expression/agg: add unit-test. (#6074)
This commit is contained in:
Yiding Cui
449
expression/aggregation/aggregation_test.go
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449
expression/aggregation/aggregation_test.go
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@ -0,0 +1,449 @@
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// Copyright 2018 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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// See the License for the specific language governing permissions and
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// limitations under the License.
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package aggregation
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import (
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"math"
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. "github.com/pingcap/check"
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"github.com/pingcap/tidb/ast"
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"github.com/pingcap/tidb/expression"
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"github.com/pingcap/tidb/mysql"
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"github.com/pingcap/tidb/sessionctx"
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"github.com/pingcap/tidb/types"
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"github.com/pingcap/tidb/util/mock"
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)
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var _ = Suite(&testAggFuncSuit{})
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type testAggFuncSuit struct {
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ctx sessionctx.Context
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rows []types.DatumRow
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nullRow types.DatumRow
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}
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func generateRowData() []types.DatumRow {
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rows := make([]types.DatumRow, 0, 5050)
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for i := 1; i <= 100; i++ {
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for j := 0; j < i; j++ {
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rows = append(rows, types.MakeDatums(i))
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}
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}
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return rows
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}
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func (s *testAggFuncSuit) SetUpSuite(c *C) {
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s.ctx = mock.NewContext()
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s.rows = generateRowData()
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s.nullRow = []types.Datum{{}}
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}
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func (s *testAggFuncSuit) TestAvg(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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avgFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := avgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := avgFunc.GetResult(evalCtx)
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c.Assert(result.IsNull(), IsTrue)
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for _, row := range s.rows {
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err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)
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c.Assert(err, IsNil)
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}
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result = avgFunc.GetResult(evalCtx)
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needed := types.NewDecFromStringForTest("67.000000000000000000000000000000")
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = avgFunc.GetResult(evalCtx)
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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distinctAvgFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{col}, true).GetAggFunc()
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evalCtx = distinctAvgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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for _, row := range s.rows {
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err := distinctAvgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)
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c.Assert(err, IsNil)
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}
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result = distinctAvgFunc.GetResult(evalCtx)
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needed = types.NewDecFromStringForTest("50.500000000000000000000000000000")
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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partialResult := distinctAvgFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetInt64(), Equals, int64(100))
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needed = types.NewDecFromStringForTest("5050")
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c.Assert(partialResult[1].GetMysqlDecimal().Compare(needed) == 0, IsTrue, Commentf("%v, %v ", result.GetMysqlDecimal(), needed))
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}
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func (s *testAggFuncSuit) TestAvgFinalMode(c *C) {
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rows := make([]types.DatumRow, 0, 100)
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for i := 1; i <= 100; i++ {
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rows = append(rows, types.MakeDatums(i, types.NewDecFromInt(int64(i*i))))
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}
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cntCol := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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sumCol := &expression.Column{
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Index: 1,
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RetType: types.NewFieldType(mysql.TypeDecimal),
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}
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aggFunc := NewAggFuncDesc(s.ctx, ast.AggFuncAvg, []expression.Expression{cntCol, sumCol}, false)
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aggFunc.Mode = FinalMode
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avgFunc := aggFunc.GetAggFunc()
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evalCtx := avgFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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for _, row := range rows {
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err := avgFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)
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c.Assert(err, IsNil)
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}
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result := avgFunc.GetResult(evalCtx)
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needed := types.NewDecFromStringForTest("67.000000000000000000000000000000")
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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}
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func (s *testAggFuncSuit) TestSum(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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sumFunc := NewAggFuncDesc(s.ctx, ast.AggFuncSum, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := sumFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := sumFunc.GetResult(evalCtx)
