[ompTest] Adds initial unit tests w/ gTest

Enable unit testing of ompTest library to guarantee functioning
correctly. This is mostly important for the comparison operators. Since
they are used to determine if records match during ompTest test
execution.

Change-Id: I00ba95cec9b96afb63ad642fc093680df66ee0b2

Author: jplehr

offload/test/ompTest/CMakeLists.txt

@@ -10,6 +10,8 @@ endif()
 
 option(LIBOMPTEST_USE_GOOGLETEST "If set to 'ON' build ompTest upon GoogleTest, otherwise 'standalone'." OFF)
 
+option(LIBOMPTEST_BUILD_UNITTESTS "Build unit tests for ompTest, requires GoogleTest" OFF)
+
 cmake_minimum_required(VERSION 3.22)
 project(omptest LANGUAGES CXX)
 
@@ -59,6 +61,13 @@ target_include_directories(omptest
   ${LIBOMPTARGET_INCLUDE_DIR}
 )
 
+if(LIBOMPTEST_BUILD_UNITTESTS)
+  include(GoogleTest)
+  add_executable(omptest-unittests test/main-test.cpp)
+  target_link_libraries(omptest-unittests omptest)
+  target_link_libraries(omptest-unittests gtest gtest_main)
+endif()
+
 # Include local include directory, so we do not need relative paths
 include_directories(./include)
 target_compile_features(omptest PRIVATE cxx_std_17)

offload/test/ompTest/test/main-test.cpp

@@ -0,0 +1,26 @@
+#include "OmptAssertEvent.h"
+#include <omp-tools.h>
+
+#include "gtest/gtest.h"
+
+TEST(CompareOperatorTests, BufferRecordIdentity) {
+
+  using namespace omptest;
+
+  // Default, no time limit or anything
+  auto BRDflt = OmptAssertEvent::BufferRecord("dflt", "", ObserveState::always,
+                                              ompt_callback_target_submit);
+
+  // Minimum time set, no max time
+  auto BRMinSet = OmptAssertEvent::BufferRecord(
+      "minset", "", ObserveState::always, ompt_callback_target_submit, 10);
+
+  // Minimum time and maximum time set
+  auto BRMinMaxSet =
+      OmptAssertEvent::BufferRecord("minmaxset", "", ObserveState::always,
+                                    ompt_callback_target_submit, {10, 100});
+
+  ASSERT_EQ(BRDflt, BRDflt);
+  ASSERT_EQ(BRMinSet, BRMinSet);
+  ASSERT_EQ(BRMinMaxSet, BRMinMaxSet);
+}