fix test_field : field init from empty alloc may contains NaN

hysop/fields/tests/test_fields.py

@@ -209,7 +209,6 @@ def test_tensor_field():
     for df in DT12.data:
         assert np.all(df == 12)
 
-
     str(DT0)
     DT0.short_description()
     assert str(DT0) == DT0.long_description()
@@ -222,9 +221,9 @@ def test_tensor_field():
 
     DT9.rename('foo')
     DT9.initialize(func)
+    DT10.randomize()
     DT9.initialize(DT10.data)
     DT9.fill(4)
-    DT9.randomize()
     DT9.copy(DT0[1:, 1:])
 
     DT9.has_ghosts()
@@ -385,6 +384,6 @@ def test_boundaries():
 
 
 if __name__ == '__main__':
-    test_field()
+    # test_field()
     test_tensor_field()
-    test_boundaries()
+    # test_boundaries()