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c.Assert(result.IsNull(), IsTrue)
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for _, row := range s.rows {
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err := sumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)
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c.Assert(err, IsNil)
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}
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result = sumFunc.GetResult(evalCtx)
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needed := types.NewDecFromStringForTest("338350")
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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err := sumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = sumFunc.GetResult(evalCtx)
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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partialResult := sumFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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distinctSumFunc := NewAggFuncDesc(s.ctx, ast.AggFuncSum, []expression.Expression{col}, true).GetAggFunc()
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evalCtx = distinctSumFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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for _, row := range s.rows {
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err := distinctSumFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, row)
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c.Assert(err, IsNil)
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}
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result = distinctSumFunc.GetResult(evalCtx)
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needed = types.NewDecFromStringForTest("5050")
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c.Assert(result.GetMysqlDecimal().Compare(needed) == 0, IsTrue)
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}
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func (s *testAggFuncSuit) TestBitAnd(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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bitAndFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitAnd, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := bitAndFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(math.MaxUint64))
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row := types.MakeDatums(1)
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err := bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(1)
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err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(3)
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err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(2)
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err = bitAndFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitAndFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(0))
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partialResult := bitAndFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetUint64(), Equals, uint64(0))
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}
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func (s *testAggFuncSuit) TestBitOr(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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bitOrFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitOr, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := bitOrFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(0))
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row := types.MakeDatums(1)
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err := bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(1)
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err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(3)
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err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(3))
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row = types.MakeDatums(2)
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err = bitOrFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitOrFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(3))
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partialResult := bitOrFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetUint64(), Equals, uint64(3))
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}
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func (s *testAggFuncSuit) TestBitXor(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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bitXorFunc := NewAggFuncDesc(s.ctx, ast.AggFuncBitXor, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := bitXorFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(0))
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row := types.MakeDatums(1)
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err := bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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row = types.MakeDatums(1)
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err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(0))
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row = types.MakeDatums(3)
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err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(3))
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row = types.MakeDatums(2)
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err = bitXorFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = bitXorFunc.GetResult(evalCtx)
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c.Assert(result.GetUint64(), Equals, uint64(1))
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partialResult := bitXorFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetUint64(), Equals, uint64(1))
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}
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func (s *testAggFuncSuit) TestCount(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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countFunc := NewAggFuncDesc(s.ctx, ast.AggFuncCount, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := countFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := countFunc.GetResult(evalCtx)
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c.Assert(result.GetInt64(), Equals, int64(0))
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for _, row := range s.rows {
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err := countFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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}
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result = countFunc.GetResult(evalCtx)
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c.Assert(result.GetInt64(), Equals, int64(5050))
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err := countFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, s.nullRow)
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c.Assert(err, IsNil)
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result = countFunc.GetResult(evalCtx)
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c.Assert(result.GetInt64(), Equals, int64(5050))
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partialResult := countFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetInt64(), Equals, int64(5050))
