// Copyright 2018 PingCAP, Inc. // // Licensed under the Apache License, Version 2.0 (the "License"); // you may not use this file except in compliance with the License. // You may obtain a copy of the License at // // http://www.apache.org/licenses/LICENSE-2.0 // // Unless required by applicable law or agreed to in writing, software // distributed under the License is distributed on an "AS IS" BASIS, // See the License for the specific language governing permissions and // limitations under the License. package memo import ( . "github.com/pingcap/check" plannercore "github.com/pingcap/tidb/planner/core" ) func (s *testMemoSuite) TestGetOperand(c *C) { c.Assert(GetOperand(&plannercore.LogicalJoin{}), Equals, OperandJoin) c.Assert(GetOperand(&plannercore.LogicalAggregation{}), Equals, OperandAggregation) c.Assert(GetOperand(&plannercore.LogicalProjection{}), Equals, OperandProjection) c.Assert(GetOperand(&plannercore.LogicalSelection{}), Equals, OperandSelection) c.Assert(GetOperand(&plannercore.LogicalApply{}), Equals, OperandApply) c.Assert(GetOperand(&plannercore.LogicalMaxOneRow{}), Equals, OperandMaxOneRow) c.Assert(GetOperand(&plannercore.LogicalTableDual{}), Equals, OperandTableDual) c.Assert(GetOperand(&plannercore.DataSource{}), Equals, OperandDataSource) c.Assert(GetOperand(&plannercore.LogicalUnionScan{}), Equals, OperandUnionScan) c.Assert(GetOperand(&plannercore.LogicalUnionAll{}), Equals, OperandUnionAll) c.Assert(GetOperand(&plannercore.LogicalSort{}), Equals, OperandSort) c.Assert(GetOperand(&plannercore.LogicalTopN{}), Equals, OperandTopN) c.Assert(GetOperand(&plannercore.LogicalLock{}), Equals, OperandLock) c.Assert(GetOperand(&plannercore.LogicalLimit{}), Equals, OperandLimit) } func (s *testMemoSuite) TestOperandMatch(c *C) { c.Assert(OperandAny.Match(OperandLimit), IsTrue) c.Assert(OperandAny.Match(OperandSelection), IsTrue) c.Assert(OperandAny.Match(OperandJoin), IsTrue) c.Assert(OperandAny.Match(OperandMaxOneRow), IsTrue) c.Assert(OperandAny.Match(OperandAny), IsTrue) c.Assert(OperandLimit.Match(OperandAny), IsTrue) c.Assert(OperandSelection.Match(OperandAny), IsTrue) c.Assert(OperandJoin.Match(OperandAny), IsTrue) c.Assert(OperandMaxOneRow.Match(OperandAny), IsTrue) c.Assert(OperandAny.Match(OperandAny), IsTrue) c.Assert(OperandLimit.Match(OperandLimit), IsTrue) c.Assert(OperandSelection.Match(OperandSelection), IsTrue) c.Assert(OperandJoin.Match(OperandJoin), IsTrue) c.Assert(OperandMaxOneRow.Match(OperandMaxOneRow), IsTrue) c.Assert(OperandAny.Match(OperandAny), IsTrue) c.Assert(OperandLimit.Match(OperandSelection), IsFalse) c.Assert(OperandLimit.Match(OperandJoin), IsFalse) c.Assert(OperandLimit.Match(OperandMaxOneRow), IsFalse) } func (s *testMemoSuite) TestNewPattern(c *C) { p := NewPattern(OperandAny, EngineAll) c.Assert(p.Operand, Equals, OperandAny) c.Assert(p.Children, IsNil) p = NewPattern(OperandJoin, EngineAll) c.Assert(p.Operand, Equals, OperandJoin) c.Assert(p.Children, IsNil) } func (s *testMemoSuite) TestPatternSetChildren(c *C) { p := NewPattern(OperandAny, EngineAll) p.SetChildren(NewPattern(OperandLimit, EngineAll)) c.Assert(len(p.Children), Equals, 1) c.Assert(p.Children[0].Operand, Equals, OperandLimit) c.Assert(p.Children[0].Children, IsNil) p = NewPattern(OperandJoin, EngineAll) p.SetChildren(NewPattern(OperandProjection, EngineAll), NewPattern(OperandSelection, EngineAll)) c.Assert(len(p.Children), Equals, 2) c.Assert(p.Children[0].Operand, Equals, OperandProjection) c.Assert(p.Children[0].Children, IsNil) c.Assert(p.Children[1].Operand, Equals, OperandSelection) c.Assert(p.Children[1].Children, IsNil) }