diff --git a/tests/src/test/scala/ai/rapids/spark/GpuUnitTests.scala b/tests/src/test/scala/ai/rapids/spark/GpuUnitTests.scala
index 3da37a308d6..99b9c7a6694 100644
--- a/tests/src/test/scala/ai/rapids/spark/GpuUnitTests.scala
+++ b/tests/src/test/scala/ai/rapids/spark/GpuUnitTests.scala
@@ -97,46 +97,51 @@ class GpuUnitTests extends SparkQueryCompareTestSuite {
        "types should be the same")
     withResource(expected.copyToHost()) { hostExpected =>
       withResource(result.copyToHost()) { hostResult =>
-        for (row <- 0 until result.getRowCount().toInt) {
-          assert(hostExpected.isNullAt(row) == hostResult.isNullAt(row),
-            "expected and actual differ at " + row + " one of them isn't null")
-          if (!hostExpected.isNullAt(row)) {
-            result.getBase.getType() match {
-              case INT8 | BOOL8 =>
-                assert(hostExpected.getByte(row) == hostResult.getByte(row), "row " + row)
-              case INT16 =>
-                assert(hostExpected.getShort(row) == hostResult.getShort(row), "row " + row)
-
-              case INT32 | TIMESTAMP_DAYS =>
-                assert(hostExpected.getInt(row) == hostResult.getInt(row), "row " + row)
-
-              case INT64 | TIMESTAMP_MICROSECONDS | TIMESTAMP_MILLISECONDS | TIMESTAMP_NANOSECONDS |
-                   TIMESTAMP_SECONDS =>
-                assert(hostExpected.getLong(row) == hostResult.getLong(row), "row " + row)
-
-              case FLOAT32 =>
-                assert(compare(hostExpected.getFloat(row), hostResult.getFloat(row),
-                  0.0001), "row " + row)
-
-              case FLOAT64 =>
-                assert(compare(hostExpected.getDouble(row), hostResult.getDouble(row),
-                  0.0001), "row " + row)
-
-              case STRING =>
-                assert(hostExpected.getUTF8String(row) == hostResult.getUTF8String(row),
-                  "row " + row)
-
-              case _ =>
-                throw new IllegalArgumentException(hostResult.getBase.getType() +
-                    " is not supported yet")
-            }
-          }
-        }
+        check(result, hostExpected, hostResult)
       }
     }
     true
   }
 
+  private def check(result: GpuColumnVector, hostExpected: RapidsHostColumnVector,
+     hostResult: RapidsHostColumnVector) = {
+    for (row <- 0 until result.getRowCount().toInt) {
+      assert(hostExpected.isNullAt(row) == hostResult.isNullAt(row),
+        "expected and actual differ at " + row + " one of them isn't null")
+      if (!hostExpected.isNullAt(row)) {
+        result.getBase.getType() match {
+          case INT8 | BOOL8 =>
+            assert(hostExpected.getByte(row) == hostResult.getByte(row), "row " + row)
+          case INT16 =>
+            assert(hostExpected.getShort(row) == hostResult.getShort(row), "row " + row)
+
+          case INT32 | TIMESTAMP_DAYS =>
+            assert(hostExpected.getInt(row) == hostResult.getInt(row), "row " + row)
+
+          case INT64 | TIMESTAMP_MICROSECONDS | TIMESTAMP_MILLISECONDS | TIMESTAMP_NANOSECONDS |
+               TIMESTAMP_SECONDS =>
+            assert(hostExpected.getLong(row) == hostResult.getLong(row), "row " + row)
+
+          case FLOAT32 =>
+            assert(compare(hostExpected.getFloat(row), hostResult.getFloat(row),
+              0.0001), "row " + row)
+
+          case FLOAT64 =>
+            assert(compare(hostExpected.getDouble(row), hostResult.getDouble(row),
+              0.0001), "row " + row)
+
+          case STRING =>
+            assert(hostExpected.getUTF8String(row) == hostResult.getUTF8String(row),
+              "row " + row)
+
+          case _ =>
+            throw new IllegalArgumentException(hostResult.getBase.getType() +
+                " is not supported yet")
+        }
+      }
+    }
+  }
+
   protected def evaluateWithoutCodegen(gpuExpression: GpuExpression,
      inputBatch: ColumnarBatch = EmptyBatch): GpuColumnVector = {
     gpuExpression.foreach {