added tests on composed operators, replaced 'model' test with operator test

test/test_operators/test_adjoint.py

@@ -58,6 +58,8 @@ def testOperatorCombinations(sp, dtype):
     ift.extra.consistency_check(op, dtype, dtype)
     op = a + b
     ift.extra.consistency_check(op, dtype, dtype)
+    op = a - b
+    ift.extra.consistency_check(op, dtype, dtype)
 
 
 def testLinearInterpolator():

test/test_model_gradients.py → test/test_operators/test_gradients.py

@@ -21,7 +21,7 @@ from numpy.testing import assert_
 
 import nifty5 as ift
 
-from .common import list2fixture
+from ..common import list2fixture
 
 pmp = pytest.mark.parametrize
 space = list2fixture([
@@ -81,6 +81,12 @@ def testBinary(type1, type2, space, seed):
     pos = ift.from_random("normal", dom)
     model = ift.OuterProduct(pos['s1'], ift.makeDomain(space))
     ift.extra.check_value_gradient_consistency(model, pos['s2'], ntries=20)
+    model = select_s1 **2
+    pos = ift.from_random("normal", dom1)
+    ift.extra.check_value_gradient_consistency(model, pos, ntries=20)
+    model = select_s1.clip(-1,1)
+    pos = ift.from_random("normal", dom1)
+    ift.extra.check_value_gradient_consistency(model, pos, ntries=20)
     if isinstance(space, ift.RGSpace):
         model = ift.FFTOperator(space)(select_s1*select_s2)
         pos = ift.from_random("normal", dom)