Mark linfnorm tests as Slycot-only.

roryyorke · roryyorke · commit 64bdb10eb9e7 · 2022-04-24T17:34:30.000+02:00
diff --git a/control/tests/statesp_test.py b/control/tests/statesp_test.py
@@ -1106,6 +1106,7 @@ def test_latex_repr_testsize(editsdefaults):
 # the underdamped gpeak and fpeak are found from
 #   gpeak = 1/(2*zeta*(1-zeta**2)**0.5
 #   fpeak = wn*(1-2*zeta**2)**0.5
+@slycotonly
 @pytest.mark.parametrize(
     "name, sys, refgpeak, reffpeak",
     [
@@ -1124,6 +1125,7 @@ def test_linfnorm_siso_continuoustime(name, sys, refgpeak, reffpeak):
 
 
 # these are the continuous-time examples with some tweaks
+@slycotonly
 @pytest.mark.parametrize(
     "name, sys, refgpeak, reffpeak",
     [
@@ -1146,6 +1148,7 @@ def test_linfnorm_siso_discretetime(name, sys, refgpeak, reffpeak):
     np.testing.assert_allclose(fpeak, reffpeak)
 
 
+@slycotonly
 @pytest.mark.parametrize("name, sys, refgpeak, reffpeak",
                          linfnorm_mimo_testcases.continuous_time)
 def test_linfnorm_mimo_continuoustime(name, sys, refgpeak, reffpeak):
@@ -1154,6 +1157,7 @@ def test_linfnorm_mimo_continuoustime(name, sys, refgpeak, reffpeak):
     np.testing.assert_allclose(fpeak, reffpeak)
 
 
+@slycotonly
 @pytest.mark.parametrize("name, sys, refgpeak, reffpeak",
                          linfnorm_mimo_testcases.discrete_time)
 def test_linfnorm_mimo_discretetime(name, sys, refgpeak, reffpeak):
@@ -1162,8 +1166,8 @@ def test_linfnorm_mimo_discretetime(name, sys, refgpeak, reffpeak):
     np.testing.assert_allclose(fpeak, reffpeak)
 
 
+@slycotonly
 def test_linfnorm_notimebase():
     g = ct.ss(-0.1,1,1,0,dt=None)
     with pytest.raises(ValueError):
         linfnorm(g)
-
