88 lines
2.8 KiB
Go
88 lines
2.8 KiB
Go
// Copyright 2023 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 internal
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import (
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"testing"
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"github.com/pingcap/tidb/pkg/statistics"
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"github.com/stretchr/testify/require"
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)
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// AssertTableEqual is to assert whether two table is equal
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func AssertTableEqual(t *testing.T, a *statistics.Table, b *statistics.Table) {
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require.Equal(t, b.RealtimeCount, a.RealtimeCount)
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require.Equal(t, b.ModifyCount, a.ModifyCount)
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require.Equal(t, a.ColNum(), b.ColNum())
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a.ForEachColumnImmutable(func(id int64, col *statistics.Column) bool {
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bCol := b.GetCol(id)
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require.NotNil(t, bCol)
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require.True(t, statistics.HistogramEqual(&col.Histogram, &bCol.Histogram, false))
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if col.CMSketch == nil {
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require.Nil(t, bCol.CMSketch)
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} else {
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require.True(t, col.CMSketch.Equal(bCol.CMSketch))
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}
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// The nil case has been considered in (*TopN).Equal() so we don't need to consider it here.
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require.Truef(t, col.TopN.Equal(bCol.TopN), "%v, %v", col.TopN, bCol.TopN)
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return false
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})
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require.Equal(t, a.IdxNum(), b.IdxNum())
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a.ForEachIndexImmutable(func(id int64, idx *statistics.Index) bool {
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bIdx := b.GetIdx(id)
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require.NotNil(t, bIdx)
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require.True(t, statistics.HistogramEqual(&idx.Histogram, &bIdx.Histogram, false))
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if idx.CMSketch == nil {
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require.Nil(t, bIdx.CMSketch)
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} else {
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require.True(t, idx.CMSketch.Equal(bIdx.CMSketch))
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}
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require.True(t, idx.TopN.Equal(bIdx.TopN))
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return false
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})
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require.True(t, IsSameExtendedStats(a.ExtendedStats, b.ExtendedStats))
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require.True(t, statistics.ColAndIdxExistenceMapIsEqual(a.ColAndIdxExistenceMap, b.ColAndIdxExistenceMap))
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}
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// IsSameExtendedStats is to judge whether the extended states is the same.
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func IsSameExtendedStats(a, b *statistics.ExtendedStatsColl) bool {
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aEmpty := (a == nil) || len(a.Stats) == 0
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bEmpty := (b == nil) || len(b.Stats) == 0
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if (aEmpty && !bEmpty) || (!aEmpty && bEmpty) {
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return false
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}
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if aEmpty && bEmpty {
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return true
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}
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if len(a.Stats) != len(b.Stats) {
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return false
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}
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for aKey, aItem := range a.Stats {
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bItem, ok := b.Stats[aKey]
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if !ok {
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return false
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}
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for i, id := range aItem.ColIDs {
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if id != bItem.ColIDs[i] {
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return false
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}
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}
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if (aItem.Tp != bItem.Tp) || (aItem.ScalarVals != bItem.ScalarVals) || (aItem.StringVals != bItem.StringVals) {
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return false
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}
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}
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return true
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}
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