158 lines
2.9 KiB
Go
158 lines
2.9 KiB
Go
// Copyright (C) 2023 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at https://mozilla.org/MPL/2.0/.
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package model
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import (
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"context"
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"strings"
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"testing"
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"github.com/syncthing/syncthing/lib/events"
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"github.com/thejerf/suture/v4"
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)
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func TestServiceMap(t *testing.T) {
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t.Parallel()
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ctx, cancel := context.WithCancel(context.Background())
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t.Cleanup(cancel)
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sup := suture.NewSimple("TestServiceMap")
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sup.ServeBackground(ctx)
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t.Run("SimpleAddRemove", func(t *testing.T) {
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t.Parallel()
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sm := newServiceMap[string, *dummyService](events.NoopLogger)
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sup.Add(sm)
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// Add two services. They should start.
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d1 := newDummyService()
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d2 := newDummyService()
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sm.Add("d1", d1)
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sm.Add("d2", d2)
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<-d1.started
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<-d2.started
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// Remove them. They should stop.
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if !sm.Remove("d1") {
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t.Errorf("Remove failed")
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}
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if !sm.Remove("d2") {
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t.Errorf("Remove failed")
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}
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<-d1.stopped
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<-d2.stopped
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})
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t.Run("OverwriteImpliesRemove", func(t *testing.T) {
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t.Parallel()
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sm := newServiceMap[string, *dummyService](events.NoopLogger)
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sup.Add(sm)
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d1 := newDummyService()
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d2 := newDummyService()
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// Add d1, it should start.
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sm.Add("k", d1)
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<-d1.started
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// Add d2, with the same key. The previous one should stop as we're
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// doing a replace.
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sm.Add("k", d2)
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<-d1.stopped
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<-d2.started
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if !sm.Remove("k") {
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t.Errorf("Remove failed")
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}
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<-d2.stopped
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})
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t.Run("IterateWithRemoveAndWait", func(t *testing.T) {
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t.Parallel()
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sm := newServiceMap[string, *dummyService](events.NoopLogger)
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sup.Add(sm)
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// Add four services.
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d1 := newDummyService()
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d2 := newDummyService()
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d3 := newDummyService()
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d4 := newDummyService()
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sm.Add("keep1", d1)
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sm.Add("remove2", d2)
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sm.Add("keep3", d3)
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sm.Add("remove4", d4)
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<-d1.started
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<-d2.started
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<-d3.started
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<-d4.started
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// Remove two of them from within the iterator.
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sm.Each(func(k string, v *dummyService) error {
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if strings.HasPrefix(k, "remove") {
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sm.RemoveAndWait(k, 0)
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}
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return nil
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})
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// They should have stopped.
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<-d2.stopped
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<-d4.stopped
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// They should not be in the map anymore.
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if _, ok := sm.Get("remove2"); ok {
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t.Errorf("Service still in map")
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}
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if _, ok := sm.Get("remove4"); ok {
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t.Errorf("Service still in map")
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}
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// The other two should still be running.
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if _, ok := sm.Get("keep1"); !ok {
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t.Errorf("Service not in map")
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}
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if _, ok := sm.Get("keep3"); !ok {
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t.Errorf("Service not in map")
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}
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})
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}
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type dummyService struct {
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started chan struct{}
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stopped chan struct{}
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}
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func newDummyService() *dummyService {
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return &dummyService{
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started: make(chan struct{}),
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stopped: make(chan struct{}),
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}
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}
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func (d *dummyService) Serve(ctx context.Context) error {
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close(d.started)
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defer close(d.stopped)
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<-ctx.Done()
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return nil
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}
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