[MO] Add support to moc_frontend of ":" as delimiter for --input and --output (#6543)

* [MO] Add support to moc_frontend of ":" as delimiter for --input

Additions:
Changed default logic for 'Place::get_in(out)put_port' to return nullptr
Changed default logic for 'InputModel::get_place_by_tensor(operation)_name' to return nullptr

* Corrected comments in code

* Missing empty line

* Clang format fixes

* Fix review comments

* Updated test to verify review comments fixes

* Update unit tests after rebase

* Apply review comments

model-optimizer/mo/front/extractor.py

@@ -451,6 +451,17 @@ def extract_node_attrs(graph: Graph, extractor: callable):
     return graph
 
 
+def raise_no_node(node_name: str):
+    raise Error('No node with name {}'.format(node_name))
+
+
+def raise_node_name_collision(node_name: str, found_nodes: list):
+    raise Error('Name collision was found, there are several nodes for mask "{}": {}. '
+                'If your intention was to specify port for node, please instead specify node names connected to '
+                'this port. If your intention was to specify the node name, please add port to the node '
+                'name'.format(node_name, found_nodes))
+
+
 def get_node_id_with_ports(graph: Graph, node_name: str, skip_if_no_port=True):
     """
     Extracts port and node ID out of user provided name
@@ -483,12 +494,9 @@ def get_node_id_with_ports(graph: Graph, node_name: str, skip_if_no_port=True):
 
             found_names.append((in_port, out_port, name))
     if len(found_names) == 0:
-        raise Error('No node with name {}'.format(node_name))
+        raise_no_node(node_name)
     if len(found_names) > 1:
-        raise Error('Name collision was found, there are several nodes for mask "{}": {}. '
+        raise_node_name_collision(node_name, [name for _, _, name in found_names])
-                    'If your intention was to specify port for node, please instead specify node names connected to '
-                    'this port. If your intention was to specify the node name, please add port to the node '
-                    'name'.format(node_name, [name for _, _, name in found_names]))
     in_port, out_port, name = found_names[0]
     node_id = graph.get_node_id_by_name(name)
     if in_port is not None:

model-optimizer/mo/moc_frontend/extractor.py

@@ -1,35 +1,75 @@
 # Copyright (C) 2018-2021 Intel Corporation
 # SPDX-License-Identifier: Apache-2.0
 
-import logging as log
 import re
-from collections import defaultdict
-from copy import copy
-
-import numpy as np
 
+from mo.front.extractor import raise_no_node, raise_node_name_collision
 from mo.utils.error import Error
 
 from ngraph.frontend import InputModel  # pylint: disable=no-name-in-module,import-error
 
+import numpy as np
+
 
 def decode_name_with_port(input_model: InputModel, node_name: str):
     """
     Decode name with optional port specification w/o traversing all the nodes in the graph
-    TODO: in future node_name can specify input/output port groups and indices (58562)
+    TODO: in future node_name can specify input/output port groups as well as indices (58562)
     :param input_model: Input Model
     :param node_name: user provided node name
     :return: decoded place in the graph
     """
-    # Check exact match with one of the names in the graph first
+    found_nodes = []
+    found_node_names = []
+
     node = input_model.get_place_by_tensor_name(node_name)
     if node:
-        return node
+        found_node_names.append('Tensor:' + node_name)
+        found_nodes.append(node)
+
+    node = input_model.get_place_by_operation_name(node_name)
+    if node:
+        found_node_names.append('Operation:' + node_name)
+        found_nodes.append(node)
+
+    regexp_post = r'(.+):(\d+)'
+    match_post = re.search(regexp_post, node_name)
+    if match_post:
+        node_post = input_model.get_place_by_operation_name(match_post.group(1))
+        if node_post:
+            node_post = node_post.get_output_port(
+                outputPortIndex=int(match_post.group(2)))
+            if node_post:
+                found_node_names.append(match_post.group(1))
+                found_nodes.append(node_post)
+
+    regexp_pre = r'(\d+):(.+)'
+    match_pre = re.search(regexp_pre, node_name)
+    if match_pre:
+        node_pre = input_model.get_place_by_operation_name(match_pre.group(2))
+        if node_pre:
+            node_pre = node_pre.get_input_port(
+                inputPortIndex=int(match_pre.group(1)))
+            if node_pre:
+                found_node_names.append(match_pre.group(2))
+                found_nodes.append(node_pre)
+
+    if len(found_nodes) == 0:
+        raise_no_node(node_name)
+
+    # Check that there is no collision, all found places shall point to same data
+    if not all([n.is_equal_data(found_nodes[0]) for n in found_nodes]):
+        raise_node_name_collision(node_name, found_node_names)
+
+    # TODO: ONNX specific (59408)
+    # To comply with legacy behavior, for ONNX-only there shall be considered additional 2 possibilities
+    # 1) "abc:1" - get_place_by_tensor_name("abc").get_producing_operation().get_output_port(1)
+    # 2) "1:abc" - get_place_by_tensor_name("abc").get_producing_operation().get_input_port(1)
+    # This logic is not going to work with other frontends
 
