diff --git a/CMakeLists.txt b/CMakeLists.txt
index 4be6a1e..b038d98 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -3,14 +3,18 @@ project(t3dsr C)
 
 set(CMAKE_C_STANDARD 17)
 
-# if microsoft compilation
-if (MSVC)
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} /W4")
-else()
-    set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Wall -Wextra -pedantic")
-endif()
-
 file(GLOB_RECURSE SOURCES CONFIGURE_DEPENDS src/*.c)
 file(GLOB_RECURSE HEADERS CONFIGURE_DEPENDS src/*.h)
 
-add_executable(main ${SOURCES} ${HEADERS})
\ No newline at end of file
+add_executable(main ${SOURCES} ${HEADERS})
+
+# ==== tests ====
+enable_testing()
+
+file(GLOB_RECURSE TEST_SOURCES CONFIGURE_DEPENDS tests/*.c)
+list(FILTER SOURCES EXCLUDE REGEX ".*src/main\\.c$")
+
+if(TEST_SOURCES)
+    add_executable(tests ${TEST_SOURCES} ${SOURCES})
+    add_test(NAME tests COMMAND tests)
+endif()
diff --git a/tests/test_vec4f.c b/tests/test_vec4f.c
new file mode 100644
index 0000000..f8cc217
--- /dev/null
+++ b/tests/test_vec4f.c
@@ -0,0 +1,62 @@
+//
+//  test_vec3f.c
+//  tests
+//
+//  Created by Loïc GUEZO on 21/06/2025.
+//
+
+#include <assert.h>
+#include <stdio.h>
+#include "../src/math/vec4.h"
+
+#define EPSILON 1e-6f
+
+void test_vec4f_creation() {
+    Vec4f_t v = vec4f(1.f, 2.f, 3.f, 4.f);
+    assert(fabsf(v.x - 1.f) < EPSILON);
+    assert(fabsf(v.y - 2.f) < EPSILON);
+    assert(fabsf(v.z - 3.f) < EPSILON);
+    assert(fabsf(v.w - 4.f) < EPSILON);
+}
+
+void test_vec4f_add() {
+    Vec4f_t a = vec4f(1.f, 2.f, 3.f, 4.f);
+    Vec4f_t b = vec4f(5.f, 6.f, 7.f, 8.f);
+    Vec4f_t r = vec4f_add(a, b);
+    assert(fabsf(r.x - 6.f) < EPSILON);
+    assert(fabsf(r.y - 8.f) < EPSILON);
+    assert(fabsf(r.z - 10.f) < EPSILON);
+    assert(fabsf(r.w - 12.f) < EPSILON);
+}
+
+void test_vec4f_sub() {
+    Vec4f_t a = vec4f(5.f, 6.f, 7.f, 8.f);
+    Vec4f_t b = vec4f(1.f, 2.f, 3.f, 4.f);
+    Vec4f_t r = vec4f_sub(a, b);
+    
+    assert(fabsf(r.x - 4.f) < EPSILON);
+    assert(fabsf(r.y - 4.f) < EPSILON);
+    assert(fabsf(r.z - 4.f) < EPSILON);
+    assert(fabsf(r.w - 4.f) < EPSILON);
+}
+
+void test_vec4f_scale() {
+    Vec4f_t a = vec4f(1.f, 2.f, 3.f, 4.f);
+    Vec4f_t r = vec4f_scale(a, 2.f);
+    assert(fabsf(r.x - 2.f) < EPSILON);
+    assert(fabsf(r.y - 4.f) < EPSILON);
+    assert(fabsf(r.z - 6.f) < EPSILON);
+    assert(fabsf(r.w - 8.f) < EPSILON);
+}
+
+void run_all_tests() {
+    test_vec4f_creation();
+    test_vec4f_add();
+    test_vec4f_sub();
+    test_vec4f_scale();
+}
+
+int main(void) {
+    run_all_tests();
+    return 0; // success
+}