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 get_list(arg=None):
	"""get list of messages"""
	frappe.form_dict['limit_start'] = int(frappe.form_dict['limit_start'])
	frappe.form_dict['limit_page_length'] = int(frappe.form_dict['limit_page_length'])
	frappe.form_dict['user'] = frappe.session['user']

	# set all messages as read
	frappe.db.begin()
	frappe.db.sql("""UPDATE `tabCommunication` set seen = 1
		where
			communication_type in ('Chat', 'Notification')
			and reference_doctype = 'User'
			and reference_name = %s""", frappe.session.user)

	delete_notification_count_for("Messages")

	frappe.local.flags.commit = True

	if frappe.form_dict['contact'] == frappe.session['user']:
		# return messages
		return frappe.db.sql("""select * from `tabCommunication`
			where
				communication_type in ('Chat', 'Notification')
				and reference_doctype ='User'
				and (owner=%(contact)s
					or reference_name=%(user)s
					or owner=reference_name)
			order by creation desc
			limit %(limit_start)s, %(limit_page_length)s""", frappe.local.form_dict, as_dict=1)
	else:
		return frappe.db.sql("""select * from `tabCommunication`
			where
				communication_type in ('Chat', 'Notification')
				and reference_doctype ='User'
				and ((owner=%(contact)s and reference_name=%(user)s)
					or (owner=%(contact)s and reference_name=%(contact)s))
			order by creation desc
			limit %(limit_start)s, %(limit_page_length)s""", frappe.local.form_dict, as_dict=1)