Test also if SB is fixed

test/gtest_factory_state_block.cpp

@@ -68,13 +68,17 @@ TEST(FactoryStateBlock, creator_default)
 TEST(FactoryStateBlock, creator_StateBlock)
 {
     auto sbp = FactoryStateBlock::get().create("StateBlock", Eigen::Vector3d(1,2,3), false);
-    auto sbv = FactoryStateBlock::get().create("StateBlock", Eigen::Vector2d(4,5), false);
+    auto sbv = FactoryStateBlock::get().create("StateBlock", Eigen::Vector2d(4,5), true);
     auto sbw = FactoryStateBlock::get().create("StateBlock", Eigen::Vector1d(6), false);
 
     ASSERT_MATRIX_APPROX(Eigen::Vector3d(1,2,3) , sbp->getState(), 1e-20);
     ASSERT_MATRIX_APPROX(Eigen::Vector2d(4,5)   , sbv->getState(), 1e-20);
     ASSERT_MATRIX_APPROX(Eigen::Vector1d(6)     , sbw->getState(), 1e-20);
 
+    ASSERT_FALSE(sbp->isFixed());
+    ASSERT_TRUE (sbv->isFixed());
+    ASSERT_FALSE(sbw->isFixed());
+
     ASSERT_FALSE(sbp->hasLocalParametrization());
     ASSERT_FALSE(sbv->hasLocalParametrization());
     ASSERT_FALSE(sbw->hasLocalParametrization());