1 files changed, 9 insertions, 0 deletions
diff --git a/tests/test_fixed_point.cpp b/tests/test_fixed_point.cpp
new file mode 100644
index 0000000..8cb12d2
--- /dev/null
+++ b/tests/test_fixed_point.cpp
@@ -0,0 +1,9 @@
+#include <catch2/catch_test_macros.hpp>
+#include "fixed_point.h"
+
+TEST_CASE("fp_t addition is commutative") {
+    fp_t a = fp_t::from_int(1);
+    fp_t b = fp_t::from_int(2);
+    CHECK(a + b == b + a);
+    REQUIRE(a.raw != 0);
+}