diff --git a/inference-engine/tests/ie_test_utils/common_test_utils/ngraph_test_utils.cpp b/inference-engine/tests/ie_test_utils/common_test_utils/ngraph_test_utils.cpp
index 867c921c53e..4b8873a8062 100644
--- a/inference-engine/tests/ie_test_utils/common_test_utils/ngraph_test_utils.cpp
+++ b/inference-engine/tests/ie_test_utils/common_test_utils/ngraph_test_utils.cpp
@@ -139,6 +139,10 @@ private:
     ///
     Result compare(ngraph::Node* node1, ngraph::Node* node2, std::ostream& err_log);
 
+    void compare_inputs(ngraph::Node* node1, ngraph::Node* node2, std::ostream& err_log);
+
+    void compare_outputs(ngraph::Node* node1, ngraph::Node* node2, std::ostream& err_log);
+
     void add_nodes_inputs_to_queue(ngraph::Node* node1, ngraph::Node* node2);
 
     //-- DATA --
@@ -1360,7 +1364,9 @@ Comparator::Result Comparator::compare(
     auto subgraph1 = dynamic_cast<ngraph::op::util::SubGraphOp*>(node1);
     auto subgraph2 = dynamic_cast<ngraph::op::util::SubGraphOp*>(node2);
 
-    if (subgraph1 && subgraph2) {
+    const bool subgraph_nodes = subgraph1 && subgraph2;
+
+    if (subgraph_nodes) {
         const auto result = subgraph::compare_io(subgraph1, subgraph2);
         if (!result.valid) {
             return result;
@@ -1388,6 +1394,23 @@ Comparator::Result Comparator::compare(
             name(node1) + " and " + to_str(node2->inputs().size()) + " for " + name(node2));
     }
 
+    if (!subgraph_nodes) {
+        compare_inputs(node1, node2, err_log);
+        compare_outputs(node1, node2, err_log);
+    }
+
+    if (should_compare(CmpValues::ATTRIBUTES)) {
+        const auto result = attributes::compare(node1, node2, m_comparition_flags);
+        if (!result.valid) {
+            return result;
+        }
+    }
+
+    return Result::ok("Check if any minor error was log in to err_log");
+}
+
+
+void Comparator::compare_inputs(ngraph::Node* node1, ngraph::Node* node2, std::ostream& err_log) {
     for (size_t i = 0; i < node1->inputs().size(); ++i) {
         if (should_compare(CmpValues::CONST_VALUES)) {
             using Constant = ngraph::opset1::Constant;
@@ -1435,7 +1458,9 @@ Comparator::Result Comparator::compare(
                     << std::endl;
         }
     }
+}
 
+void Comparator::compare_outputs(ngraph::Node* node1, ngraph::Node* node2, std::ostream& err_log) {
     for (int i = 0; i < node1->outputs().size(); ++i) {
         const auto& tensor1 = node1->output(i).get_tensor();
         const auto& tensor2 = node2->output(i).get_tensor();
@@ -1455,15 +1480,6 @@ Comparator::Result Comparator::compare(
                     << i << ") " << node2->output(i).get_partial_shape() << std::endl;
         }
     }
-
-    if (should_compare(CmpValues::ATTRIBUTES)) {
-        const auto result = attributes::compare(node1, node2, m_comparition_flags);
-        if (!result.valid) {
-            return result;
-        }
-    }
-
-    return Result::ok("Check if any minor error was log in to err_log");
 }
 
 void Comparator::add_nodes_inputs_to_queue(ngraph::Node* node1, ngraph::Node* node2) {