fixed bug related to computing uniqueIds of spectra having peaks bein…

…g numpy views

emzed/core/data_types/ms_types.py

@@ -181,7 +181,7 @@ def uniqueId(self):
             h.update("%.6e" % self.rt)
             h.update(str(self.msLevel))
             # peaks.data is binary representation of numpy array peaks:
-            h.update(str(self.peaks.data))
+            h.update(str(self.peaks.tostring()))
             h.update(str(self.polarity))
             for mz, ii in self.precursors:
                 h.update("%.6e" % mz)

tests/test_data_types.py

@@ -299,6 +299,12 @@ def check(fun, spec=spec):
         pm.meta.pop("unique_id", None)
         assert back.uniqueId() == pm.uniqueId()
 
+        # this was broken after pickling, the callback was not pickled and calling
+        # it whein operatin on peaks rose an excepion
         for s in back:
             s.peaks += 1
 
+        # this was broken because it creates a view which is not continous:
+        s.peaks = s.peaks[1:-1:2]
+        assert s.uniqueId()
+