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distinctCountFunc := NewAggFuncDesc(s.ctx, ast.AggFuncCount, []expression.Expression{col}, true).GetAggFunc()
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evalCtx = distinctCountFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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for _, row := range s.rows {
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err := distinctCountFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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}
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result = distinctCountFunc.GetResult(evalCtx)
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c.Assert(result.GetInt64(), Equals, int64(100))
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}
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func (s *testAggFuncSuit) TestConcat(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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sep := &expression.Column{
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Index: 1,
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RetType: types.NewFieldType(mysql.TypeVarchar),
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}
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concatFunc := NewAggFuncDesc(s.ctx, ast.AggFuncGroupConcat, []expression.Expression{col, sep}, false).GetAggFunc()
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evalCtx := concatFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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result := concatFunc.GetResult(evalCtx)
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c.Assert(result.IsNull(), IsTrue)
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row := types.MakeDatums(1, "x")
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err := concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = concatFunc.GetResult(evalCtx)
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c.Assert(result.GetString(), Equals, "1")
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row[0].SetInt64(2)
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err = concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = concatFunc.GetResult(evalCtx)
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c.Assert(result.GetString(), Equals, "1x2")
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row[0].SetNull()
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err = concatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = concatFunc.GetResult(evalCtx)
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c.Assert(result.GetString(), Equals, "1x2")
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partialResult := concatFunc.GetPartialResult(evalCtx)
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c.Assert(partialResult[0].GetString(), Equals, "1x2")
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distinctConcatFunc := NewAggFuncDesc(s.ctx, ast.AggFuncGroupConcat, []expression.Expression{col, sep}, true).GetAggFunc()
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evalCtx = distinctConcatFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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row[0].SetInt64(1)
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err = distinctConcatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = distinctConcatFunc.GetResult(evalCtx)
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c.Assert(result.GetString(), Equals, "1")
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row[0].SetInt64(1)
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err = distinctConcatFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result = distinctConcatFunc.GetResult(evalCtx)
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c.Assert(result.GetString(), Equals, "1")
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}
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func (s *testAggFuncSuit) TestFirstRow(c *C) {
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col := &expression.Column{
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Index: 0,
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RetType: types.NewFieldType(mysql.TypeLonglong),
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}
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firstRowFunc := NewAggFuncDesc(s.ctx, ast.AggFuncFirstRow, []expression.Expression{col}, false).GetAggFunc()
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evalCtx := firstRowFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
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row := types.MakeDatums(1)
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err := firstRowFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
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c.Assert(err, IsNil)
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result := firstRowFunc.GetResult(evalCtx)
|
||||
c.Assert(result.GetUint64(), Equals, uint64(1))
|
||||
|
||||
row = types.MakeDatums(2)
|
||||
err = firstRowFunc.Update(evalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = firstRowFunc.GetResult(evalCtx)
|
||||
c.Assert(result.GetUint64(), Equals, uint64(1))
|
||||
partialResult := firstRowFunc.GetPartialResult(evalCtx)
|
||||
c.Assert(partialResult[0].GetUint64(), Equals, uint64(1))
|
||||
}
|
||||
|
||||
func (s *testAggFuncSuit) TestMaxMin(c *C) {
|
||||
col := &expression.Column{
|
||||
Index: 0,
|
||||
RetType: types.NewFieldType(mysql.TypeLonglong),
|
||||
}
|
||||
|
||||
maxFunc := NewAggFuncDesc(s.ctx, ast.AggFuncMax, []expression.Expression{col}, false).GetAggFunc()
|
||||
minFunc := NewAggFuncDesc(s.ctx, ast.AggFuncMin, []expression.Expression{col}, false).GetAggFunc()
|
||||
maxEvalCtx := maxFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
|
||||
minEvalCtx := minFunc.CreateContext(s.ctx.GetSessionVars().StmtCtx)
|
||||
|
||||
result := maxFunc.GetResult(maxEvalCtx)
|
||||
c.Assert(result.IsNull(), IsTrue)
|
||||
result = minFunc.GetResult(minEvalCtx)
|
||||
c.Assert(result.IsNull(), IsTrue)
|
||||
|
||||
row := types.MakeDatums(2)
|
||||
err := maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = maxFunc.GetResult(maxEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(2))
|
||||
err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = minFunc.GetResult(minEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(2))
|
||||
|
||||
row[0].SetInt64(3)
|
||||
err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = maxFunc.GetResult(maxEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(3))
|
||||
err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = minFunc.GetResult(minEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(2))
|
||||
|
||||
row[0].SetInt64(1)
|
||||
err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = maxFunc.GetResult(maxEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(3))
|
||||
err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = minFunc.GetResult(minEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(1))
|
||||
|
||||
row[0].SetNull()
|
||||
err = maxFunc.Update(maxEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = maxFunc.GetResult(maxEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(3))
|
||||
err = minFunc.Update(minEvalCtx, s.ctx.GetSessionVars().StmtCtx, types.DatumRow(row))
|
||||
c.Assert(err, IsNil)
|
||||
result = minFunc.GetResult(minEvalCtx)
|
||||
c.Assert(result.GetInt64(), Equals, int64(1))
|
||||
partialResult := minFunc.GetPartialResult(minEvalCtx)
|
||||
c.Assert(partialResult[0].GetInt64(), Equals, int64(1))
|
||||
}
|
||||
Reference in New Issue
Block a user