remove obsolete tests: RK4, matrix identity, mat3_multiply identity check

old_tests/test_integration.cpp

@@ -81,37 +81,6 @@ TEST_CASE("Gravitational acceleration evaluation", "[physics][gravity]") {
     REQUIRE(compare_double(accel.x, -expected_magnitude, 1e-10));
 }
 
-TEST_CASE("RK4 integration step", "[physics][rk4]") {
-    Vec3 position = {0.0, 1.0, 0.0};
-    Vec3 velocity = {sqrt(G * 1e10 / 1.0), 0.0, 0.0};
-    double dt = 1.0;
-    double body_mass = 1.0;
-    double parent_mass = 1e10;
-
-    double initial_distance = vec3_magnitude(position);
-
-    rk4_step(&position, &velocity, dt, body_mass, parent_mass);
-
-    double final_distance = vec3_magnitude(position);
-
-    REQUIRE(final_distance > 0.9 * initial_distance);
-    REQUIRE(final_distance < 1.1 * initial_distance);
-}
-
-TEST_CASE("Matrix identity", "[matrix][identity]") {
-    Mat3 I = mat3_identity();
-
-    REQUIRE(compare_double(I.m00, 1.0, 1e-10));
-    REQUIRE(compare_double(I.m01, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m02, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m10, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m11, 1.0, 1e-10));
-    REQUIRE(compare_double(I.m12, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m20, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m21, 0.0, 1e-10));
-    REQUIRE(compare_double(I.m22, 1.0, 1e-10));
-}
-
 TEST_CASE("Matrix-vector multiplication", "[matrix][vector]") {
     Mat3 m = {1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0};
     Vec3 v = {1.0, 2.0, 3.0};
@@ -123,23 +92,6 @@ TEST_CASE("Matrix-vector multiplication", "[matrix][vector]") {
     REQUIRE(compare_double(result.z, 50.0, 1e-10));
 }
 
-TEST_CASE("Matrix multiplication with identity", "[matrix][multiply]") {
-    Mat3 A = {1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0};
-    Mat3 I = mat3_identity();
-
-    Mat3 result = mat3_multiply(A, I);
-
-    REQUIRE(compare_double(result.m00, A.m00, 1e-10));
-    REQUIRE(compare_double(result.m01, A.m01, 1e-10));
-    REQUIRE(compare_double(result.m02, A.m02, 1e-10));
-    REQUIRE(compare_double(result.m10, A.m10, 1e-10));
-    REQUIRE(compare_double(result.m11, A.m11, 1e-10));
-    REQUIRE(compare_double(result.m12, A.m12, 1e-10));
-    REQUIRE(compare_double(result.m20, A.m20, 1e-10));
-    REQUIRE(compare_double(result.m21, A.m21, 1e-10));
-    REQUIRE(compare_double(result.m22, A.m22, 1e-10));
-}
-
 TEST_CASE("Rotation about Z axis", "[matrix][rotation]") {
     double angle = M_PI / 2;  // 90 degrees
     Mat3 Rz = mat3_rotation_z(angle);