mirror of
https://github.com/etcd-io/etcd.git
synced 2024-09-27 06:25:44 +00:00
84 lines
3.1 KiB
Go
84 lines
3.1 KiB
Go
// Copyright 2022 The etcd Authors
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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 linearizability
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import (
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"errors"
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"github.com/anishathalye/porcupine"
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"testing"
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)
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func TestModel(t *testing.T) {
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tcs := []struct {
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name string
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okOperations []porcupine.Operation
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failOperation *porcupine.Operation
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}{
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{
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name: "Etcd must return what was written",
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okOperations: []porcupine.Operation{
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{Input: etcdRequest{op: Put, key: "key", putData: "1"}, Output: etcdResponse{}},
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{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: "1"}},
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},
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failOperation: &porcupine.Operation{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: "2"}},
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},
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{
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name: "Etcd can crash after storing result but before returning success to client",
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okOperations: []porcupine.Operation{
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{Input: etcdRequest{op: Put, key: "key", putData: "1"}, Output: etcdResponse{err: errors.New("failed")}},
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{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: "1"}},
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},
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},
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{
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name: "Etcd can crash before storing result",
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okOperations: []porcupine.Operation{
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{Input: etcdRequest{op: Put, key: "key", putData: "1"}, Output: etcdResponse{err: errors.New("failed")}},
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{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: ""}},
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},
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},
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{
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name: "Etcd can continue errored request after it failed",
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okOperations: []porcupine.Operation{
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{Input: etcdRequest{op: Put, key: "key", putData: "1"}, Output: etcdResponse{err: errors.New("failed")}},
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{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: ""}},
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{Input: etcdRequest{op: Put, key: "key"}, Output: etcdResponse{getData: "2"}},
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{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: "1"}},
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},
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failOperation: &porcupine.Operation{Input: etcdRequest{op: Get, key: "key"}, Output: etcdResponse{getData: ""}},
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},
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}
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for _, tc := range tcs {
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var ok bool
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t.Run(tc.name, func(t *testing.T) {
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state := etcdModel.Init()
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for _, op := range tc.okOperations {
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t.Logf("state: %v", state)
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ok, state = etcdModel.Step(state, op.Input, op.Output)
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if !ok {
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t.Errorf("Unexpected failed operation: %s", etcdModel.DescribeOperation(op.Input, op.Output))
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}
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}
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if tc.failOperation != nil {
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t.Logf("state: %v", state)
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ok, state = etcdModel.Step(state, tc.failOperation.Input, tc.failOperation.Output)
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if ok {
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t.Errorf("Unexpected succesfull operation: %s", etcdModel.DescribeOperation(tc.failOperation.Input, tc.failOperation.Output))
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}
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}
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})
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}
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}
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