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