90 lines
3.6 KiB
Go
90 lines
3.6 KiB
Go
// 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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// 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 pattern
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import (
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"testing"
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plannercore "github.com/pingcap/tidb/pkg/planner/core"
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"github.com/stretchr/testify/require"
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)
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func TestGetOperand(t *testing.T) {
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require.Equal(t, OperandJoin, GetOperand(&plannercore.LogicalJoin{}))
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require.Equal(t, OperandAggregation, GetOperand(&plannercore.LogicalAggregation{}))
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require.Equal(t, OperandProjection, GetOperand(&plannercore.LogicalProjection{}))
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require.Equal(t, OperandSelection, GetOperand(&plannercore.LogicalSelection{}))
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require.Equal(t, OperandApply, GetOperand(&plannercore.LogicalApply{}))
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require.Equal(t, OperandMaxOneRow, GetOperand(&plannercore.LogicalMaxOneRow{}))
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require.Equal(t, OperandTableDual, GetOperand(&plannercore.LogicalTableDual{}))
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require.Equal(t, OperandDataSource, GetOperand(&plannercore.DataSource{}))
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require.Equal(t, OperandUnionScan, GetOperand(&plannercore.LogicalUnionScan{}))
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require.Equal(t, OperandUnionAll, GetOperand(&plannercore.LogicalUnionAll{}))
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require.Equal(t, OperandSort, GetOperand(&plannercore.LogicalSort{}))
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require.Equal(t, OperandTopN, GetOperand(&plannercore.LogicalTopN{}))
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require.Equal(t, OperandLock, GetOperand(&plannercore.LogicalLock{}))
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require.Equal(t, OperandLimit, GetOperand(&plannercore.LogicalLimit{}))
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}
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func TestOperandMatch(t *testing.T) {
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require.True(t, OperandAny.Match(OperandLimit))
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require.True(t, OperandAny.Match(OperandSelection))
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require.True(t, OperandAny.Match(OperandJoin))
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require.True(t, OperandAny.Match(OperandMaxOneRow))
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require.True(t, OperandAny.Match(OperandAny))
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require.True(t, OperandLimit.Match(OperandAny))
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require.True(t, OperandSelection.Match(OperandAny))
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require.True(t, OperandJoin.Match(OperandAny))
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require.True(t, OperandMaxOneRow.Match(OperandAny))
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require.True(t, OperandAny.Match(OperandAny))
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require.True(t, OperandLimit.Match(OperandLimit))
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require.True(t, OperandSelection.Match(OperandSelection))
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require.True(t, OperandJoin.Match(OperandJoin))
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require.True(t, OperandMaxOneRow.Match(OperandMaxOneRow))
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require.True(t, OperandAny.Match(OperandAny))
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require.False(t, OperandLimit.Match(OperandSelection))
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require.False(t, OperandLimit.Match(OperandJoin))
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require.False(t, OperandLimit.Match(OperandMaxOneRow))
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}
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func TestNewPattern(t *testing.T) {
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p := NewPattern(OperandAny, EngineAll)
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require.Equal(t, OperandAny, p.Operand)
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require.Nil(t, p.Children)
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p = NewPattern(OperandJoin, EngineAll)
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require.Equal(t, OperandJoin, p.Operand)
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require.Nil(t, p.Children)
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}
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func TestPatternSetChildren(t *testing.T) {
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p := NewPattern(OperandAny, EngineAll)
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p.SetChildren(NewPattern(OperandLimit, EngineAll))
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require.Len(t, p.Children, 1)
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require.Equal(t, OperandLimit, p.Children[0].Operand)
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require.Nil(t, p.Children[0].Children)
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p = NewPattern(OperandJoin, EngineAll)
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p.SetChildren(NewPattern(OperandProjection, EngineAll), NewPattern(OperandSelection, EngineAll))
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require.Len(t, p.Children, 2)
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require.Equal(t, OperandProjection, p.Children[0].Operand)
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require.Nil(t, p.Children[0].Children)
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require.Equal(t, OperandSelection, p.Children[1].Operand)
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require.Nil(t, p.Children[1].Children)
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}
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