diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..935ba6e
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "lib/catch2"]
+	path = lib/catch2
+	url = https://github.com/catchorg/Catch2.git
diff --git a/CMakeLists.txt b/CMakeLists.txt
index 41926ef..5b53caf 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,3 +1,5 @@
+# Copyright (c) Lysann Tranvouez.  All rights reserved.
+
 cmake_minimum_required(VERSION 3.29)
 project(mach_detours C CXX)
 
@@ -26,3 +28,11 @@ add_executable(mach_detours_sample
 target_link_libraries(mach_detours_sample
         PRIVATE mach_detours
 )
+
+
+add_subdirectory(lib/catch2)
+add_executable(mach_detours_tests
+        tests/test.cpp)
+target_link_libraries(mach_detours_tests
+        PRIVATE Catch2::Catch2WithMain mach_detours
+)
diff --git a/lib/catch2 b/lib/catch2
new file mode 160000
index 0000000..b3fb4b9
--- /dev/null
+++ b/lib/catch2
@@ -0,0 +1 @@
+Subproject commit b3fb4b9feafcd8d91c5cb510a4775143fdbef02f
diff --git a/tests/test.cpp b/tests/test.cpp
new file mode 100644
index 0000000..b8e5087
--- /dev/null
+++ b/tests/test.cpp
@@ -0,0 +1 @@
+// Copyright (c) Lysann Tranvouez.  All rights reserved.