     # TODO: Add support for input/output group name and port index here (58562)
-    # Legacy frontends use format "number:name:number" to specify input and output port indices
+    # For new frontends logic shall be extended to additionally support input and output group names
-    # For new frontends this logic shall be extended to additionally support input and output group names
+    return found_nodes[0]
-    raise Error('There is no node with name {}'.format(node_name))
 
 
 def fe_input_user_data_repack(input_model: InputModel, input_user_shapes: [None, list, dict, np.ndarray],

model-optimizer/unit_tests/mo/frontend_ngraph_test.py

@@ -34,6 +34,15 @@ def test_frontends():
     assert not status.returncode
 
 
+def test_moc_extractor():
+    setup_env()
+    args = [sys.executable, '-m', 'pytest',
+            os.path.join(os.path.dirname(__file__), 'moc_frontend/moc_extractor_test_actual.py'), '-s']
+
+    status = subprocess.run(args, env=os.environ)
+    assert not status.returncode
+
+
 def test_main_test():
     setup_env()
     args = [sys.executable, '-m', 'pytest',

model-optimizer/unit_tests/mo/moc_frontend/moc_extractor_test_actual.py

@@ -0,0 +1,246 @@
+# Copyright (C) 2018-2021 Intel Corporation
+# SPDX-License-Identifier: Apache-2.0
+
+import unittest
+
+from mo.moc_frontend.extractor import decode_name_with_port
+from mo.utils.error import Error
+
+import pytest
+
+
+mock_available = True
+
+try:
+    # pylint: disable=no-name-in-module,import-error
+    from mock_mo_python_api import get_model_statistic, get_place_statistic, \
+        clear_frontend_statistic, clear_model_statistic, clear_place_statistic, \
+        clear_setup, set_equal_data, set_max_port_counts
+
+    # pylint: disable=no-name-in-module,import-error
+    from ngraph.frontend import FrontEndManager
+
+except Exception:
+    print("No mock frontend API available,"
+          "ensure to use -DENABLE_TESTS=ON option when running these tests")
+    mock_available = False
+
+# FrontEndManager shall be initialized and destroyed after all tests finished
+# This is because destroy of FrontEndManager will unload all plugins,
+# no objects shall exist after this
+if mock_available:
+    fem = FrontEndManager()
+
+mock_needed = pytest.mark.skipif(not mock_available,
+                                 reason="mock MO fe is not available")
+
+
+class TestMainFrontend(unittest.TestCase):
+    def setUp(self):
+        clear_frontend_statistic()
+        clear_model_statistic()
+        clear_place_statistic()
+        clear_setup()
+        set_max_port_counts(10, 10)
+        self.fe = fem.load_by_framework('mock_mo_ngraph_frontend')
+        self.model = self.fe.load('abc.bin')
+
+    # Mock model has 'tensor' tensor place
+    @mock_needed
+    def test_decode_name_with_port_tensor(self):
+        node = decode_name_with_port(self.model, "tensor")
+        model_stat = get_model_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 1
+        assert node
+
+    # Mock model has 'operation' operation place
+    @mock_needed
+    def test_decode_name_with_port_op(self):
+        node = decode_name_with_port(self.model, "operation")
+        model_stat = get_model_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 1
+        assert node
+
+    # pylint: disable=wrong-spelling-in-comment
+    # Mock model doesn't have 'mocknoname' place
+    @mock_needed
+    def test_decode_name_with_port_noname(self):
+        with self.assertRaisesRegex(Error, 'No\\ node\\ with\\ name.*mocknoname*'):
+            decode_name_with_port(self.model, 'mocknoname')
+        model_stat = get_model_statistic()
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 1
+
+    # Mock model has both tensor and operation with same name and non-equal data
+    # Collision is expected
+    @mock_needed
+    def test_decode_name_with_port_collision_op_tensor(self):
+        with self.assertRaisesRegex(Error, 'Name\\ collision.*tensorAndOp*'):
+            decode_name_with_port(self.model, 'tensorAndOp')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 1
+        assert place_stat.is_equal_data > 0
+
+    # Mock model has 'operation' and output port up to 10
+    @mock_needed
+    def test_decode_name_with_port_delim_op_out(self):
+        node = decode_name_with_port(self.model, 'operation:7')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_output_port == 1
+        assert place_stat.lastArgInt == 7
+        assert node
+
+    # Mock model has 'operation' and input port up to 10
+    @mock_needed
