jadami10 commented on code in PR #14385:
URL: https://github.com/apache/pinot/pull/14385#discussion_r1966271342


##########
pinot-core/src/test/java/org/apache/pinot/core/query/optimizer/filter/TimePredicateFilterOptimizerTest.java:
##########
@@ -121,38 +114,79 @@ public void testEpochToEpochDateTimeConvert() {
         new Range(1620833400L, true, null, false));
     testTimeConvert("dateTimeConvert(col, '1:MINUTES:EPOCH', '1:HOURS:EPOCH', 
'30:MINUTES') < 450255",
         new Range(null, false, 27015300L, false));
-    testTimeConvert("dateTimeConvert(col, '1:DAYS:EPOCH', '1:DAYS:EPOCH', 
'30:MINUTES') BETWEEN 18759 AND 18760",
+    testTimeConvert("dateTimeConvert(col, '1:DAYS:EPOCH', '1:DAYS:EPOCH', 
'30:MINUTES') "
+            + "BETWEEN 18759 AND 18760",
         new Range(18759L, true, 18761L, false));
     testTimeConvert("dateTimeConvert(col, '1:DAYS:EPOCH', '1:DAYS:EPOCH', 
'30:MINUTES') = 18759",
         new Range(18759L, true, 18760L, false));
 
     // Invalid time
-    testInvalidTimeConvert("dateTimeConvert(col, '1:SECONDS:EPOCH', 
'1:MINUTES:EPOCH', '30:MINUTES') > 27013846.5");
-    testInvalidTimeConvert("dateTimeConvert(col, '1:SECONDS:EPOCH', 
'30:MINUTES:EPOCH', '30:MINUTES') > 27013846");
+    testInvalidFilterOptimizer("dateTimeConvert(col, '1:SECONDS:EPOCH', 
'1:MINUTES:EPOCH', '30:MINUTES') > 27013846.5");
+    testInvalidFilterOptimizer("dateTimeConvert(col, '1:SECONDS:EPOCH', 
'30:MINUTES:EPOCH', '30:MINUTES') > 27013846");
   }
 
   @Test
   public void testSDFToEpochDateTimeConvert() {
-    testTimeConvert(
-        "dateTimeConvert(col, '1:MILLISECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd 
HH:mm:ss.SSS', '1:MILLISECONDS:EPOCH', "
-            + "'30:MINUTES') > 1620830760000", new Range("2021-05-12 
15:00:00.000", true, null, false));
-    testTimeConvert("dateTimeConvert(col, 
'1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss', '1:MILLISECONDS:EPOCH', "
-        + "'30:MINUTES') < 1620917160000", new Range(null, false, "2021-05-13 
15:00:00", false));
-    testTimeConvert(
-        "dateTimeConvert(col, '1:MINUTES:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm', 
'1:MILLISECONDS:EPOCH', '30:MINUTES') "
-            + "BETWEEN 1620830760000 AND 1620917160000",
-        new Range("2021-05-12 15:00", true, "2021-05-13 15:00", false));
-    testTimeConvert(
-        "dateTimeConvert(col, '1:DAYS:SIMPLE_DATE_FORMAT:yyyy-MM-dd', 
'1:MILLISECONDS:EPOCH', '30:MINUTES') = "
-            + "1620830760000", new Range("2021-05-12", false, "2021-05-12", 
true));
+    testTimeConvert("dateTimeConvert(col, 
'1:MILLISECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss.SSS', '1:MILLISECONDS:"
+        + "EPOCH', '30:MINUTES') > 1620830760000", new Range("2021-05-12 
15:00:00.000", true, null, false));
+    testTimeConvert("dateTimeConvert(col, 
'1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss', '1:MILLISECONDS:EPOCH',"
+        + " '30:MINUTES') < 1620917160000", new Range(null, false, "2021-05-13 
15:00:00", false));
+    testTimeConvert("dateTimeConvert(col, 
'1:MINUTES:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm', '1:MILLISECONDS:EPOCH', "
+        + "'30:MINUTES') BETWEEN 1620830760000 AND 1620917160000", new 
Range("2021-05-12 15:00", true, "2021-05-13 "
+        + "15:00", false));
+    testTimeConvert("dateTimeConvert(col, 
'1:DAYS:SIMPLE_DATE_FORMAT:yyyy-MM-dd', '1:MILLISECONDS:EPOCH', '30:MINUTES')"
+        + " = 1620830760000", new Range("2021-05-12", false, "2021-05-12", 
true));
 
     // Invalid time
-    testInvalidTimeConvert(
-        "dateTimeConvert(col, '1:MILLISECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd 
HH:mm:ss.SSS', '1:MILLISECONDS:EPOCH', "
-            + "'30:MINUTES') > 1620830760000.5");
-    testInvalidTimeConvert(
-        "dateTimeConvert(col, '1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd 
HH:mm:ss', '1:MILLISECONDS:EPOCH', "
-            + "'30:MINUTES') < 1620917160");
+    testInvalidFilterOptimizer("dateTimeConvert(col, 
'1:MILLISECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss.SSS', "
+        + "'1:MILLISECONDS:EPOCH', '30:MINUTES') > 1620830760000.5");
+    testInvalidFilterOptimizer("dateTimeConvert(col, 
'1:SECONDS:SIMPLE_DATE_FORMAT:yyyy-MM-dd HH:mm:ss', "
+        + "'1:MILLISECONDS:EPOCH', '30:MINUTES') < 1620917160");
+  }
+
+
+  @Test
+  public void testDateTruncOptimizer() {
+    testDateTrunc("datetrunc('DAY', col) = 1620777600000", new 
Range("1620777600000", true, "1620863999999", true));

Review Comment:
   totally fine to do in another PR. but I would still add the "this does not 
work" unit test now to make this behavior clear



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