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 setUp(self):
        base.TestCase.setUp(self)
        # Create some test documents with an item
        admin = {
            'email': 'admin@email.com',
            'login': 'adminlogin',
            'firstName': 'Admin',
            'lastName': 'Last',
            'password': 'adminpassword',
            'admin': True
        }
        self.admin = self.model('user').createUser(**admin)

        user = {
            'email': 'good@email.com',
            'login': 'goodlogin',
            'firstName': 'First',
            'lastName': 'Last',
            'password': 'goodpassword',
            'admin': False
        }
        self.user = self.model('user').createUser(**user)

        # Track folder, item, and setting provenance initially
        self.model('setting').set(
            constants.PluginSettings.PROVENANCE_RESOURCES, 'folder,setting')

        coll1 = {
            'name': 'Test Collection',
            'description': 'test coll',
            'public': True,
            'creator': self.admin
        }
        self.coll1 = self.model('collection').createCollection(**coll1)

        folder1 = {
            'parent': self.coll1,
            'parentType': 'collection',
            'name': 'Public test folder',
            'creator': self.admin

        }
        self.folder1 = self.model('folder').createFolder(**folder1)
        self.model('folder').setUserAccess(
            self.folder1, self.user, level=AccessType.WRITE, save=False)
        self.model('folder').setPublic(self.folder1, True, save=True)

        item1 = {
            'name': 'Public object',
            'creator': self.admin,
            'folder': self.folder1
        }
        self.item1 = self.model('item').createItem(**item1)