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https://github.com/k3s-io/kubernetes.git
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113 lines
3.4 KiB
Go
113 lines
3.4 KiB
Go
/*
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Copyright 2014 Google Inc. All rights reserved.
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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*/
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package util
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import (
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"fmt"
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"testing"
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"github.com/coreos/go-etcd/etcd"
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)
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// EtcdClient is an injectable interface for testing.
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type EtcdClient interface {
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AddChild(key, data string, ttl uint64) (*etcd.Response, error)
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Get(key string, sort, recursive bool) (*etcd.Response, error)
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Set(key, value string, ttl uint64) (*etcd.Response, error)
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Create(key, value string, ttl uint64) (*etcd.Response, error)
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Delete(key string, recursive bool) (*etcd.Response, error)
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// I'd like to use directional channels here (e.g. <-chan) but this interface mimics
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// the etcd client interface which doesn't, and it doesn't seem worth it to wrap the api.
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Watch(prefix string, waitIndex uint64, recursive bool, receiver chan *etcd.Response, stop chan bool) (*etcd.Response, error)
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}
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type EtcdResponseWithError struct {
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R *etcd.Response
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E error
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}
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type FakeEtcdClient struct {
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Data map[string]EtcdResponseWithError
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DeletedKeys []string
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Err error
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t *testing.T
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Ix int
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// Will become valid after Watch is called; tester may write to it. Tester may
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// also read from it to verify that it's closed after injecting an error.
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WatchResponse chan *etcd.Response
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// Write to this to prematurely stop a Watch that is running in a goroutine.
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WatchInjectError chan<- error
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WatchStop chan<- bool
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}
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func MakeFakeEtcdClient(t *testing.T) *FakeEtcdClient {
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return &FakeEtcdClient{
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t: t,
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Data: map[string]EtcdResponseWithError{},
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}
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}
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func (f *FakeEtcdClient) AddChild(key, data string, ttl uint64) (*etcd.Response, error) {
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f.Ix = f.Ix + 1
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return f.Set(fmt.Sprintf("%s/%d", key, f.Ix), data, ttl)
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}
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func (f *FakeEtcdClient) Get(key string, sort, recursive bool) (*etcd.Response, error) {
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result := f.Data[key]
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if result.R == nil {
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f.t.Errorf("Unexpected get for %s", key)
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return &etcd.Response{}, &etcd.EtcdError{ErrorCode: 100} // Key not found
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}
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return result.R, result.E
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}
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func (f *FakeEtcdClient) Set(key, value string, ttl uint64) (*etcd.Response, error) {
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result := EtcdResponseWithError{
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R: &etcd.Response{
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Node: &etcd.Node{
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Value: value,
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},
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},
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}
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f.Data[key] = result
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return result.R, f.Err
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}
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func (f *FakeEtcdClient) Create(key, value string, ttl uint64) (*etcd.Response, error) {
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return f.Set(key, value, ttl)
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}
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func (f *FakeEtcdClient) Delete(key string, recursive bool) (*etcd.Response, error) {
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f.DeletedKeys = append(f.DeletedKeys, key)
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return &etcd.Response{}, f.Err
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}
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func (f *FakeEtcdClient) Watch(prefix string, waitIndex uint64, recursive bool, receiver chan *etcd.Response, stop chan bool) (*etcd.Response, error) {
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f.WatchResponse = receiver
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f.WatchStop = stop
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injectedError := make(chan error)
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defer close(injectedError)
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f.WatchInjectError = injectedError
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select {
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case <-stop:
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return nil, etcd.ErrWatchStoppedByUser
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case err := <-injectedError:
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return nil, err
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}
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// Never get here.
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return nil, nil
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}
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