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081926e057
Add helpers for sorting slot/plug/connection refs. Allows external packages to sort their collections without the necessity to implement the actual ordering logic. Instead, it should be possible to directly plug provided helpers into sort.Interface.Less(). Signed-off-by: Maciej Borzecki <maciej.zenon.borzecki@canonical.com>
135 lines
4.1 KiB
Go
135 lines
4.1 KiB
Go
// -*- Mode: Go; indent-tabs-mode: t -*-
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/*
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* Copyright (C) 2016 Canonical Ltd
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 3 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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package interfaces_test
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import (
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"sort"
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. "gopkg.in/check.v1"
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"github.com/snapcore/snapd/interfaces"
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"github.com/snapcore/snapd/interfaces/ifacetest"
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)
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type SortingSuite struct{}
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var _ = Suite(&SortingSuite{})
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func newConnRef(plugSnap, plug, slotSnap, slot string) *interfaces.ConnRef {
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return &interfaces.ConnRef{PlugRef: interfaces.PlugRef{Snap: plugSnap, Name: plug}, SlotRef: interfaces.SlotRef{Snap: slotSnap, Name: slot}}
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}
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func (s *SortingSuite) TestByInterfaceName(c *C) {
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list := []interfaces.Interface{
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&ifacetest.TestInterface{InterfaceName: "iface-2"},
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&ifacetest.TestInterface{InterfaceName: "iface-1"},
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}
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sort.Sort(interfaces.ByInterfaceName(list))
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c.Assert(list, DeepEquals, []interfaces.Interface{
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&ifacetest.TestInterface{InterfaceName: "iface-1"},
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&ifacetest.TestInterface{InterfaceName: "iface-2"},
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})
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}
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func (s *SortingSuite) TestByConnRef(c *C) {
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list := []*interfaces.ConnRef{
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newConnRef("name-1", "plug-3", "name-2", "slot-1"),
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newConnRef("name-1", "plug-1", "name-2", "slot-3"),
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newConnRef("name-1", "plug-2", "name-2", "slot-2"),
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newConnRef("name-1", "plug-1", "name-2", "slot-4"),
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newConnRef("name-1", "plug-1", "name-2", "slot-1"),
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newConnRef("name-1", "plug-1", "name-2_instance", "slot-1"),
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newConnRef("name-1_instance", "plug-1", "name-2", "slot-1"),
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}
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sort.Sort(interfaces.ByConnRef(list))
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c.Assert(list, DeepEquals, []*interfaces.ConnRef{
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newConnRef("name-1", "plug-1", "name-2", "slot-1"),
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newConnRef("name-1", "plug-1", "name-2", "slot-3"),
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newConnRef("name-1", "plug-1", "name-2", "slot-4"),
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newConnRef("name-1", "plug-1", "name-2_instance", "slot-1"),
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newConnRef("name-1", "plug-2", "name-2", "slot-2"),
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newConnRef("name-1", "plug-3", "name-2", "slot-1"),
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newConnRef("name-1_instance", "plug-1", "name-2", "slot-1"),
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})
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}
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func newSlotRef(snap, name string) *interfaces.SlotRef {
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return &interfaces.SlotRef{Snap: snap, Name: name}
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}
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type bySlotRef []*interfaces.SlotRef
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func (b bySlotRef) Len() int { return len(b) }
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func (b bySlotRef) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
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func (b bySlotRef) Less(i, j int) bool {
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return b[i].SortsBefore(*b[j])
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}
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func (s *SortingSuite) TestSortSlotRef(c *C) {
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list := []*interfaces.SlotRef{
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newSlotRef("name-2", "slot-3"),
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newSlotRef("name-2_instance", "slot-1"),
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newSlotRef("name-2", "slot-2"),
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newSlotRef("name-2", "slot-4"),
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newSlotRef("name-2", "slot-1"),
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}
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sort.Sort(bySlotRef(list))
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c.Assert(list, DeepEquals, []*interfaces.SlotRef{
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newSlotRef("name-2", "slot-1"),
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newSlotRef("name-2", "slot-2"),
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newSlotRef("name-2", "slot-3"),
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newSlotRef("name-2", "slot-4"),
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newSlotRef("name-2_instance", "slot-1"),
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})
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}
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type byPlugRef []*interfaces.PlugRef
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func (b byPlugRef) Len() int { return len(b) }
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func (b byPlugRef) Swap(i, j int) { b[i], b[j] = b[j], b[i] }
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func (b byPlugRef) Less(i, j int) bool {
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return b[i].SortsBefore(*b[j])
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}
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func newPlugRef(snap, name string) *interfaces.PlugRef {
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return &interfaces.PlugRef{Snap: snap, Name: name}
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}
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func (s *SortingSuite) TestSortPlugRef(c *C) {
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list := []*interfaces.PlugRef{
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newPlugRef("name-2", "plug-3"),
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newPlugRef("name-2_instance", "plug-1"),
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newPlugRef("name-2", "plug-4"),
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newPlugRef("name-2", "plug-2"),
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newPlugRef("name-2", "plug-1"),
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}
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sort.Sort(byPlugRef(list))
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c.Assert(list, DeepEquals, []*interfaces.PlugRef{
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newPlugRef("name-2", "plug-1"),
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newPlugRef("name-2", "plug-2"),
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newPlugRef("name-2", "plug-3"),
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newPlugRef("name-2", "plug-4"),
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newPlugRef("name-2_instance", "plug-1"),
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})
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}
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