Run onnxruntime_provider_test with example_plugin_ep in CI (#26214)

### Description
<!-- Describe your changes. -->

- Add test dynamic plugin EP configuration setting to skip specific
tests.
- Run test in x64 Windows Release CI build.

### Motivation and Context
<!-- - Why is this change required? What problem does it solve?
- If it fixes an open issue, please link to the issue here. -->

Enable more testing of plugin EP in CI build.

Author: edgchen1

.github/workflows/windows_x64_release_build_x64_release.yml

@@ -98,6 +98,34 @@ jobs:
           ALLOW_RELEASED_ONNX_OPSET_ONLY: '0'
           DocUpdateNeeded: 'false'
 
+      - name: Run onnxruntime_provider_test with example_plugin_ep
+        shell: pwsh
+        run: |
+          # Note on skipped tests:
+          # The skipped tests are either:
+          # - relying on CPU EP fallback for BFloat16 which is not supported
+          # - testing the LayerNormalization contrib op with mixed input/output types (only supported by a few EPs)
+          # Some other hardcoded EP types are skipped in these tests. For a plugin EP, we skip these tests by
+          # specifying them in the dynamic plugin EP configuration.
+
+          $env:ORT_UNIT_TEST_MAIN_DYNAMIC_PLUGIN_EP_CONFIG_JSON = @"
+          {
+            "ep_library_registration_name": "example_ep",
+            "ep_library_path": "./example_plugin_ep.dll",
+            "selected_ep_name": "example_ep",
+            "tests_to_skip": [
+              "LayerNormTest.LayerNorm_BFloat16Input",
+              "LayerNormTest.LayerNorm_Scale_Float16Input",
+              "LayerNormTest.LayerNorm_Scale_Float16ScaleOutput",
+              "LayerNormTest.LayerNorm_Scale_Bias_Float16Input",
+              "LayerNormTest.LayerNorm_Scale_Bias_Float16ScaleBiasOutput"
+            ]
+          }
+          "@
+
+          .\onnxruntime_provider_test.exe
+        working-directory: ${{ github.workspace }}\build\RelWithDebInfo\RelWithDebInfo
+
       - name: Validate C# native delegates
         shell: cmd
         run: python tools\ValidateNativeDelegateAttributes.py

onnxruntime/core/optimizer/transformer_memcpy.cc

@@ -250,8 +250,11 @@ static const IExecutionProvider* FindProviderByType(ProviderTypeToProviderMap pr
 
 bool TransformerMemcpyImpl::IsNodeCompatibleWithProvider(const onnxruntime::Node& node) const {
   const auto& node_provider_type = node.GetExecutionProviderType();
+  ORT_ENFORCE(!node_provider_type.empty(),
+              "Provider type for ", node.OpType(), " node with name '", node.Name(), "' is not set.");
   const auto* node_provider = FindProviderByType(providers_by_type_, node_provider_type);
-  ORT_ENFORCE(node_provider != nullptr, "Unable to get provider associated with provider type ", node_provider_type);
+  ORT_ENFORCE(node_provider != nullptr,
+              "Unable to get provider associated with provider type '", node_provider_type, "'.");
 
   // Same provider?
   if (node_provider->Type() == provider_.Type()) {

onnxruntime/test/unittest_main/test_main.cc

@@ -3,8 +3,10 @@
 
 #include <algorithm>
 #include <cstdlib>
+#include <memory>
 #include <optional>
 #include <string>
+#include <vector>
 #ifdef _WIN32
 #include <iostream>
 #include <locale>
@@ -35,6 +37,7 @@
 
 #if defined(TEST_MAIN_ENABLE_DYNAMIC_PLUGIN_EP_USAGE)
 #include "test/unittest_util/test_dynamic_plugin_ep.h"
+#include "test/util/include/skipping_test_listener.h"
 #endif  // defined(TEST_MAIN_ENABLE_DYNAMIC_PLUGIN_EP_USAGE)
 
 std::unique_ptr<Ort::Env> ort_env;
@@ -107,6 +110,19 @@ extern "C" void ortenv_teardown() {
   ort_env.reset();
 }
 
