def test_explist_collapses_trap_data():
p = Pulling(trap, None, meta)
mol = ExpList([p,p])
collapsed = mol.collapse().trap
aggregated = TrapData.aggregate([trap,trap], 'ext')
print "Collapsed using ExpList.collapse():", collapsed.data
print "Aggregated using TrapData.aggregate():", aggregated.data
ok_(all(collapsed.data==aggregated.data), "Data is stacked and sorted by ext")
eq_(aggregated.metadata, {}, "Metadata is ignored when aggregated")