+    def test_decode_name_with_port_delim_op_in(self):
+        node = decode_name_with_port(self.model, '7:operation')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_input_port == 1
+        assert place_stat.lastArgInt == 7
+        assert node
+
+    # Mock model has 'operation' and 'operation:0' op places, collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_op_collision_out(self):
+        with self.assertRaisesRegex(Error, 'Name\\ collision(?!.*Tensor.*).*operation\\:0*'):
+            decode_name_with_port(self.model, 'operation:0')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.is_equal_data > 0
+        assert place_stat.get_output_port == 1
+        assert place_stat.lastArgInt == 0
+
+    # Mock model has 'operation' and '0:operation' op places, collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_op_collision_in(self):
+        with self.assertRaisesRegex(Error, 'Name\\ collision(?!.*Tensor.*).*0\\:operation*'):
+            decode_name_with_port(self.model, '0:operation')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.is_equal_data > 0
+        assert place_stat.get_input_port == 1
+        assert place_stat.lastArgInt == 0
+
+    # Mock model has 'tensor' and 'tensor:0' tensor places, no collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_tensor_no_collision_out(self):
+        node = decode_name_with_port(self.model, 'tensor:0')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_output_port == 0
+        assert node
+
+    # Mock model has 'tensor' and '0:tensor' tensor places, no collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_tensor_no_collision_in(self):
+        node = decode_name_with_port(self.model, '0:tensor')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_input_port == 0
+        assert node
+
+    # Mock model doesn't have such '1234:operation' or output port=1234 for 'operation'
+    @mock_needed
+    def test_decode_name_with_port_delim_no_port_out(self):
+        with self.assertRaisesRegex(Error, 'No\\ node\\ with\\ name.*operation\\:1234*'):
+            decode_name_with_port(self.model, 'operation:1234')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_output_port == 1
+        assert place_stat.lastArgInt == 1234
+
+    # Mock model doesn't have such '1234:operation' or input port=1234 for 'operation'
+    @mock_needed
+    def test_decode_name_with_port_delim_no_port_in(self):
+        with self.assertRaisesRegex(Error, 'No\\ node\\ with\\ name.*1234\\:operation*'):
+            decode_name_with_port(self.model, '1234:operation')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_input_port == 1
+        assert place_stat.lastArgInt == 1234
+
+    # Mock model has tensor with name 'conv2d:0' and operation 'conv2d' with output port = 1
+    # It is setup to return 'is_equal_data=True' for these tensor and port
+    # So no collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_equal_data_out(self):
+        set_equal_data('conv2d', 'conv2d')
+        node = decode_name_with_port(self.model, 'conv2d:0')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_output_port == 1
+        assert place_stat.is_equal_data > 0
+        assert node
+
+    # Mock model has tensor with name '0:conv2d' and operation 'conv2d' with input port = 1
+    # It is setup to return 'is_equal_data=True' for these tensor and port
+    # So no collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_equal_data_in(self):
+        set_equal_data('conv2d', 'conv2d')
+        node = decode_name_with_port(self.model, '0:conv2d')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 2
+        assert place_stat.get_input_port == 1
+        assert place_stat.is_equal_data > 0
+        assert node
+
+    # Stress case: Mock model has:
+    # Tensor '8:9'
+    # Operation '8:9'
+    # Operation '8' with output port = 9
+    # Operation '9' with input port = 8
+    # All places point to same data - no collision is expected
+    @mock_needed
+    def test_decode_name_with_port_delim_all_same_data(self):
+        set_equal_data('8', '9')
+        node = decode_name_with_port(self.model, '8:9')
+        model_stat = get_model_statistic()
+        place_stat = get_place_statistic()
+
+        assert model_stat.get_place_by_tensor_name == 1
+        assert model_stat.get_place_by_operation_name == 3
+        assert place_stat.get_input_port == 1
+        assert place_stat.get_output_port == 1
+        # At least 3 comparisons of places are expected
+        assert place_stat.is_equal_data > 2
+        assert node

