def test_view_of_view(matrix_type, subset_func, subset_func2):
    adata = gen_adata((30, 15), X_type=matrix_type)
    adata.raw = adata
    if subset_func is single_subset:
        pytest.xfail("Other subset generating functions have trouble with this")
    var_s1 = subset_func(adata.var_names, min_size=4)
    var_view1 = adata[:, var_s1]
    var_s2 = subset_func2(var_view1.var_names)
    var_view2 = var_view1[:, var_s2]
    assert var_view2._adata_ref is adata
    obs_s1 = subset_func(adata.obs_names, min_size=4)
    obs_view1 = adata[obs_s1, :]
    obs_s2 = subset_func2(obs_view1.obs_names)
    assert adata[obs_s1, :][:, var_s1][obs_s2, :]._adata_ref is adata

    view_of_actual_copy = adata[:, var_s1].copy()[obs_s1, :].copy()[:, var_s2].copy()

    view_of_view_copy = adata[:, var_s1][obs_s1, :][:, var_s2].copy()

    assert_equal(view_of_actual_copy, view_of_view_copy, exact=True)
def testProvenanceFolder(self):
        """
        Test folder provenance, including turning off and on the provenance
        handling of folders.
        """
        folder1 = self.folder1
        user = self.admin

        # check that the first version of the folder provenance exists
        self._checkProvenance(None, folder1, 1, user, 'creation',
                              resource='folder')
        # Edit the folder and check again
        params1 = {'name': 'Renamed folder', 'description': 'New description'}
        resp = self.request(path='/folder/%s' % folder1['_id'],
                            method='PUT', user=user, params=params1)
        self.assertStatusOk(resp)
        params1['lowerName'] = params1['name'].lower()
        self._checkProvenance(None, folder1, 2, user, 'update',
                              {'new': params1}, resource='folder')

        # Turn off folder provenance and make sure asking for it fails
        self.model('setting').set(
            constants.PluginSettings.PROVENANCE_RESOURCES, 'setting')
        resp = self._getProvenance(folder1, user, resource='folder',
                                   checkOk=False)
        self.assertStatus(resp, 400)
        # While folder provenance is off, create a second folder and edit the
        # first folder
        params2 = {'name': 'Renamed Again', 'description': 'Description 2'}
        resp = self.request(path='/folder/%s' % folder1['_id'],
                            method='PUT', user=user, params=params2)
        self.assertStatusOk(resp)
        params2['lowerName'] = params2['name'].lower()

        folder2 = {
            'parent': self.coll1,
            'parentType': 'collection',
            'name': 'Private test folder',
            'creator': self.admin
        }
        folder2 = self.model('folder').createFolder(**folder2)
        # Turn back on folder provenance and check that it didn't record the
        # changes we made.
        self.model('setting').set(
            constants.PluginSettings.PROVENANCE_RESOURCES, 'folder,setting')
        self._checkProvenance(None, folder1, 2, user, 'update',
                              {'new': params1}, resource='folder')
        # Changing folder1 again should now show this change, and the old value
        # should show the gap in the data
        params3 = {'name': 'Renamed C', 'description': 'Description 3'}
        resp = self.request(path='/folder/%s' % folder1['_id'],
                            method='PUT', user=user, params=params3)
        self.assertStatusOk(resp)
        params3['lowerName'] = params3['name'].lower()
        self._checkProvenance(None, folder1, 3, user, 'update',
                              {'old': params2, 'new': params3},
                              resource='folder')
        # The new folder should have no provenance
        resp = self._getProvenance(folder2, user, resource='folder')
        self.assertEqual(resp.json['resourceId'], str(folder2['_id']))
        self.assertIsNone(resp.json['provenance'])
        # Edit the new folder; it should show the unknown history followed by
        # the edit
        params4 = {'description': 'Folder 2 Description'}
        resp = self.request(path='/folder/%s' % folder2['_id'],
                            method='PUT', user=user, params=params4)
        self.assertStatusOk(resp)
        resp = self._getProvenance(folder2, user, 1, resource='folder')
        self._checkProvenance(resp, folder2, 1, user, 'unknownHistory',
                              resource='folder')
        self._checkProvenance(None, folder2, 2, user, 'update',
                              {'new': params4}, resource='folder')
        # We should also see the initial history using negative indexing
        resp = self._getProvenance(folder2, user, -2, resource='folder')
        self._checkProvenance(resp, folder2, 1, user, 'unknownHistory',
                              resource='folder')
        # We should be able to get the entire history using 'all'
        resp = self._getProvenance(folder2, user, 'all', resource='folder')
        self.assertEqual(resp.json['resourceId'], str(folder2['_id']))
        self.assertEqual(len(resp.json['provenance']), 2)
        self.assertEqual(resp.json['provenance'][0]['eventType'],
                         'unknownHistory')
        self.assertEqual(resp.json['provenance'][1]['eventType'], 'update')
        # We should get an error if we ask for a nonsense version
        resp = self._getProvenance(folder2, user, 'not_a_version',
                                   resource='folder', checkOk=False)
        self.assertStatus(resp, 400)