52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
// Copyright 2021 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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//go:build !codes
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package testutil
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import (
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"slices"
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"testing"
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"github.com/pingcap/tidb/pkg/kv"
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"github.com/pingcap/tidb/pkg/parser/mysql"
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"github.com/pingcap/tidb/pkg/sessionctx/stmtctx"
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"github.com/pingcap/tidb/pkg/types"
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"github.com/pingcap/tidb/pkg/util/codec"
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"github.com/stretchr/testify/require"
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)
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// MustNewCommonHandle create a common handle with given values.
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func MustNewCommonHandle(t *testing.T, values ...any) kv.Handle {
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encoded, err := codec.EncodeKey(stmtctx.NewStmtCtx().TimeZone(), nil, types.MakeDatums(values...)...)
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require.NoError(t, err)
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ch, err := kv.NewCommonHandle(encoded)
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require.NoError(t, err)
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return ch
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}
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// MaskSortHandles sorts the handles by lowest (fieldTypeBits - 1 - shardBitsCount) bits.
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func MaskSortHandles(handles []int64, shardBitsCount int, fieldType byte) []int64 {
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typeBitsLength := mysql.DefaultLengthOfMysqlTypes[fieldType] * 8
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const signBitCount = 1
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shiftBitsCount := 64 - typeBitsLength + shardBitsCount + signBitCount
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ordered := make([]int64, len(handles))
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for i, h := range handles {
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ordered[i] = h << shiftBitsCount >> shiftBitsCount
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}
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slices.Sort(ordered)
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return ordered
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}
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