IVGCVSW-6382 Add Concat operator support to ONNX parser

Signed-off-by: Narumol Prangnawarat <narumol.prangnawarat@arm.com>
Change-Id: I435723160e9b639a70e0b48ee9d722d306461291
diff --git a/src/armnnOnnxParser/test/Concat.cpp b/src/armnnOnnxParser/test/Concat.cpp
new file mode 100644
index 0000000..85ebcc3
--- /dev/null
+++ b/src/armnnOnnxParser/test/Concat.cpp
@@ -0,0 +1,274 @@
+//
+// Copyright © 2021 Arm Ltd and Contributors. All rights reserved.
+// SPDX-License-Identifier: MIT
+//
+
+#include "armnnOnnxParser/IOnnxParser.hpp"
+#include "ParserPrototxtFixture.hpp"
+#include "OnnxParserTestUtils.hpp"
+
+TEST_SUITE("OnnxParser_Concat")
+{
+
+struct ConcatFixture : public armnnUtils::ParserPrototxtFixture<armnnOnnxParser::IOnnxParser>
+{
+    ConcatFixture(const std::string& axis,
+                  const std::vector<int>& input0Shape,
+                  const std::vector<int>& input1Shape,
+                  const std::vector<int>& outputShape)
+    {
+        m_Prototext = R"(
+                    ir_version: 8
+                    producer_name: "onnx-example"
+                    graph {
+                      node {
+                        input: "Input0"
+                        input: "Input1"
+                        output: "Output"
+                        op_type: "Concat"
+                        attribute {
+                          name: "axis"
+                          i: )" + axis + R"(
+                          type: INT
+                        }
+                      }
+                      name: "concat-model"
+                      input {
+                        name: "Input0"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              )" + armnnUtils::ConstructTensorShapeString(input0Shape) + R"(
+                            }
+                          }
+                        }
+                      }
+                      input {
+                        name: "Input1"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              )" + armnnUtils::ConstructTensorShapeString(input1Shape) + R"(
+                            }
+                          }
+                        }
+                      }
+                      output {
+                        name: "Output"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              )" + armnnUtils::ConstructTensorShapeString(outputShape) + R"(
+                            }
+                          }
+                        }
+                      }
+                    })";
+        Setup();
+    }
+};
+
+struct ConcatAxis0Fixture : ConcatFixture
+{
+    ConcatAxis0Fixture() : ConcatFixture("0", { 1, 3, 2, 5 }, { 1, 3, 2, 5 }, { 2, 3, 2, 5 }) {}
+};
+
+struct ConcatAxis1Fixture : ConcatFixture
+{
+    ConcatAxis1Fixture() : ConcatFixture("1", { 2, 2, 1, 3 }, { 2, 1, 1, 3 }, { 2, 3, 1, 3 }) {}
+};
+
+struct ConcatAxis2Fixture : ConcatFixture
+{
+    ConcatAxis2Fixture() : ConcatFixture("2", { 2, 3, 1, 1 }, { 2, 3, 2, 1 }, { 2, 3, 3, 1 }) {}
+};
+
+struct ConcatAxis3Fixture : ConcatFixture
+{
+    ConcatAxis3Fixture() : ConcatFixture("3", { 1, 3, 2, 2 }, { 1, 3, 2, 2 }, { 1, 3, 2, 4 }) {}
+};
+
+struct ConcatNegativeAxisFixture : ConcatFixture
+{
+    ConcatNegativeAxisFixture() : ConcatFixture("-1", { 1, 2, 5 }, { 1, 2, 3 }, { 1, 2, 8 }) {}
+};
+
+TEST_CASE_FIXTURE(ConcatAxis0Fixture, "ConcatAxis0Test")
+{
+    RunTest<4, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f,
+                                    6.0f, 7.0f, 8.0f, 9.0f, 10.0f,
+                                    11.0f, 12.0f, 13.0f, 14.0f, 15.0f,
+                                    16.0f, 17.0f, 18.0f, 19.0f, 20.0f,
+                                    21.0f, 22.0f, 23.0f, 24.0f, 25.0f,
+                                    26.0f, 27.0f, 28.0f, 29.0f, 30.0f }},
+                       {"Input1", { 31.0f, 32.0f, 33.0f, 34.0f, 35.0f,
+                                    36.0f, 37.0f, 38.0f, 39.0f, 40.0f,
+                                    41.0f, 42.0f, 43.0f, 44.0f, 45.0f,
+                                    46.0f, 47.0f, 48.0f, 49.0f, 50.0f,
+                                    51.0f, 52.0f, 53.0f, 54.0f, 55.0f,
+                                    56.0f, 57.0f, 58.0f, 59.0f, 60.0f }}},
+                      {{"Output", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f,
+                                    6.0f, 7.0f, 8.0f, 9.0f, 10.0f,
+                                    11.0f, 12.0f, 13.0f, 14.0f, 15.0f,
+                                    16.0f, 17.0f, 18.0f, 19.0f, 20.0f,
+                                    21.0f, 22.0f, 23.0f, 24.0f, 25.0f,
+                                    26.0f, 27.0f, 28.0f, 29.0f, 30.0f,
+                                    31.0f, 32.0f, 33.0f, 34.0f, 35.0f,
+                                    36.0f, 37.0f, 38.0f, 39.0f, 40.0f,
+                                    41.0f, 42.0f, 43.0f, 44.0f, 45.0f,
+                                    46.0f, 47.0f, 48.0f, 49.0f, 50.0f,
+                                    51.0f, 52.0f, 53.0f, 54.0f, 55.0f,
+                                    56.0f, 57.0f, 58.0f, 59.0f, 60.0f }}});
+}
+
+TEST_CASE_FIXTURE(ConcatAxis1Fixture, "ConcatAxis1est")
+{
+    RunTest<4, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f }},
+                       {"Input1", { 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f }}},
+                      {{"Output", { 1.0f, 2.0f, 3.0f,
+                                    4.0f, 5.0f, 6.0f,