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_ngraph_frontend/mock_mo_frontend.cpp

@@ -14,6 +14,11 @@ FeStat FrontEndMockPy::m_stat = {};
 ModelStat InputModelMockPy::m_stat = {};
 PlaceStat PlaceMockPy::m_stat = {};
 
+std::string MockSetup::m_equal_data_node1 = {};
+std::string MockSetup::m_equal_data_node2 = {};
+int MockSetup::m_max_input_port_index = 0;
+int MockSetup::m_max_output_port_index = 0;
+
 PartialShape InputModelMockPy::m_returnShape = {};
 
 extern "C" MOCK_API FrontEndVersion GetAPIVersion()

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_ngraph_frontend/mock_mo_frontend.hpp

@@ -21,6 +21,35 @@ using namespace ngraph;
 using namespace ngraph::frontend;
 
 ////////////////////////////////
+/// \brief This structure holds number static setup values
+/// It will be used by Python unit tests to setup particular mock behavior
+struct MOCK_API MockSetup
+{
+    static std::string m_equal_data_node1;
+    static std::string m_equal_data_node2;
+    static int m_max_input_port_index;
+    static int m_max_output_port_index;
+
+    static void clear_setup()
+    {
+        m_equal_data_node1 = {};
+        m_equal_data_node2 = {};
+        m_max_input_port_index = 0;
+        m_max_output_port_index = 0;
+    }
+
+    static void set_equal_data(const std::string& node1, const std::string& node2)
+    {
+        m_equal_data_node1 = node1;
+        m_equal_data_node2 = node2;
+    }
+
+    static void set_max_port_counts(int max_input, int max_output)
+    {
+        m_max_input_port_index = max_input;
+        m_max_output_port_index = max_output;
+    }
+};
 
 /// \brief This structure holds number of calls of particular methods of Place objects
 /// It will be used by Python unit tests to verify that appropriate API
@@ -33,6 +62,7 @@ struct MOCK_API PlaceStat
     int m_is_input = 0;
     int m_is_output = 0;
     int m_is_equal = 0;
+    int m_is_equal_data = 0;
 
     // Arguments tracking
     std::string m_lastArgString;
@@ -46,6 +76,7 @@ struct MOCK_API PlaceStat
     int is_input() const { return m_is_input; }
     int is_output() const { return m_is_output; }
     int is_equal() const { return m_is_equal; }
+    int is_equal_data() const { return m_is_equal_data; }
 
     // Arguments getters
     std::string get_lastArgString() const { return m_lastArgString; }
@@ -60,10 +91,14 @@ class MOCK_API PlaceMockPy : public Place
 {
     static PlaceStat m_stat;
     std::string m_name;
+    bool m_is_op = false;
+    int m_portIndex = -1;
 
 public:
-    PlaceMockPy(const std::string& name = {})
+    PlaceMockPy(const std::string& name = {}, bool is_op = false, int portIndex = -1)
         : m_name(name)
+        , m_is_op(is_op)
+        , m_portIndex(portIndex)
     {
     }
 
@@ -84,7 +119,11 @@ public:
     {
         m_stat.m_get_input_port++;
         m_stat.m_lastArgInt = inputPortIndex;
-        return std::make_shared<PlaceMockPy>();
+        if (inputPortIndex < MockSetup::m_max_input_port_index)
+        {
+            return std::make_shared<PlaceMockPy>(m_name, false, inputPortIndex);
+        }
+        return nullptr;
     }
 
