Julian Schakib
--- a/tests/geometry/functions/inverse.cc 0 → 100644
+++ b/tests/geometry/functions/inverse.cc 0 → 100644
+#include "matrix_helper.hh"
+
+
+TG_FUZZ_TEST(TypedGeometry, Inverse)
+{
+    // random mat1 inverse test
+    {
+        auto box1 = tg::aabb1(tg::pos1(-1), tg::pos1(1));
+
+        auto m = tg::mat1();
+        auto r = 0.0f;
+        while (r == 0)
+            r = uniform(rng, box1).x * 10.0f;
+        m.col(0) = r;
+
+        CHECK(helper::isIdentity<1, tg::f32>({tg::inverse(m) * m}, tg::f32(1e-2)));
--- a/tests/geometry/functions/length.cc 0 → 100644
+++ b/tests/geometry/functions/length.cc 0 → 100644
+#include "test.hh"
+
+TG_FUZZ_TEST(TypedGeometry, Length)
+{
+    auto box1 = tg::aabb1(tg::pos1(-1.0f), tg::pos1(1.0f));
+    auto box2 = tg::aabb2(tg::pos2(-1.0f), tg::pos2(1.0f));
+    auto box3 = tg::aabb3(tg::pos3(-1.0f), tg::pos3(1.0f));
+    auto box4 = tg::aabb4(tg::pos4(-1.0f), tg::pos4(1.0f));
+
+    // length and length2 tests
+
+    // check consistency of length and length2
+    // vecs
+    {
+        auto v = tg::vec1(uniform(rng, box1));
+        CHECK(tg::length(v) == doctest::Approx(tg::sqrt(tg::length2(v))).epsilon(1e-5));
--- a/tests/geometry/functions/vector_helper.hh 0 → 100644
+++ b/tests/geometry/functions/vector_helper.hh 0 → 100644
+#pragma once
+
+#include <typed-geometry/tg.hh>
+
+namespace helper
+{
+// checks if two vectors are identical
+template <int D, class ScalarT>
+inline bool isIdentical(tg::vec<D, ScalarT> u, tg::vec<D, ScalarT> v, ScalarT eps = 0)