void DualQuaternionTransformationTest::normalizeRotation() {
    Object3D o;
    o.setTransformation(DualQuaternion::rotation(Deg(17.0f), Vector3::xAxis()));
    o.normalizeRotation();
    CORRADE_COMPARE(o.transformationMatrix(), Matrix4::rotationX(Deg(17.0f)));
}
void RigidMatrixTransformation3DTest::normalizeRotation() {
    Object3D o;
    o.setTransformation(Matrix4::rotationX(Deg(17.0f)));
    o.normalizeRotation();
    CORRADE_COMPARE(o.transformationMatrix(), Matrix4::rotationX(Deg(17.0f)));
}