     Place::Ptr get_input_port(const std::string& inputName) const override
@@ -114,7 +153,11 @@ public:
     {
         m_stat.m_get_output_port++;
         m_stat.m_lastArgInt = outputPortIndex;
-        return std::make_shared<PlaceMockPy>();
+        if (outputPortIndex < MockSetup::m_max_output_port_index)
+        {
+            return std::make_shared<PlaceMockPy>(m_name, false, outputPortIndex);
+        }
+        return nullptr;
     }
 
     Place::Ptr get_output_port(const std::string& outputName) const override
@@ -149,7 +192,27 @@ public:
     {
         m_stat.m_is_equal++;
         m_stat.m_lastArgPlace = another;
-        return m_name == another->get_names().at(0);
+        std::shared_ptr<PlaceMockPy> mock = std::dynamic_pointer_cast<PlaceMockPy>(another);
+        return m_name == mock->m_name && m_is_op == mock->m_is_op &&
+               m_portIndex == mock->m_portIndex;
+    }
+
+    bool is_equal_data(Ptr another) const override
+    {
+        m_stat.m_is_equal_data++;
+        m_stat.m_lastArgPlace = another;
+        std::shared_ptr<PlaceMockPy> mock = std::dynamic_pointer_cast<PlaceMockPy>(another);
+        if (!MockSetup::m_equal_data_node1.empty() && !MockSetup::m_equal_data_node2.empty())
+        {
+            if ((mock->m_name.find(MockSetup::m_equal_data_node1) != std::string::npos ||
+                 mock->m_name.find(MockSetup::m_equal_data_node2) != std::string::npos) &&
+                (m_name.find(MockSetup::m_equal_data_node1) != std::string::npos ||
+                 m_name.find(MockSetup::m_equal_data_node2) != std::string::npos))
+            {
+                return true;
+            }
+        }
+        return mock->m_is_op == m_is_op;
     }
 
     //---------------Stat--------------------
@@ -167,6 +230,7 @@ struct MOCK_API ModelStat
     int m_get_inputs = 0;
     int m_get_outputs = 0;
     int m_get_place_by_tensor_name = 0;
+    int m_get_place_by_operation_name = 0;
     int m_set_partial_shape = 0;
     int m_get_partial_shape = 0;
     int m_set_element_type = 0;
@@ -190,6 +254,7 @@ struct MOCK_API ModelStat
     int extract_subgraph() const { return m_extract_subgraph; }
     int override_all_inputs() const { return m_override_all_inputs; }
     int override_all_outputs() const { return m_override_all_outputs; }
+    int get_place_by_operation_name() const { return m_get_place_by_operation_name; }
     int get_place_by_tensor_name() const { return m_get_place_by_tensor_name; }
     int set_partial_shape() const { return m_set_partial_shape; }
     int get_partial_shape() const { return m_get_partial_shape; }
@@ -208,12 +273,31 @@ struct MOCK_API ModelStat
 /// \brief Mock implementation of InputModel
 /// Every call increments appropriate counters in statistic and stores argument values to statistics
 /// as well
-/// ("mock_output1", "mock_output2")
 class MOCK_API InputModelMockPy : public InputModel
 {
     static ModelStat m_stat;
     static PartialShape m_returnShape;
 
+    std::set<std::string> m_operations = {
+        "8", "9", "8:9", "operation", "operation:0", "0:operation", "tensorAndOp", "conv2d"};
+    std::set<std::string> m_tensors = {"8:9",
+                                       "tensor",
+                                       "tensor:0",
+                                       "0:tensor",
+                                       "tensorAndOp",
+                                       "conv2d:0",
+                                       "0:conv2d",
+                                       "mock_input1",
+                                       "mock_input2",
+                                       "newInput1",
+                                       "newIn1",
+                                       "newIn2",
+                                       "mock_output1",
+                                       "mock_output2",
+                                       "new_output2",
+                                       "newOut1",
+                                       "newOut2"};
+
 public:
     std::vector<Place::Ptr> get_inputs() const override
     {
@@ -229,12 +313,27 @@ public:
                 std::make_shared<PlaceMockPy>("mock_output2")};
     }
 