+static std::vector<std::unique_ptr<::testing::TestEventListener>> MakeTestEventListeners() {
+  std::vector<std::unique_ptr<::testing::TestEventListener>> result{};
+#if defined(TEST_MAIN_ENABLE_DYNAMIC_PLUGIN_EP_USAGE)
+  {
+    namespace dynamic_plugin_ep_infra = onnxruntime::test::dynamic_plugin_ep_infra;
+    const auto tests_to_skip = dynamic_plugin_ep_infra::GetTestsToSkip();
+    auto skipping_test_listener = std::make_unique<onnxruntime::test::SkippingTestListener>(tests_to_skip);
+    result.emplace_back(std::move(skipping_test_listener));
+  }
+#endif
+  return result;
+}
+
 #ifdef USE_TENSORRT
 
 #if defined(_MSC_VER)
@@ -152,6 +168,14 @@ int TEST_MAIN(int argc, char** argv) {
     ortenv_setup();
     ::testing::InitGoogleTest(&argc, argv);
 
+    {
+      auto& test_listeners = ::testing::UnitTest::GetInstance()->listeners();
+      auto test_listeners_to_add = MakeTestEventListeners();
+      for (auto& test_listener_to_add : test_listeners_to_add) {
+        test_listeners.Append(test_listener_to_add.release());
+      }
+    }
+
     status = RUN_ALL_TESTS();
   }
   ORT_CATCH(const std::exception& ex) {

onnxruntime/test/unittest_util/test_dynamic_plugin_ep.cc

@@ -90,6 +90,7 @@ Status ParseInitializationConfig(std::string_view json_str, InitializationConfig
     config.selected_ep_name = parsed_json.value<decltype(config.selected_ep_name)>("selected_ep_name", {});
     config.selected_ep_device_indices =
         parsed_json.value<decltype(config.selected_ep_device_indices)>("selected_ep_device_indices", {});
+    config.tests_to_skip = parsed_json.value<decltype(config.tests_to_skip)>("tests_to_skip", {});
 
     config_out = std::move(config);
     return Status::OK();
@@ -198,4 +199,12 @@ std::optional<std::string> GetEpName() {
   return g_plugin_ep_infrastructure_state->ep_name;
 }
 
+std::vector<std::string> GetTestsToSkip() {
+  if (!IsInitialized()) {
+    return {};
+  }
+
+  return g_plugin_ep_infrastructure_state->config.tests_to_skip;
+}
+
 }  // namespace onnxruntime::test::dynamic_plugin_ep_infra

onnxruntime/test/unittest_util/test_dynamic_plugin_ep.h

@@ -46,6 +46,10 @@ struct InitializationConfig {
   std::vector<size_t> selected_ep_device_indices{};
 
   std::map<std::string, std::string> default_ep_options{};
+
+  // Specifies any tests to skip.
+  // Tests should be specified by full name, i.e., "<test suite name>.<test name>".
+  std::vector<std::string> tests_to_skip{};
 };
 
 // Parses `InitializationConfig` from JSON.
@@ -75,6 +79,9 @@ std::unique_ptr<IExecutionProvider> MakeEp(const logging::Logger* logger = nullp
 // Gets the dynamic plugin EP name, or `std::nullopt` if uninitialized.
 std::optional<std::string> GetEpName();
 
+// Gets the list of tests to skip, or an empty list if uninitialized.
+std::vector<std::string> GetTestsToSkip();
+
 }  // namespace dynamic_plugin_ep_infra
 }  // namespace test
 }  // namespace onnxruntime

onnxruntime/test/util/include/skipping_test_listener.h

@@ -0,0 +1,33 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License.
+
+#pragma once
+
+#include <string>
+#include <unordered_set>
+
+#include "gsl/gsl"
+
+#include "gtest/gtest.h"
+
+namespace onnxruntime::test {
+
+// A test event listener that skips the specified tests.
+class SkippingTestListener : public ::testing::EmptyTestEventListener {
+ public:
+  explicit SkippingTestListener(gsl::span<const std::string> tests_to_skip)
+      : tests_to_skip_(tests_to_skip.begin(), tests_to_skip.end()) {
+  }
+
+ private:
+  void OnTestStart(const ::testing::TestInfo& test_info) override {
+    const auto full_test_name = std::string(test_info.test_suite_name()) + "." + test_info.name();
+    if (tests_to_skip_.find(full_test_name) != tests_to_skip_.end()) {
+      GTEST_SKIP();
+    }
+  }
+
+  std::unordered_set<std::string> tests_to_skip_;
+};
+
+}  // namespace onnxruntime::test