def testOrderBy(self):
        """ create set of particles and orderby a given attribute
        """
        # This function was written by Roberto. It does things
        # differently, so let's keep it for reference.

        # create set of particles

        inFileNameMetadata = self.proj.getTmpPath('particlesOrderBy.sqlite')
        inFileNameData = self.proj.getTmpPath('particlesOrderBy.stk')

        imgSet = SetOfParticles(filename=inFileNameMetadata)
        imgSet.setSamplingRate(1.5)
        acq = Acquisition()
        acq.setAmplitudeContrast(0.1)
        acq.setMagnification(10000)
        acq.setVoltage(200)
        acq.setSphericalAberration(2.0)

        imgSet.setAcquisition(acq)
        img = Particle()

        for i in range(1, 10):
            img.setLocation(i, inFileNameData)
            img.setMicId(i % 3)
            img.setClassId(i % 5)
            imgSet.append(img)
            img.cleanObjId()

        imgSet.write()
        # now import the dataset
        prot1 = self.newProtocol(
            emprot.ProtImportParticles,
            importFrom=emprot.ProtImportParticles.IMPORT_FROM_SCIPION,
            sqliteFile=inFileNameMetadata,
            magnification=10000,
            samplingRate=1.5)
        prot1.setObjLabel('from sqlite (test-sets)')
        self.launchProtocol(prot1)

        if prot1.outputParticles is None:
            raise Exception(
                'Import of images: %s, failed. outputParticles is None.' %
                inFileNameMetadata)

        protSplitSet = self.newProtocol(emprot.ProtSplitSet,
                                        inputSet=prot1.outputParticles,
                                        numberOfSets=2,
                                        randomize=True)
        self.launchProtocol(protSplitSet)

        inputSets = [
            protSplitSet.outputParticles01, protSplitSet.outputParticles02
        ]
        outputSet = SetOfParticles(
            filename=self.proj.getTmpPath('gold.sqlite'))
        for itemSet in inputSets:
            for obj in itemSet:
                outputSet.append(obj)

        for item1, item2 in izip(imgSet, outputSet):
            if not item1.equalAttributes(item2):
                print("Items differ:")
                prettyDict(item1.getObjDict())
                prettyDict(item2.getObjDict())
            self.assertTrue(item1.equalAttributes(item2), )
    def testOrderBy(self):
        """ create set of particles and orderby a given attribute
        """
        # This function was written by Roberto. It does things
        # differently, so let's keep it for reference.

        #create set of particles

        inFileNameMetadata = self.proj.getTmpPath('particlesOrderBy.sqlite')
        inFileNameData = self.proj.getTmpPath('particlesOrderBy.stk')

        imgSet = SetOfParticles(filename=inFileNameMetadata)
        imgSet.setSamplingRate(1.5)
        acq = Acquisition()
        acq.setAmplitudeContrast(0.1)
        acq.setMagnification(10000)
        acq.setVoltage(200)
        acq.setSphericalAberration(2.0)
        
        imgSet.setAcquisition(acq)
        img = Particle()

        for i in range(1, 10):
            img.setLocation(i, inFileNameData)
            img.setMicId(i%3)
            img.setClassId(i%5)
            imgSet.append(img)
            img.cleanObjId()

        imgSet.write()
        #now import the dataset
        prot1 = self.newProtocol(ProtImportParticles,
                                 importFrom=ProtImportParticles.IMPORT_FROM_SCIPION,
                                 sqliteFile=inFileNameMetadata,
                                 magnification=10000,
                                 samplingRate=1.5
                                 )
        prot1.setObjLabel('from sqlite (test-sets)')
        self.launchProtocol(prot1)

        if prot1.outputParticles is None:
            raise Exception('Import of images: %s, failed. outputParticles is None.' % inFileNameMetadata)
        
        protSplitSet   = self.newProtocol(ProtSplitSet,
                                          inputSet=prot1.outputParticles,
                                          numberOfSets=2,
                                          randomize=True)
        self.launchProtocol(protSplitSet)

        inputSets = [protSplitSet.outputParticles01,protSplitSet.outputParticles02]
        outputSet = SetOfParticles(filename=self.proj.getTmpPath('gold.sqlite'))
        for itemSet in inputSets:
            for obj in itemSet:
                outputSet.append(obj)

        for item1, item2 in izip(imgSet, outputSet):
            if not item1.equalAttributes(item2):
                print "Items differ:"
                prettyDict(item1.getObjDict())
                prettyDict(item2.getObjDict())
            self.assertTrue(item1.equalAttributes(item2),  )