Preparing sources and tests for CI

CMakeLists.txt

@@ -1,6 +1,22 @@
 cmake_minimum_required(VERSION 3.15)
-project(Hillnes)
-
 set(CMAKE_CXX_STANDARD 20)
 
-add_executable(Hillnes main.cpp)
+# set the project name
+project(ComSquare)
+
+# show compilation warnings
+add_compile_options(-W -Wall -Wextra -Wshadow)
+
+if (TEST)
+    # make unit tests
+    add_executable(unit_tests sources/hello.cpp tests/test_test.cpp)
+
+    # include criterion & coverage
+    target_link_libraries(unit_tests criterion -lgcov)
+    target_compile_options(unit_tests PUBLIC -fprofile-arcs -ftest-coverage -g -O0)
+
+else (TEST)
+    # make app
+    add_executable(ComSquare sources/main.cpp sources/hello.cpp)
+
+endif (TEST)

sources/hello.cpp

@@ -1,6 +1,7 @@
 #include <iostream>
 
-int main() {
+int HelloWorld(void)
+{
     std::cout << "Hello, World!" << std::endl;
     return 0;
-}
+}

sources/main.cpp

@@ -0,0 +1,6 @@
+int HelloWorld(void);
+
+int main(void)
+{
+    return HelloWorld();
+}

tests/hello.cpp

@@ -0,0 +1,10 @@
+#include <criterion/criterion.h>
+
+int HelloWorld(void);
+
+Test(HelloWorld, hello)
+{
+    int result = HelloWorld();
+
+    cr_assert_eq(result, 0);
+}