Add working test example to app

App/CMakeLists.txt

@@ -5,4 +5,5 @@ project ("App")
 enable_testing()
 
 add_subdirectory(App)
-add_subdirectory(AppLib)
+add_subdirectory(AppLib)
+add_subdirectory(Tests)

App/Tests/CMakeLists.txt

@@ -1,25 +1,21 @@
 cmake_minimum_required (VERSION 3.8)
 
-# Add source to this project's executable.
-
-file(GLOB SRCS "src/*.cpp")
-file(GLOB_RECURSE HDRS "include/*.hh")
-
-
-add_library(AppLib
-  ${SRCS}
-  ${HDRS}
-)
-
-target_include_directories(AppLib PUBLIC "${CMAKE_SOURCE_DIR}/AppLib/include/AppLib")
-
 enable_testing()
 
+add_executable(
+  AppTest
+  MathTest.cpp
+)
+
 find_package(GTest CONFIG REQUIRED)
 target_link_libraries(AppTest PRIVATE GTest::gtest GTest::gtest_main GTest::gmock GTest::gmock_main)
 
-add_test(AllTestsInMain AppTest)
 
 if (CMAKE_VERSION VERSION_GREATER 3.12)
   set_property(TARGET AppLib PROPERTY CXX_STANDARD 20)
 endif()
+
+include(GoogleTest)
+gtest_discover_tests(AppTest)
+
+add_test(MathTest AppTest)

App/Tests/MathTest.cpp

@@ -0,0 +1,16 @@
+#include <gtest/gtest.h>
+
+// Demonstrate some basic assertions.
+TEST(AppTest, BasicAssertions) {
+  // Expect two strings not to be equal.
+  EXPECT_STRNE("hello", "world");
+  // Expect equality.
+  EXPECT_EQ(7 * 6, 42);
+}
+
+
+int main(int argc, char** argv)
+{
+    ::testing::InitGoogleTest(&argc, argv);
+    return RUN_ALL_TESTS();
+}