80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
// Copyright 2020 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 executor
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import (
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"strconv"
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"strings"
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"testing"
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"github.com/pingcap/tidb/parser/mysql"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/chunk"
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"github.com/pingcap/tidb/util/mock"
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"github.com/stretchr/testify/require"
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)
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func TestApplyCache(t *testing.T) {
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ctx := mock.NewContext()
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ctx.GetSessionVars().MemQuotaApplyCache = 100
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applyCache, err := newApplyCache(ctx)
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require.NoError(t, err)
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fields := []*types.FieldType{types.NewFieldType(mysql.TypeLonglong)}
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value := make([]*chunk.List, 3)
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key := make([][]byte, 3)
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for i := 0; i < 3; i++ {
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value[i] = chunk.NewList(fields, 1, 1)
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srcChunk := chunk.NewChunkWithCapacity(fields, 1)
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srcChunk.AppendInt64(0, int64(i))
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srcRow := srcChunk.GetRow(0)
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value[i].AppendRow(srcRow)
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key[i] = []byte(strings.Repeat(strconv.Itoa(i), 100))
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// TODO: *chunk.List.GetMemTracker().BytesConsumed() is not accurate, fix it later.
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require.Equal(t, int64(100), applyCacheKVMem(key[i], value[i]))
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}
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ok, err := applyCache.Set(key[0], value[0])
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require.NoError(t, err)
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require.True(t, ok)
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result, err := applyCache.Get(key[0])
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require.NoError(t, err)
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require.NotNil(t, result)
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ok, err = applyCache.Set(key[1], value[1])
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require.NoError(t, err)
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require.True(t, ok)
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result, err = applyCache.Get(key[1])
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require.NoError(t, err)
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require.NotNil(t, result)
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ok, err = applyCache.Set(key[2], value[2])
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require.NoError(t, err)
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require.True(t, ok)
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result, err = applyCache.Get(key[2])
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require.NoError(t, err)
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require.NotNil(t, result)
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// Both key[0] and key[1] are not in the cache
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result, err = applyCache.Get(key[0])
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require.NoError(t, err)
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require.Nil(t, result)
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result, err = applyCache.Get(key[1])
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require.NoError(t, err)
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require.Nil(t, result)
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}
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