client-go/integration_tests/scan_mock_test.go

116 lines
3.2 KiB
Go

// Copyright 2021 TiKV 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.
// NOTE: The code in this file is based on code from the
// TiDB project, licensed under the Apache License v 2.0
//
// https://github.com/pingcap/tidb/tree/cc5e161ac06827589c4966674597c137cc9e809c/store/tikv/tests/scan_mock_test.go
//
// Copyright 2016 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,
// 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 tikv_test
import (
"context"
"testing"
"github.com/stretchr/testify/suite"
"github.com/tikv/client-go/v2/tikv"
)
func TestScanMock(t *testing.T) {
suite.Run(t, new(testScanMockSuite))
}
type testScanMockSuite struct {
suite.Suite
}
func (s *testScanMockSuite) TestScanMultipleRegions() {
store := tikv.StoreProbe{KVStore: NewTestStore(s.T())}
defer store.Close()
txn, err := store.Begin()
s.Nil(err)
for ch := byte('a'); ch <= byte('z'); ch++ {
err = txn.Set([]byte{ch}, []byte{ch})
s.Nil(err)
}
err = txn.Commit(context.Background())
s.Nil(err)
txn, err = store.Begin()
s.Nil(err)
scanner, err := txn.NewScanner([]byte("a"), nil, 10, false)
s.Nil(err)
for ch := byte('a'); ch <= byte('z'); ch++ {
s.Equal([]byte{ch}, scanner.Key())
s.Nil(scanner.Next())
}
s.False(scanner.Valid())
scanner, err = txn.NewScanner([]byte("a"), []byte("i"), 10, false)
s.Nil(err)
for ch := byte('a'); ch <= byte('h'); ch++ {
s.Equal([]byte{ch}, scanner.Key())
s.Nil(scanner.Next())
}
s.False(scanner.Valid())
}
func (s *testScanMockSuite) TestReverseScan() {
store := tikv.StoreProbe{KVStore: NewTestStore(s.T())}
defer store.Close()
txn, err := store.Begin()
s.Nil(err)
for ch := byte('a'); ch <= byte('z'); ch++ {
err = txn.Set([]byte{ch}, []byte{ch})
s.Nil(err)
}
err = txn.Commit(context.Background())
s.Nil(err)
txn, err = store.Begin()
s.Nil(err)
scanner, err := txn.NewScanner(nil, []byte("z"), 10, true)
s.Nil(err)
for ch := byte('y'); ch >= byte('a'); ch-- {
s.Equal(string([]byte{ch}), string(scanner.Key()))
s.Nil(scanner.Next())
}
s.False(scanner.Valid())
scanner, err = txn.NewScanner([]byte("a"), []byte("i"), 10, true)
s.Nil(err)
for ch := byte('h'); ch >= byte('a'); ch-- {
s.Equal(string([]byte{ch}), string(scanner.Key()))
s.Nil(scanner.Next())
}
s.False(scanner.Valid())
}