vlb/Theano — comment on commit ea16231b0c8ce6f32274bad4fa20d13c183418ec
File: theano/sparse/sandbox/test_sp.py line 456
By nouiz:

Here you pass with0 who had its zeros eliminated. You cau use with0.size to check the number of values stored in the sparse array. Assert that it is 9 before the theano call and the output of the theano call have 7 values. Making the comparison with todense won't test what we want.