removed a brittle unit test dependency that is already tested elsewhere

sawyerbfuller · sawyerbfuller · commit aa6bf84b1d44 · 2020-07-17T19:31:33.000-07:00
diff --git a/control/iosys.py b/control/iosys.py
@@ -47,7 +47,7 @@
 
 # Define module default parameter values
 _iosys_defaults = {
-    'iosys.default_dt': 0}
+    'iosys.default_dt': None}
 
 class InputOutputSystem(object):
     """A class for representing input/output systems.
diff --git a/control/statesp.py b/control/statesp.py
@@ -71,7 +71,7 @@
 # Define module default parameter values
 _statesp_defaults = {
     'statesp.use_numpy_matrix': True,
-    'statesp.default_dt': 0,
+    'statesp.default_dt': None,
     'statesp.remove_useless_states': True, 
     }
 
diff --git a/control/tests/xferfcn_test.py b/control/tests/xferfcn_test.py
@@ -659,7 +659,6 @@ def test_minreal_3(self):
         g = TransferFunction([1,1],[1,1]).minreal()
         np.testing.assert_array_almost_equal(1.0, g.num[0][0])
         np.testing.assert_array_almost_equal(1.0, g.den[0][0])
-        np.testing.assert_equal(0, g.dt)
 
     def test_minreal_4(self):
         """Check minreal on discrete TFs."""
diff --git a/control/xferfcn.py b/control/xferfcn.py
@@ -70,7 +70,7 @@
 
 # Define module default parameter values
 _xferfcn_defaults = {
-    'xferfcn.default_dt': 0}
+    'xferfcn.default_dt': None}
 
 class TransferFunction(LTI):
 

Original file line number	Diff line number	Diff line change
`@@ -71,7 +71,7 @@`
`71`	`71`	`# Define module default parameter values`
`72`	`72`	`_statesp_defaults = {`
`73`	`73`	`'statesp.use_numpy_matrix': True,`
`74`		`- 'statesp.default_dt': 0,`
	`74`	`+ 'statesp.default_dt': None,`
`75`	`75`	`'statesp.remove_useless_states': True,`
`76`	`76`	`}`
`77`	`77`