| // Copyright 2016 The etcd Authors |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| package clientv3 |
| |
| import ( |
| "testing" |
| "time" |
| |
| "github.com/coreos/etcd/pkg/testutil" |
| ) |
| |
| func TestTxnPanics(t *testing.T) { |
| defer testutil.AfterTest(t) |
| |
| kv := &kv{} |
| |
| errc := make(chan string) |
| df := func() { |
| if s := recover(); s != nil { |
| errc <- s.(string) |
| } |
| } |
| |
| cmp := Compare(CreateRevision("foo"), "=", 0) |
| op := OpPut("foo", "bar") |
| |
| tests := []struct { |
| f func() |
| |
| err string |
| }{ |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).If(cmp).If(cmp) |
| }, |
| |
| err: "cannot call If twice!", |
| }, |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).Then(op).If(cmp) |
| }, |
| |
| err: "cannot call If after Then!", |
| }, |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).Else(op).If(cmp) |
| }, |
| |
| err: "cannot call If after Else!", |
| }, |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).Then(op).Then(op) |
| }, |
| |
| err: "cannot call Then twice!", |
| }, |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).Else(op).Then(op) |
| }, |
| |
| err: "cannot call Then after Else!", |
| }, |
| { |
| f: func() { |
| defer df() |
| kv.Txn(nil).Else(op).Else(op) |
| }, |
| |
| err: "cannot call Else twice!", |
| }, |
| } |
| |
| for i, tt := range tests { |
| go tt.f() |
| select { |
| case err := <-errc: |
| if err != tt.err { |
| t.Errorf("#%d: got %s, wanted %s", i, err, tt.err) |
| } |
| case <-time.After(time.Second): |
| t.Errorf("#%d: did not panic, wanted panic %s", i, tt.err) |
| } |
| } |
| } |