+    Place::Ptr get_place_by_operation_name(const std::string& opName) const override
+    {
+        m_stat.m_get_place_by_operation_name++;
+        m_stat.m_lastArgString = opName;
+        if (m_operations.count(opName))
+        {
+            return std::make_shared<PlaceMockPy>(opName, true);
+        }
+        return nullptr;
+    }
+
     Place::Ptr get_place_by_tensor_name(const std::string& tensorName) const override
     {
         m_stat.m_get_place_by_tensor_name++;
         m_stat.m_lastArgString = tensorName;
+        if (m_tensors.count(tensorName))
+        {
             return std::make_shared<PlaceMockPy>(tensorName);
         }
+        return nullptr;
+    }
 
     void override_all_outputs(const std::vector<Place::Ptr>& outputs) override
     {
@@ -319,7 +418,7 @@ public:
 
     static void clear_stat() { m_stat = {}; }
 
-protected:
+private:
     InputModel::Ptr load_impl(const std::vector<std::shared_ptr<Variant>>& params) const override
     {
         if (params.size() > 0 && is_type<VariantWrapper<std::string>>(params[0]))

model-optimizer/unit_tests/mock_mo_frontend/mock_mo_python_api/mock_mo_python_api.cpp

@@ -21,6 +21,13 @@ static void register_mock_frontend_stat(py::module m)
     feStat.def_property_readonly("convert_model", &FeStat::convert_model);
 }
 
+static void register_mock_setup(py::module m)
+{
+    m.def("clear_setup", &MockSetup::clear_setup);
+    m.def("set_equal_data", &MockSetup::set_equal_data);
+    m.def("set_max_port_counts", &MockSetup::set_max_port_counts);
+}
+
 static void register_mock_model_stat(py::module m)
 {
     m.def("get_model_statistic", &InputModelMockPy::get_stat);
@@ -30,6 +37,8 @@ static void register_mock_model_stat(py::module m)
     py::class_<ModelStat> mdlStat(m, "ModelStat", py::dynamic_attr());
     mdlStat.def_property_readonly("get_inputs", &ModelStat::get_inputs);
     mdlStat.def_property_readonly("get_outputs", &ModelStat::get_outputs);
+    mdlStat.def_property_readonly("get_place_by_operation_name",
+                                  &ModelStat::get_place_by_operation_name);
     mdlStat.def_property_readonly("get_place_by_tensor_name", &ModelStat::get_place_by_tensor_name);
 
     mdlStat.def_property_readonly("set_partial_shape", &ModelStat::set_partial_shape);
@@ -66,12 +75,14 @@ static void register_mock_place_stat(py::module m)
     placeStat.def_property_readonly("is_input", &PlaceStat::is_input);
     placeStat.def_property_readonly("is_output", &PlaceStat::is_output);
     placeStat.def_property_readonly("is_equal", &PlaceStat::is_equal);
+    placeStat.def_property_readonly("is_equal_data", &PlaceStat::is_equal_data);
 }
 
 PYBIND11_MODULE(mock_mo_python_api, m)
 {
     m.doc() = "Mock frontend call counters for testing Pyngraph frontend bindings";
     register_mock_frontend_stat(m);
+    register_mock_setup(m);
     register_mock_model_stat(m);
     register_mock_place_stat(m);
 }

ngraph/frontend/frontend_manager/include/frontend_manager/input_model.hpp

@@ -69,13 +69,14 @@ namespace ngraph
             /// \brief Returns a tensor place by a tensor name following framework conventions, or
             /// nullptr if a tensor with this name doesn't exist.
             /// \param tensor_name Name of tensor
-            /// \return Tensor place corresponding to specifed tensor name
+            /// \return Tensor place corresponding to specified tensor name or nullptr if not exists
             virtual Place::Ptr get_place_by_tensor_name(const std::string& tensor_name) const;
 
             /// \brief Returns an operation place by an operation name following framework
-            /// conventions, or nullptr if an operation with this name doesn't exist. \param
+            /// conventions, or nullptr if an operation with this name doesn't exist.
-            /// operation_name Name of operation \return Place representing operation
+            /// \param operation_name Name of operation
-            virtual Place::Ptr get_place_by_operation_name(const std::string& operation_name);
+            /// \return Place representing operation or nullptr if not exists
+            virtual Place::Ptr get_place_by_operation_name(const std::string& operation_name) const;
 
