init

test/CMakeLists.txt

@@ -0,0 +1,7 @@
+find_package(Catch2 3 REQUIRED)
+
+add_executable(test test.cpp)
+
+target_link_libraries(test PRIVATE Catch2::Catch2WithMain)
+
+target_link_libraries(test PRIVATE src)

test/Catch2

@@ -0,0 +1 @@
+Subproject commit 3013cb897b5706e8532507cb2b6ac33e1fc35d93

test/test.cpp

@@ -0,0 +1,10 @@
+#include <catch2/catch_test_macros.hpp>
+#include "library.h"
+
+TEST_CASE("This test should pass") {
+    REQUIRE(hello() == 0);
+}
+
+TEST_CASE("This test should fail") {
+    REQUIRE(hello() == 1);
+}