mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
// Copyright 2015 CoreOS, Inc.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package storage
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import "testing"
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// TestWatcherWatchID tests that each watcher provides unique watchID,
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// and the watched event attaches the correct watchID.
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func TestWatcherWatchID(t *testing.T) {
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s := WatchableKV(newWatchableStore(tmpPath))
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defer cleanup(s, tmpPath)
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w := s.NewWatchStream()
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defer w.Close()
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idm := make(map[WatchID]struct{})
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for i := 0; i < 10; i++ {
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id := w.Watch([]byte("foo"), false, 0)
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if _, ok := idm[id]; ok {
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t.Errorf("#%d: id %d exists", i, id)
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}
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idm[id] = struct{}{}
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s.Put([]byte("foo"), []byte("bar"), NoLease)
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resp := <-w.Chan()
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if resp.WatchID != id {
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t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
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}
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if err := w.Cancel(id); err != nil {
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t.Error(err)
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}
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}
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s.Put([]byte("foo2"), []byte("bar"), NoLease)
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// unsynced watchers
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for i := 10; i < 20; i++ {
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id := w.Watch([]byte("foo2"), false, 1)
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if _, ok := idm[id]; ok {
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t.Errorf("#%d: id %d exists", i, id)
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}
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idm[id] = struct{}{}
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resp := <-w.Chan()
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if resp.WatchID != id {
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t.Errorf("#%d: watch id in event = %d, want %d", i, resp.WatchID, id)
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}
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if err := w.Cancel(id); err != nil {
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t.Error(err)
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}
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}
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}
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// TestWatchStreamCancel ensures cancel calls the cancel func of the watcher
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// with given id inside watchStream.
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func TestWatchStreamCancelWatcherByID(t *testing.T) {
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s := WatchableKV(newWatchableStore(tmpPath))
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defer cleanup(s, tmpPath)
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w := s.NewWatchStream()
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defer w.Close()
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id := w.Watch([]byte("foo"), false, 0)
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tests := []struct {
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cancelID WatchID
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werr error
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}{
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// no error should be returned when cancel the created watcher.
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{id, nil},
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// not exist error should be returned when cancel again.
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{id, ErrWatcherNotExist},
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// not exist error should be returned when cancel a bad id.
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{id + 1, ErrWatcherNotExist},
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}
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for i, tt := range tests {
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gerr := w.Cancel(tt.cancelID)
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if gerr != tt.werr {
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t.Errorf("#%d: err = %v, want %v", i, gerr, tt.werr)
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}
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}
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if l := len(w.(*watchStream).cancels); l != 0 {
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t.Errorf("cancels = %d, want 0", l)
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}
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}
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