Jut setting all up for the calculator

test/CMakeLists.txt

@@ -0,0 +1,10 @@
+find_package(cmocka REQUIRED)
+
+add_executable(test_parser test_parser.c)
+
+target_link_libraries(test_parser
+    calculator_lib
+    cmocka::cmocka
+)
+
+add_test(NAME parser_tests COMMAND test_parser)

test/test_parser.c

@@ -0,0 +1,5 @@
+#include <stdlib.h>
+
+int main() {
+    return EXIT_SUCCESS;
+}