+                                    13.0f, 14.0f, 15.0f,
+                                    7.0f, 8.0f, 9.0f,
+                                    10.0f, 11.0f, 12.0f,
+                                    16.0f, 17.0f, 18.0f }}});
+}
+
+TEST_CASE_FIXTURE(ConcatAxis2Fixture, "ConcatAxis2Test")
+{
+    RunTest<4, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f }},
+                       {"Input1", { 7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f }}},
+                      {{"Output", { 1.0f, 7.0f, 8.0f,
+                                    2.0f, 9.0f, 10.0f,
+                                    3.0f, 11.0f, 12.0f,
+                                    4.0f, 13.0f, 14.0f,
+                                    5.0f, 15.0f, 16.0f,
+                                    6.0f, 17.0f, 18.0f }}});
+}
+
+TEST_CASE_FIXTURE(ConcatAxis3Fixture, "ConcatAxis3Test")
+{
+    RunTest<4, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f,
+                                    7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f }},
+                       {"Input1", { 13.0f, 14.0f, 15.0f, 16.0f, 17.0f, 18.0f,
+                                    19.0f, 20.0f, 21.0f, 22.0f, 23.0f, 24.0f }}},
+                      {{"Output", { 1.0f, 2.0f, 13.0f, 14.0f,
+                                    3.0f, 4.0f, 15.0f, 16.0f,
+                                    5.0f, 6.0f, 17.0f, 18.0f,
+                                    7.0f, 8.0f, 19.0f, 20.0f,
+                                    9.0f, 10.0f, 21.0f, 22.0f,
+                                    11.0f, 12.0f, 23.0f, 24.0f }}});
+}
+
+TEST_CASE_FIXTURE(ConcatNegativeAxisFixture, "ConcatNegativeAxisTest")
+{
+    RunTest<3, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f,
+                                    6.0f, 7.0f, 8.0f, 9.0f, 10.0f }},
+                       {"Input1", { 11.0f, 12.0f, 13.0f, 14.0f, 15.0f, 16.0f }}},
+                      {{"Output", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 11.0f, 12.0f, 13.0f,
+                                    6.0f, 7.0f, 8.0f, 9.0f, 10.0f, 14.0f, 15.0f, 16.0f }}});
+}
+
+struct ConcatMultipleInputsFixture : public armnnUtils::ParserPrototxtFixture<armnnOnnxParser::IOnnxParser>
+{
+    ConcatMultipleInputsFixture()
+    {
+        m_Prototext = R"(
+                    ir_version: 8
+                    producer_name: "onnx-example"
+                    graph {
+                      node {
+                        input: "Input0"
+                        input: "Input1"
+                        input: "Input2"
+                        output: "Output"
+                        op_type: "Concat"
+                        attribute {
+                          name: "axis"
+                          i: 1
+                          type: INT
+                        }
+                      }
+                      name: "concat-model"
+                      input {
+                        name: "Input0"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              dim {
+                                dim_value: 3
+                              }
+                              dim {
+                                dim_value: 2
+                              }
+                            }
+                          }
+                        }
+                      }
+                      input {
+                        name: "Input1"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              dim {
+                                dim_value: 3
+                              }
+                              dim {
+                                dim_value: 3
+                              }
+                            }
+                          }
+                        }
+                      }
+                      input {
+                        name: "Input2"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              dim {
+                                dim_value: 3
+                              }
+                              dim {
+                                dim_value: 1
+                              }
+                            }
+                          }
+                        }
+                      }
+                      output {
+                        name: "Output"
+                        type {
+                          tensor_type {
+                            elem_type: 1
+                            shape {
+                              dim {
+                                dim_value: 3
+                              }
+                              dim {
+                                dim_value: 6
+                              }
+                            }
+                          }
+                        }
+                      }
+                    })";
+        Setup();
+    }
+};
+
+TEST_CASE_FIXTURE(ConcatMultipleInputsFixture, "ConcatMultipleInputsTest")
+{
+    RunTest<2, float>({{"Input0", { 1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f }},
+                       {"Input1", { 7.0f, 8.0f, 9.0f, 10.0f, 11.0f, 12.0f, 13.0f, 14.0f, 15.0f }},
+                       {"Input2", { 16.0f, 17.0f, 18.0f }}},
+                      {{"Output", { 1.0f, 2.0f, 7.0f, 8.0f, 9.0f, 16.0f,
+                                    3.0f, 4.0f, 10.0f, 11.0f, 12.0f, 17.0f,
+                                    5.0f, 6.0f, 13.0f, 14.0f, 15.0f, 18.0f }}});
+}
+
+}