Review Comment:
   It's difficult to understand which test scenarios are assumed here. Please 
add comments that will explain the details. Also seems that some tests are 
missing for example ones that will return empty list if there are no data in 
proposed revisions boundaries.



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