Wind.py.test.in: added abslim=2 for dv2ps

test/pytest/Wind.py.test.in

 #! @PYTHON@
 
 from cdoTest import *
-#test_module = TestModule()
+from collections import defaultdict
 
 OPERATORS=["dv2ps","dv2uv" , "uv2dv" , "dv2uvl", "uv2dvl"]
 INFILES=["t31_dv.grb","t31_dv.grb","dv2uv_ref","t31_dv.grb","dv2uvl_ref"]
+ABSLIM=defaultdict(lambda : 0.001, {"dv2ps" : 2})
 
 test_module= TestModule()
 
@@ -13,7 +14,7 @@ for OPERATOR,IFILE in zip(OPERATORS,INFILES):
     RFILE=f'{DATAPATH}{OPERATOR}_ref'
     t=TAPTest(OPERATOR)
     t.add(f'{CDO} {OPERATOR} {DATAPATH}{IFILE} {OFILE}')
-    t.diff(OFILE,RFILE)
+    t.add(f'{CDO} diff,abslim={ABSLIM[OPERATOR]} {RFILE} {OFILE}')
     t.clean(OFILE)
     test_module.add(t)