Add simplified header test for Identity (#1625)

* Add simplified header test for Identity

Co-authored-by: Anton Kolesnyk <antkmsft@users.noreply.github.com>

CMakeLists.txt

@@ -44,6 +44,8 @@ if(BUILD_TESTING)
     if(DEFINED ENV{AZURE_CORE_ENABLE_JSON_TESTS})
       add_subdirectory(sdk/core/azure-core/test/nlohmann-json-test)
     endif()
+
+    add_subdirectory(sdk/identity/azure-identity/test)
 endif()
 
 # compiler warning flags globally

sdk/identity/azure-identity/test/CMakeLists.txt

@@ -0,0 +1,45 @@
+# Copyright (c) Microsoft Corporation. All rights reserved.
+# SPDX-License-Identifier: MIT
+
+cmake_minimum_required (VERSION 3.13)
+
+set(azure-identity-test)
+
+project (azure-identity-test LANGUAGES CXX)
+set(CMAKE_CXX_STANDARD 14)
+set(CMAKE_CXX_STANDARD_REQUIRED True)
+
+include(GoogleTest)
+
+add_executable (
+  azure-identity-test
+    main.cpp
+    simplified_header.cpp
+)
+
+if (MSVC)
+  # Disable warnings:
+  # - C26495: Variable
+  #             - 'testing::internal::Mutex::critical_section_'
+  #             - 'testing::internal::Mutex::critical_section_init_phase_'
+  #             - 'testing::internal::Mutex::owner_thread_id_'
+  #             - 'testing::internal::Mutex::type_'
+  #           is uninitialized. Always initialize member variables (type.6).
+  # - C26812: The enum type
+  #             - 'testing::internal::Mutex::StaticConstructorSelector'
+  #             - 'testing::TestPartResult::Type'
+  #           is unscoped. Prefer 'enum class' over 'enum' (Enum.3)
+  target_compile_options(azure-identity-test PUBLIC /wd26495 /wd26812)
+endif()
+
+# Adding private headers from identity to the tests so we can test the private APIs with no relative paths include.
+target_include_directories (azure-identity-test PRIVATE $<BUILD_INTERFACE:${CMAKE_CURRENT_SOURCE_DIR}/../../src>)
+
+target_link_libraries(azure-identity-test PRIVATE azure-identity gtest gmock)
+
+# gtest_discover_tests will scan the test from azure-identity-test and call add_test
+# for each test to ctest. This enables `ctest -r` to run specific tests directly.
+gtest_discover_tests(azure-identity-test
+     TEST_PREFIX azure-identity.
+     NO_PRETTY_TYPES
+     NO_PRETTY_VALUES)

sdk/identity/azure-identity/test/main.cpp

@@ -0,0 +1,11 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+#include <gtest/gtest.h>
+
+int main(int argc, char** argv)
+{
+  testing::InitGoogleTest(&argc, argv);
+  auto r = RUN_ALL_TESTS();
+  return r;
+}

sdk/identity/azure-identity/test/simplified_header.cpp

@@ -0,0 +1,23 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+/**
+ * @brief makes sure azure/identity.hpp can be included.
+ *
+ * @remark This file will catch any issue while trying to use/include the identity.hpp header
+ *
+ */
+
+#include <azure/identity.hpp>
+#include <gtest/gtest.h>
+
+class DllExportTest {
+  AZ_IDENTITY_DLLEXPORT static const bool DllExportHIncluded;
+};
+
+TEST(SimplifiedHeader, identity)
+{
+  EXPECT_NO_THROW(Azure::Identity::ClientSecretCredential clientSecretCredential("", "", ""));
+  EXPECT_NO_THROW(Azure::Identity::EnvironmentCredential environmentCredential);
+  EXPECT_NO_THROW(Azure::Identity::Details::Version::VersionString());
+}