             /// \brief Returns an input port place by operation name and appropriate port index
             /// \param operation_name Name of operation
@@ -88,7 +89,7 @@ namespace ngraph
             /// \brief Returns an output port place by operation name and appropriate port index
             /// \param operation_name Name of operation
             /// \param output_port_index Index of output port for this operation
-            /// \return Place representing output port of operation
+            /// \return Place representing output port of operation or nullptr if not exists
             virtual Place::Ptr
                 get_place_by_operation_name_and_output_port(const std::string& operation_name,
                                                             int output_port_index);

ngraph/frontend/frontend_manager/include/frontend_manager/place.hpp

@@ -232,14 +232,14 @@ namespace ngraph
             /// \brief For operation node returns reference to an input port; applicable if
             /// operation node has only one input port
             ///
-            /// \return Input port place
+            /// \return Input port place or nullptr if not exists
             virtual Ptr get_input_port() const;
 
             /// \brief For operation node returns reference to an input port with specified index
             ///
             /// \param input_port_index Input port index
             ///
-            /// \return Appropriate input port place
+            /// \return Appropriate input port place or nullptr if not exists
             virtual Ptr get_input_port(int input_port_index) const;
 
             /// \brief For operation node returns reference to an input port with specified name;
@@ -247,7 +247,7 @@ namespace ngraph
             ///
             /// \param input_name Name of port group
             ///
-            /// \return Appropriate input port place
+            /// \return Appropriate input port place or nullptr if not exists
             virtual Ptr get_input_port(const std::string& input_name) const;
 
             /// \brief For operation node returns reference to an input port with specified name and
@@ -257,20 +257,20 @@ namespace ngraph
             ///
             /// \param input_port_index Input port index in a group
             ///
-            /// \return Appropriate input port place
+            /// \return Appropriate input port place or nullptr if not exists
             virtual Ptr get_input_port(const std::string& input_name, int input_port_index) const;
 
             /// \brief For operation node returns reference to an output port; applicable for
             /// operations with only one output port
             ///
-            /// \return Appropriate output port place
+            /// \return Appropriate output port place or nullptr if not exists
             virtual Ptr get_output_port() const;
 
             /// \brief For operation node returns reference to an output port with specified index
             ///
             /// \param output_port_index Output port index
             ///
-            /// \return Appropriate output port place
+            /// \return Appropriate output port place or nullptr if not exists
             virtual Ptr get_output_port(int output_port_index) const;
 
             /// \brief For operation node returns reference to an output port with specified name;
@@ -278,7 +278,7 @@ namespace ngraph
             ///
             /// \param output_name Name of output port group
             ///
-            /// \return Appropriate output port place
+            /// \return Appropriate output port place or nullptr if not exists
             virtual Ptr get_output_port(const std::string& output_name) const;
 
             /// \brief For operation node returns reference to an output port with specified name
@@ -288,7 +288,7 @@ namespace ngraph
             ///
             /// \param output_port_index Output port index
             ///
-            /// \return Appropriate output port place
+            /// \return Appropriate output port place or nullptr if not exists
             virtual Ptr get_output_port(const std::string& output_name,
                                         int output_port_index) const;
 

ngraph/frontend/frontend_manager/src/frontend_manager.cpp

@@ -183,7 +183,7 @@ Place::Ptr InputModel::get_place_by_tensor_name(const std::string& tensor_name)
     return nullptr;
 }
 
-Place::Ptr InputModel::get_place_by_operation_name(const std::string& operation_name)
+Place::Ptr InputModel::get_place_by_operation_name(const std::string& operation_name) const
 {
     return nullptr;
 }

ngraph/python/tests/mock/mock_py_ngraph_frontend/mock_py_frontend.hpp

@@ -334,7 +334,7 @@ public:
         return std::make_shared<PlaceMockPy>();
     }
 
-    Place::Ptr get_place_by_operation_name(const std::string& operationName) override
+    Place::Ptr get_place_by_operation_name(const std::string& operationName) const override
     {
         m_stat.m_get_place_by_operation_name++;
         m_stat.m_lastArgString = operationName;