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// Copyright 2017 PingCAP, Inc.
//
// 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,
// See the License for the specific language governing permissions and
// limitations under the License.
package kv_test
import (
"context"
. "github.com/pingcap/check"
"github.com/pingcap/errors"
"github.com/pingcap/parser/terror"
"github.com/pingcap/tidb/kv"
)
type testFaultInjectionSuite struct{}
var _ = Suite(testFaultInjectionSuite{})
func (s testFaultInjectionSuite) TestFaultInjectionBasic(c *C) {
var cfg kv.InjectionConfig
err1 := errors.New("foo")
cfg.SetGetError(err1)
cfg.SetCommitError(err1)
storage := kv.NewInjectedStore(kv.NewMockStorage(), &cfg)
txn, err := storage.Begin()
c.Assert(err, IsNil)
_, err = storage.BeginWithStartTS(0)
c.Assert(err, IsNil)
ver := kv.Version{Ver: 1}
snap, err := storage.GetSnapshot(ver)
c.Assert(err, IsNil)
b, err := txn.Get(context.TODO(), []byte{'a'})
c.Assert(err.Error(), Equals, err1.Error())
c.Assert(b, IsNil)
b, err = snap.Get(context.TODO(), []byte{'a'})
c.Assert(err.Error(), Equals, err1.Error())
c.Assert(b, IsNil)
bs, err := snap.BatchGet(context.Background(), nil)
c.Assert(err.Error(), Equals, err1.Error())
c.Assert(bs, IsNil)
bs, err = txn.BatchGet(context.Background(), nil)
c.Assert(err.Error(), Equals, err1.Error())
c.Assert(bs, IsNil)
err = txn.Commit(context.Background())
c.Assert(err.Error(), Equals, err1.Error())
cfg.SetGetError(nil)
cfg.SetCommitError(nil)
storage = kv.NewInjectedStore(kv.NewMockStorage(), &cfg)
txn, err = storage.Begin()
c.Assert(err, IsNil)
snap, err = storage.GetSnapshot(ver)
c.Assert(err, IsNil)
b, err = txn.Get(context.TODO(), []byte{'a'})
c.Assert(err, IsNil)
c.Assert(b, IsNil)
bs, err = txn.BatchGet(context.Background(), nil)
c.Assert(err, IsNil)
c.Assert(bs, IsNil)
b, err = snap.Get(context.TODO(), []byte{'a'})
c.Assert(terror.ErrorEqual(kv.ErrNotExist, err), IsTrue)
c.Assert(b, IsNil)
bs, err = snap.BatchGet(context.Background(), []kv.Key{[]byte("a")})
c.Assert(err, IsNil)
c.Assert(len(bs), Equals, 0)
err = txn.Commit(context.Background())
c.Assert(err, NotNil)
c.Assert(terror.ErrorEqual(err, kv.ErrTxnRetryable), IsTrue)
}