Complete support for Gtest.

.gitignore

@@ -33,3 +33,6 @@
 
 # Build directory
 build/
+
+# Externals directory
+externals/

CMakeLists.txt

@@ -143,5 +143,5 @@ option(HELLO_HIP_BUILD_TESTS
 # Subdirectories for examples, testing and documentation
 if(HELLO_HIP_BUILD_TESTS)
   include(${PROJECT_SOURCE_DIR}/cmake/FetchGoogleTest.cmake)
-#   add_subdirectory(unittests)
+  add_subdirectory(unittests)
 endif(HELLO_HIP_BUILD_TESTS)

unittests/CMakeLists.txt

@@ -0,0 +1,28 @@
+# begin /* Add unit tests */
+set(UNITTEST_SOURCES
+  hello_test.cxx
+)
+
+foreach(SOURCE IN LISTS UNITTEST_SOURCES)
+  set_source_files_properties(${SOURCE} 
+    PROPERTIES 
+      LANGUAGE HIP
+  )
+  get_filename_component(TEST_NAME ${SOURCE} NAME_WLE)
+  add_executable(${TEST_NAME} ${SOURCE})
+  target_link_libraries(${TEST_NAME} 
+    PRIVATE hello_hip
+    PRIVATE gtest::main
+  )
+
+  set_target_properties(${TEST_NAME}
+    PROPERTIES
+      CXX_STANDARD 17
+      HIP_STANDARD 17
+      HIP_ARCHITECTURES ${CMAKE_HIP_ARCHITECTURES}
+  )
+
+  add_test(NAME test_${TEST_NAME} COMMAND ${TEST_NAME})
+  message(STATUS "Unit Test Added: ${TEST_NAME}")
+endforeach()
+# end /* Add unit tests */

unittests/hello_test.cxx

@@ -0,0 +1,6 @@
+#include "hello_hip.hxx"
+#include "gtest/gtest.h"
+
+TEST(HIP, HelloWorld) {
+  EXPECT_EQ(1, 1);
+}